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How to Determine Your Kitchen’s Cleaning Frequency

One of the most common questions restaurant owners ask is “how often do I really need to get my hood cleaned?” The answer isn’t the same for every kitchen — it depends on what you cook, how much you cook, and how many hours a day your exhaust system runs. Get it wrong in either direction and you’re either wasting money on unnecessary cleanings or risking a fire and a failed inspection.

NFPA 96 provides the baseline cleaning schedule, but real-world conditions often require adjustment. After years working with CaptiveAire, Accurex, and Gaylord systems, I’ve developed a practical approach to determining the right cleaning frequency for any commercial kitchen.

The Decision Tree: Find Your Cleaning Frequency

Start with your primary cooking equipment and work through the logic below. Your frequency is determined by your highest-grease-producing equipment, not an average across all equipment.

Monthly Cleaning

You need monthly cleaning if ANY of the following are true:

• You operate a charbroiler (gas or charcoal)
• You have high-volume wok cooking
• You use solid fuel cooking (wood-fired oven, wood/charcoal grill, smoker under a hood)
• You operate 18+ hours per day with heavy grease-producing equipment
• You’re a 24-hour restaurant with continuous cooking

Quarterly Cleaning

You need quarterly cleaning if you don’t meet the monthly criteria above but ANY of the following are true:

• You operate deep fryers as a primary cooking method
• You have a flat-top grill running 8+ hours daily
• You operate tilting skillets or braising pans regularly
• You’re a full-service restaurant with moderate grease production
• You’re a fast food or QSR operation with fryers and grills
• You’re a hotel, casino, or institutional kitchen with moderate volume

Semi-Annual Cleaning

You qualify for semi-annual cleaning if you don’t meet any monthly or quarterly criteria and:

• Your primary cooking involves ovens, ranges, and steamers (not charbroilers or heavy fryer use)
• You operate limited hours (under 8 hours daily)
• You’re a church kitchen, day camp, seasonal operation, or low-volume cafeteria
• You produce moderate grease but at low volume

Annual Cleaning

Annual cleaning is only appropriate if:

• Your cooking produces minimal grease (pizza ovens without fryers, steam tables, warming ovens)
• You don’t operate charbroilers, deep fryers, or woks
• You’re a low-volume snack bar, beverage-focused cafe, or reheat-only operation

Quick Reference: Equipment to Frequency

Primary Cooking Equipment	Grease Output Level	Recommended Frequency
Charbroiler (gas or charcoal)	Extreme	Monthly
Wok range (high-volume Chinese/Asian cooking)	Extreme	Monthly
Wood-fired oven / smoker (under hood)	Very High	Monthly
Deep fryers (primary cooking method)	High	Quarterly
Flat-top griddle (heavy use)	High	Quarterly
Tilting skillet / braising pan	Moderate-High	Quarterly
Convection oven	Moderate	Semi-Annual
Range / burners (saute, boiling)	Low-Moderate	Semi-Annual
Combi oven / steamer	Low	Semi-Annual to Annual
Pizza deck oven (no fryers)	Low	Annual
Steam table / warming equipment	Minimal	Annual

Remember: if you have a charbroiler AND a fryer under the same hood, the charbroiler dictates the frequency. You clean based on your worst-case equipment, not your cleanest.

Factors That May Increase Your Frequency

Even if the table above puts you at quarterly, certain conditions may push you to more frequent cleaning:

Operating Hours

The NFPA 96 schedule assumes typical operating hours. If you run significantly longer hours — a restaurant open 16 hours a day versus a typical 10-12 — your system accumulates grease faster. Consider bumping up one frequency level (quarterly to every 2 months, semi-annual to quarterly).

Inadequate Makeup Air

If your kitchen has insufficient makeup air, your exhaust system may not capture grease-laden vapor as effectively, leading to more grease reaching the ductwork. Signs include negative pressure (doors hard to open), smoke spillage from the hood, and grease deposits on kitchen walls and ceilings. Fix the makeup air problem, but also consider increased cleaning frequency until it’s resolved.

Aging or Non-Standard Ductwork

Older ductwork with rough interior surfaces, excessive horizontal runs, or poor seam construction accumulates grease faster than smooth, well-constructed systems. If your ductwork has issues, increased frequency compensates until you can address the underlying problems.

Menu Changes

If you add a charbroiler to a kitchen that previously only had ovens and fryers, your cleaning frequency must change immediately. Don’t wait for the next scheduled cleaning — reassess your frequency every time your cooking equipment or menu significantly changes.

Consequences of Stretching Cleaning Intervals

Some restaurant owners try to save money by extending the time between cleanings. Here’s what actually happens:

• Heavier buildup costs more to clean. A quarterly cleaning on schedule costs $350-$600. That same system with 6 months of buildup may cost $500-$800 due to the extra labor. You don’t save money — you just defer and inflate the cost.
• Failed inspections. Fire marshals can see (and smell) overdue systems. A failed hood inspection means fines, re-inspection fees, and potential closure.
• Insurance risk. If a fire occurs and your cleaning records show extended intervals, your insurance company has grounds to reduce or deny your claim.
• Actual fire risk. Grease buildup is the leading cause of restaurant fires. Every week past your due date increases the fuel load in your exhaust system.
• Reduced airflow. Grease restricts airflow, making your kitchen hotter and smokier. Your exhaust fan works harder, uses more energy, and wears out faster.

When to Increase Frequency Mid-Cycle

Don’t wait for your next scheduled cleaning if you notice:

• Visible grease dripping from the hood or ductwork
• Grease cups filling much faster than usual
• Kitchen noticeably smokier during cooking
• Grease smell in areas outside the kitchen
• Your cleaning company’s last report noted “heavy buildup” at the time of cleaning

Any of these signs mean your current frequency isn’t sufficient. Contact your cleaning company and adjust your schedule.

Sample Cleaning Schedules by Restaurant Type

Restaurant Type	Typical Equipment	Recommended Schedule	Estimated Annual Cost
Burger restaurant with charbroiler	Charbroiler, fryer, flat-top	Monthly (12x/year)	$3,600 – $6,000
Chinese/Asian restaurant	Wok ranges, fryers	Monthly (12x/year)	$3,600 – $6,000
Full-service casual dining	Fryers, grill, oven, saute	Quarterly (4x/year)	$1,400 – $2,400
Fast food / QSR	Fryers, flat-top griddle	Quarterly (4x/year)	$1,400 – $2,400
Pizza restaurant (no fryers)	Pizza ovens, warming	Annual (1x/year)	$300 – $500
Church / community kitchen	Oven, range, steamer	Semi-Annual (2x/year)	$500 – $900
Hospital / university cafeteria	Mixed — fryers, ovens, steamers, grills	Quarterly (4x/year)	$2,400 – $6,000

Frequently Asked Questions

Can I clean less often if I maintain my filters really well?

No. Excellent filter maintenance reduces the rate of grease accumulation in the ductwork, but it doesn’t eliminate it. Even perfectly maintained baffle filters allow microscopic grease particles into the duct system. Filter maintenance is important — it’s part of your daily responsibility — but it doesn’t replace or extend professional cleaning intervals.

My cleaning company says I need monthly, but NFPA 96 says quarterly for my equipment. Who’s right?

Evaluate the recommendation honestly. If your cleaning company consistently finds heavy buildup at your quarterly cleanings, they may be right that your specific operation produces more grease than the standard table assumes. On the other hand, some companies push for monthly cleaning to increase revenue. Ask to see the before/after photos from your last few cleanings — if the “before” photos show significant buildup, more frequent cleaning is warranted. If the system looks relatively clean at each quarterly visit, stay on the quarterly schedule.

I just took over a restaurant and don’t know when it was last cleaned. What do I do?

Schedule an immediate cleaning. Don’t assume the previous owner was compliant — many restaurants change hands with overdue exhaust systems. After the initial cleaning, establish your schedule based on your cooking equipment and volume using the guide above. Keep your own records going forward.

Does the type of cooking oil affect cleaning frequency?

Not significantly. Animal fats (lard, tallow, butter) produce slightly stickier deposits than vegetable oils, but the difference isn’t enough to change your cleaning frequency. Cooking method (charbroiling vs. frying vs. baking) and volume are far more significant factors than oil type.

What Is IKECA?

IKECA stands for the International Kitchen Exhaust Cleaning Association. Founded in 1989, it’s the only trade association dedicated exclusively to kitchen exhaust cleaning. IKECA sets cleaning standards, provides training and certification, and serves as the industry’s benchmark for professionalism and competence.

When NFPA 96 references “qualified persons” for exhaust system cleaning, IKECA certification is the standard it points to. Fire marshals, insurance companies, and property managers recognize IKECA certification as proof that a cleaning company knows what they’re doing.

Whether you’re a restaurant owner choosing a cleaning company or someone starting a hood cleaning business, understanding what IKECA certification means — and doesn’t mean — will help you make better decisions.

IKECA Certification Levels

IKECA offers two primary certification programs:

Certification	Who It’s For	Requirements	Cost
IKECA Certified Exhaust Cleaning Technician	Individual technicians performing the cleaning work	Pass written exam covering NFPA 96, cleaning procedures, fire safety, equipment operation	$200 – $400 (exam + materials)
IKECA Certified Company	Hood cleaning businesses	At least one certified technician on staff, proof of insurance, adherence to IKECA standards, annual renewal	$500 – $1,000/year (membership + certification)

The technician certification tests knowledge of NFPA 96 requirements, proper cleaning techniques, fire suppression awareness, documentation standards, and safety procedures. It’s not a rubber-stamp certification — the exam requires genuine understanding of exhaust system design and maintenance.

Why IKECA Certification Matters for Restaurant Owners

Insurance Protection

If your kitchen exhaust system causes a fire, your insurance company will investigate. One of the first things they’ll look at is who cleaned your system and whether they were qualified. Using an IKECA-certified company provides documented proof that you hired a qualified professional — strengthening your position if a claim is ever filed.

Fire Marshal Confidence

Fire marshals know the IKECA name. When they see an IKECA certification sticker on your hood, it carries weight. It doesn’t make you immune to violations, but it signals that you’re taking maintenance seriously and working with a company that meets industry standards.

Actual Cleaning Quality

IKECA-certified companies clean to a documented standard — bare metal, full system (hood to fan), proper documentation with before/after photos, and written reports. This is what you should be getting from any cleaning company, but IKECA certification means they’ve committed to it formally.

Accountability

IKECA membership comes with accountability. Certified companies can lose their certification for substandard work, and IKECA investigates complaints. This gives you recourse if a company doesn’t deliver what they promised.

Certified vs. Non-Certified Companies: What’s the Difference?

Factor	IKECA Certified	Non-Certified
NFPA 96 knowledge	Verified by exam	Unknown — may or may not know the standard
Cleaning standard	Bare metal, full system, documented	Varies widely — some are excellent, many cut corners
Insurance acceptance	Widely recognized as qualified	May face pushback from adjusters
Documentation	Before/after photos, written reports, certification stickers standard	Varies — some provide nothing
Pricing	Generally market rate or slightly above	Wide range — some very cheap (often reflects quality)
Accountability	Subject to IKECA complaint process	No industry oversight beyond legal action

Important caveat: not every non-certified company is bad, and certification alone doesn’t guarantee perfection. There are excellent operators who haven’t pursued IKECA certification, and there are certified companies that have off days. But certification provides a baseline assurance of competence and professionalism that helps you make a more informed hiring decision.

How to Verify IKECA Certification

Verifying a company’s IKECA certification is straightforward:

1. Ask the company directly. Request their IKECA certification number and expiration date. Legitimate companies will provide this without hesitation.
2. Check the IKECA directory. Visit ikeca.org and use their online member directory to search for certified companies by location. If the company claims certification but doesn’t appear in the directory, their certification may have lapsed.
3. Look for the sticker. IKECA-certified companies typically apply an IKECA-branded certification sticker to the hood after cleaning, in addition to their company sticker.
4. Verify insurance. While you’re confirming certification, also request a current certificate of insurance. IKECA requires adequate insurance for certified companies, so this should be readily available.

Other Relevant Certifications and Requirements

IKECA is the primary certification for kitchen exhaust cleaning, but there are other credentials and requirements to be aware of:

State and Local Licensing

Some states and municipalities require specific licensing for hood cleaning companies. This varies widely by jurisdiction. Examples include fire protection contractor licenses, general contractor licenses, or specific hood cleaning permits. Always verify that your cleaning company holds any required local licenses in addition to IKECA certification.

NFPA Certifications

While NFPA doesn’t directly certify hood cleaning companies, familiarity with NFPA standards — particularly NFPA 96 (ventilation control), NFPA 17A (wet chemical systems), and NFPA 1 (fire code) — is essential knowledge for any qualified cleaner. IKECA’s exam covers relevant NFPA content.

Fire Suppression Certifications

If your hood cleaning company also services fire suppression systems, they need separate certification from the suppression system manufacturer (Ansul, Kidde, Amerex) and typically a state fire protection contractor license. Hood cleaning certification alone does not qualify a company to service fire suppression systems.

OSHA and Safety Training

Reputable companies ensure their technicians have OSHA safety training covering working at heights (rooftop fan access), chemical handling, confined spaces (ductwork), and hot water/pressure washer safety. This isn’t a formal certification restaurants need to verify, but it reflects the company’s professionalism.

What IKECA Certification Costs (For Hood Cleaning Business Owners)

If you’re starting a hood cleaning business, here’s what IKECA certification involves:

• IKECA membership: $300-$600/year depending on company size
• Technician exam preparation: IKECA offers study materials and practice exams ($100-$200)
• Technician exam fee: $150-$250
• Company certification application: Included with membership or small additional fee
• Continuing education: Required for renewal — attend IKECA workshops, webinars, or annual conference

Total first-year cost is roughly $500-$1,000. It’s a worthwhile investment that pays for itself quickly through increased customer confidence and access to accounts that require IKECA-certified vendors (hospitals, universities, large property management companies).

Frequently Asked Questions

Is IKECA certification required by law?

Not directly. No state mandates IKECA certification for hood cleaning. However, NFPA 96 requires cleaning by “qualified” persons and references IKECA standards. Some jurisdictions and many insurance companies interpret this to mean IKECA-certified or equivalently qualified. In practice, IKECA certification is the clearest way to demonstrate qualification.

Should I only hire IKECA-certified companies?

It’s a strong preference, not an absolute rule. If you’re in a major metro area with multiple IKECA-certified options, there’s no reason to choose a non-certified company. In smaller markets with limited options, a non-certified company with strong references, proper insurance, and demonstrated knowledge of NFPA 96 can be perfectly acceptable. Always check references and verify insurance regardless of certification status.

How often do technicians need to recertify?

IKECA technician certification must be renewed periodically (typically every 3 years) through continuing education credits. This ensures certified technicians stay current with code changes, new equipment, and evolving best practices.

Does IKECA certification guarantee a good cleaning?

It guarantees a baseline of knowledge and commitment to standards. It doesn’t guarantee that every cleaning will be perfect — human factors and individual job conditions always play a role. But it significantly reduces the risk of hiring a company that doesn’t know what they’re doing. Combine certification verification with reference checks and before/after photo requirements for the best results.

What Is a Commercial Kitchen Fire Suppression System?

A fire suppression system is the last line of defense between a cooking flare-up and a catastrophic kitchen fire. These systems are installed inside the exhaust hood, connected to nozzles aimed at cooking surfaces and the hood plenum. When a fire reaches a certain temperature, the system activates automatically — releasing a wet chemical agent that smothers the flames, cuts off oxygen, and cools the cooking surfaces to prevent re-ignition.

If your kitchen has a commercial exhaust hood, you are required to have a fire suppression system. Period. It’s mandated by NFPA 96, enforced by your fire marshal, and required by your insurance policy. Here’s everything you need to know about costs, maintenance, and how fire suppression connects to your hood cleaning schedule.

Major Fire Suppression System Brands

Three manufacturers dominate the commercial kitchen fire suppression market. All produce UL 300-listed systems that meet NFPA 96 and NFPA 17A requirements.

Brand	System Names	Market Position	Key Features
Ansul (Johnson Controls)	R-102, Piranha	Market leader — most widely installed	Extensive dealer network, most fire marshals know the brand, parts widely available
Kidde (Carrier)	Whdr, Sapphire	Strong second — common in chain restaurants	Competitive pricing, good coverage patterns, established service network
Amerex	KP Restaurant System	Growing share — value-focused	Lower cost point, reliable performance, gaining market share with independent restaurants

All three brands are excellent. In practice, most restaurants end up with whatever system their fire protection contractor installs or whatever the previous tenant left behind. The brand matters less than proper installation, regular inspection, and correct nozzle placement for your specific cooking equipment layout.

New Fire Suppression System Cost

Installing a new fire suppression system typically costs $3,000 to $8,000 depending on the size of the hood, number of nozzles required, and complexity of the cooking line.

System Size	Typical Application	Cost Range (Installed)
Small (4-6 nozzles)	Single hood, simple cooking line (cafe, pizza shop)	$3,000 – $4,500
Medium (6-10 nozzles)	Standard restaurant, fryer + grill + oven setup	$4,500 – $6,500
Large (10-16 nozzles)	High-volume kitchen, multiple cooking stations	$6,500 – $8,000
Multi-hood / institutional	Hotels, hospitals, university dining halls	$8,000 – $15,000+

These costs include the tank, piping, nozzles, fusible links, manual pull station, gas shutoff connection, and labor. If your kitchen is being built from scratch, the fire suppression system is typically installed by the hood manufacturer’s dealer or a licensed fire protection contractor during the ventilation install.

Inspection and Maintenance Requirements

Fire suppression systems require semi-annual inspection by a licensed fire protection technician. This is required by NFPA 96, NFPA 17A, and virtually every local fire code.

What a Semi-Annual Inspection Includes

• Visual inspection of all nozzles — correct aim, no obstruction, no grease coating
• Fusible link inspection — links must be clean, undamaged, and properly positioned (replaced if grease-coated or corroded)
• Manual pull station — tested for proper operation
• Gas shutoff valve — tested for proper activation when system triggers
• Electrical shutoff — if equipped, verified to cut power to cooking equipment on activation
• Agent tank — checked for proper charge and pressure
• Piping — inspected for damage, grease contamination, or loose connections
• Detection line — checked for proper tension and routing
• System reset — after testing, system is reset to armed status

Inspection Cost

Service	Cost Range	Frequency
Semi-annual inspection	$200 – $400	Every 6 months (required)
Fusible link replacement	$5 – $15 per link (+ labor)	As needed during inspection — typically annually
Nozzle replacement	$20 – $50 per nozzle (+ labor)	As needed — if damaged or improperly aimed
Full system recharge (after activation)	$500 – $1,500	After any system discharge
System reconfiguration (cooking line changes)	$500 – $2,000	Whenever you change cooking equipment layout

Many hood cleaning companies also hold fire protection licenses and can perform both services on the same visit. Bundling hood cleaning and fire suppression inspection typically saves 10-15% versus booking separately.

The Connection Between Hood Cleaning and Fire Suppression

Your hood cleaning and fire suppression system work together as complementary fire prevention measures. Here’s how they interact:

• Grease on fusible links. Fusible links are designed to melt at a specific temperature, triggering the suppression system. If they’re coated in grease, they may not respond at the correct temperature — potentially delaying activation during a fire. Your hood cleaning company should check and clean fusible links at every visit.
• Grease on nozzles. Clogged or grease-coated nozzles can’t distribute the wet chemical agent properly, reducing the system’s effectiveness. Nozzles should be checked during both hood cleaning and fire suppression inspections.
• Clean system = effective suppression. A grease-laden exhaust system gives fire more fuel to burn. Even if the suppression system activates perfectly, it may not be able to suppress a fire that has spread to heavy grease deposits in the ductwork. Regular hood cleaning reduces the fuel load, giving the suppression system the best chance of controlling a fire at the cooking surface before it spreads.

When You Need System Reconfiguration

Any time you change your cooking equipment layout, your fire suppression system must be reconfigured. This includes:

• Adding or removing cooking equipment under the hood
• Changing equipment positions (moving the fryer, adding a charbroiler)
• Replacing equipment with a different size or type
• Modifying the hood canopy

Nozzles must be aimed at specific cooking surfaces and the hood plenum. If you move a fryer and the nozzle is now aimed at empty counter space, the system won’t protect that fryer in a fire. Reconfiguration by a licensed technician typically runs $500-$2,000 depending on the extent of changes.

Common Fire Suppression Compliance Issues

• Expired inspection tags. The most common violation fire marshals find. Set a calendar reminder for 5.5 months after each inspection.
• Manual pull station blocked. The pull station must be accessible and visible. Don’t stack boxes or park equipment in front of it.
• Nozzle caps missing. Some nozzles have protective caps that blow off during activation. If caps are missing during inspection, it means nozzles may have been exposed to grease contamination.
• Cooking line changes without reconfiguration. Moving equipment without updating nozzle placement is a code violation and a genuine safety risk.

Frequently Asked Questions

What happens when the fire suppression system goes off?

The system releases a wet chemical agent from the nozzles, coating cooking surfaces and the hood interior. Simultaneously, the gas supply to cooking equipment is shut off via an automatic gas valve. The kitchen will be coated in a white, soapy residue. After the fire is confirmed extinguished and the fire department clears the scene, the system needs professional recharging ($500-$1,500) and the kitchen needs thorough cleaning before reopening.

Can I recharge the system myself?

No. Fire suppression system recharging must be performed by a licensed fire protection technician using the manufacturer’s approved agent and procedures. DIY recharging is a code violation and won’t be accepted by your fire marshal or insurance company.

Do I need fire suppression if I only have an oven and no open-flame equipment?

If you have a commercial exhaust hood, you need a fire suppression system — regardless of what cooking equipment is underneath it. Some jurisdictions may allow exceptions for Type II hoods (heat and steam only, no grease), but check with your local fire marshal. It’s cheaper to install the system than to argue the exception.

How long does a fire suppression system last?

With proper maintenance, a fire suppression system can last 15-25 years. The tank, piping, and nozzles are durable. Fusible links and seals are the wear items replaced during regular inspections. Eventually, the manufacturer may discontinue parts for older systems, at which point replacement becomes necessary.

The Essential Hood Cleaning Equipment List

Whether you’re starting a hood cleaning business or evaluating whether your current cleaning company is properly equipped, knowing what equipment is required for a professional hood cleaning matters. The right tools are the difference between a thorough NFPA 96-compliant cleaning and a superficial wipe-down that leaves grease in the ducts.

After years working with CaptiveAire, Accurex, and Gaylord ventilation systems, I’ve seen every setup from professional-grade rigs to guys showing up with a garden hose. Here’s what a properly equipped operation actually looks like.

Complete Equipment List with Costs

Equipment	Purpose	Cost Range	Priority
Hot water pressure washer (3,000-4,000 PSI, 4+ GPM)	Primary cleaning tool — blasts grease off metal surfaces	$2,500 – $6,000	Essential
Chemical spray pump (12V)	Applies degreaser to duct interiors and hard-to-reach areas	$300 – $800	Essential
Industrial degreaser (5-gallon concentrate)	Breaks down baked-on grease before pressure washing	$40 – $80 per 5 gal	Essential
Scrapers (various sizes: 2″, 4″, 6″)	Remove heavy grease deposits before chemical/water application	$30 – $75 (set)	Essential
Putty knives and detail tools	Clean corners, seams, and tight areas inside hoods and ducts	$20 – $50	Essential
Plastic sheeting and tarps	Contain water and chemical runoff; protect kitchen equipment	$50 – $150	Essential
Duct tape / containment tape	Secure plastic sheeting, seal access panels during cleaning	$15 – $30	Essential
LED work lights (battery-powered)	Illuminate hood interiors, ductwork, and fan housing	$40 – $120	Essential
Extension ladder (24-32 ft)	Roof access for exhaust fan cleaning	$200 – $500	Essential
Step ladder (6-8 ft)	Hood access inside the kitchen	$60 – $150	Essential
Garden hose and fittings	Water supply connection; rinsing	$30 – $60	Essential
Wet/dry shop vacuum	Clean up excess water and debris from kitchen floor	$80 – $200	Essential
PPE: chemical-resistant gloves, safety glasses, boots	Personal protection from chemicals and hot water	$50 – $100	Essential
Before/after camera (or phone)	Document work for customer records and compliance	$0 (use phone)	Essential
Certification stickers	Applied to hood after cleaning with date and next-due info	$20 – $50 (roll)	Essential
Wire brushes (various)	Scrub stubborn deposits in duct joints and fan housing	$15 – $40	Recommended
Inspection mirror (telescoping)	Inspect duct interiors without full disassembly	$15 – $30	Recommended
Grease containment bags/pans	Catch grease during fan cleaning on rooftop	$20 – $40	Recommended
Portable water tank (65-100 gal)	Water supply when restaurant doesn’t have accessible hot water	$150 – $400	Optional
Generator (3,000+ watt)	Power supply for pressure washer when electrical access is limited	$400 – $1,200	Optional

The Pressure Washer: Your Most Important Investment

The pressure washer is the backbone of your operation. Don’t make the mistake of buying a consumer-grade cold water unit from a home improvement store. You need:

• Hot water capability. Grease doesn’t dissolve in cold water — it just moves around. Hot water (180-200°F) combined with degreaser breaks the molecular bond between grease and metal. This is non-negotiable.
• 3,000-4,000 PSI. Lower pressure won’t remove baked-on deposits. Higher pressure risks damaging ductwork seams and thin-gauge metal.
• 4+ GPM (gallons per minute). Flow rate matters as much as pressure. High GPM flushes dissolved grease out of the system rather than just redistributing it.
• Commercial-grade build. You’ll run this machine 15-30 hours per week. Consumer units fail within months at that duty cycle.

Recommended brands: Landa, Hotsy, Alkota, Mi-T-M. These are the workhorses of the commercial cleaning industry. Expect to spend $3,500-$6,000 for a unit that will last 5-10 years with proper maintenance.

Chemicals and Degreasers

What to Use

You need a commercial-grade alkaline degreaser designed specifically for kitchen exhaust cleaning. These products are typically sold as concentrates that you dilute based on the severity of grease buildup. Common industry brands include Zep, Spartan, ChemStation, and EaCo Chem.

Key properties to look for:

• High alkalinity (pH 12-14) — breaks down animal and vegetable fats effectively
• Foaming capability — foam clings to vertical surfaces and gives the chemical time to work
• Rinse-clean formula — residue that doesn’t rinse clean leaves a film that attracts new grease faster
• Low-odor — you’re working in enclosed spaces at 2 AM; harsh chemical fumes make the job miserable

What to Skip

• Consumer degreasers (Simple Green, etc.) — too weak for baked-on commercial kitchen grease
• Caustic soda / lye — effective but extremely dangerous, damages aluminum components, and creates disposal problems
• Solvent-based degreasers — flammable, toxic fumes, environmental disposal issues. Not appropriate for kitchen exhaust cleaning.

Where to Buy Equipment

Source	Best For	Notes
Pressure washer dealers (Landa, Hotsy distributors)	Pressure washers, chemical pumps	Buy from a dealer with service department — you need fast repairs when your machine goes down
Restaurant supply stores	Scrapers, hand tools, degreasers	Good for consumables and replacement tools
Industrial supply (Grainger, MSC)	PPE, ladders, hoses, fittings	Reliable quality, fast shipping
Amazon / online	LED lights, tarps, small tools	Fine for non-critical items; avoid buying your pressure washer online (you need local service support)
IKECA suppliers / trade shows	Specialty items, certification stickers, training materials	Good networking opportunity and access to industry-specific products

Equipment Maintenance

Your equipment is your business. Maintain it or replace it — there’s no middle ground when you have jobs scheduled.

• Pressure washer: Change oil every 50 hours, replace pump seals annually, flush the system with clean water after every job, winterize if you’re in a freeze zone
• Chemical pump: Flush with clean water after every use (degreaser residue kills seals), replace diaphragm annually
• Hoses: Inspect for wear and leaks before every job. Replace at first sign of damage — a burst high-pressure hose is extremely dangerous
• Scrapers and brushes: Replace when worn. Dull scrapers mean more time per job and higher chemical costs

Frequently Asked Questions

Can I use a cold water pressure washer?

You can, but you’ll use significantly more chemical, spend more time per job, and get inferior results. Cold water moves grease — hot water dissolves it. If budget is tight, start with cold water and upgrade to hot water as soon as revenue allows, but understand that you’re competing against companies with better equipment.

How much does it cost to operate equipment per job?

Typical per-job operating costs: fuel/electricity for pressure washer ($5-$15), degreaser chemical ($10-$25), containment supplies ($5-$10), misc consumables ($5). Total operating cost is roughly $25-$55 per job, making hood cleaning an extremely high-margin service.

Should I buy new or used equipment?

Buy your pressure washer new or certified refurbished from a dealer — you need the warranty and service support. Everything else (hand tools, ladders, wet vac, hoses) can be bought used to save money on startup costs. Check your local Craigslist and Facebook Marketplace for established companies that are selling equipment.

What equipment do I need on day one vs. what can wait?

Day one essentials: pressure washer, chemical pump, degreaser, scrapers, tarps, lighting, ladder, PPE, and certification stickers. Everything marked “Optional” in the table above can be added as your business grows and you encounter specific situations that require them.

Why Start a Hood Cleaning Business?

Hood cleaning is one of the most overlooked small business opportunities in the service industry. Every restaurant, hospital cafeteria, hotel kitchen, school, and food truck with a commercial hood needs regular cleaning — it’s required by fire code, not optional. That means recurring revenue from a customer base that legally cannot stop buying your service.

The startup costs are low compared to most service businesses. The profit margins are high. The work is unglamorous (you’re scraping grease at 2 AM), which keeps competition manageable. And the demand is constant — restaurants don’t stop cooking.

Here’s a realistic look at what it takes to start, what it costs, and what you can actually expect to earn.

Startup Costs: What You’ll Actually Spend

You can start a hood cleaning business for $10,000 to $30,000 depending on whether you buy new or used equipment and how much you invest in marketing upfront. Here’s the realistic breakdown:

Category	Budget Range	Notes
Pressure washer (hot water, 3,000+ PSI)	$2,500 – $6,000	This is your primary tool. Don’t cheap out — buy commercial grade.
Chemical pump / spray system	$300 – $800	For applying degreaser to ductwork and fan housing
Degreaser chemicals (initial stock)	$200 – $500	Industrial-grade degreaser. You’ll spend $50-$100/month ongoing.
Hand tools (scrapers, brushes, putty knives)	$100 – $300	Various sizes for different duct and hood configurations
Containment supplies (tarps, plastic, tape)	$100 – $200	Protects the kitchen from water and chemical overspray
Lighting (LED work lights)	$50 – $150	You’re working inside hoods and ducts — good lighting is essential
Vehicle (van or truck)	$3,000 – $15,000	Used cargo van or pickup with utility bed. Must carry equipment securely.
Insurance (GL + workers’ comp)	$1,500 – $3,000/year	$1M GL minimum. Workers’ comp if you hire employees.
Business formation and licensing	$200 – $500	LLC formation, business license, any local permits required
Training / certification	$500 – $2,000	IKECA training courses, manufacturer training, or apprenticeship time
Marketing (initial)	$500 – $2,000	Website, Google Business Profile, initial ad spend, business cards
Miscellaneous (PPE, ladders, hoses)	$300 – $800	Safety glasses, gloves, boots, extension ladder, hose fittings
TOTAL	$9,250 – $31,250

The wide range comes down to your vehicle situation (already own a truck?) and whether you buy a premium pressure washer upfront or start with a mid-range unit. My recommendation: invest in the pressure washer and insurance — skimp on everything else if you need to.

Revenue Potential: Realistic Numbers

Hood cleaning revenue depends on your market size, pricing, and how aggressively you pursue business. Here’s what the numbers actually look like:

Scenario	Jobs Per Week	Avg Revenue Per Job	Monthly Revenue	Annual Revenue
Solo operator, part-time start	3 – 5	$400	$5,200 – $8,700	$62,400 – $104,000
Solo operator, full-time	6 – 10	$450	$11,700 – $19,500	$140,400 – $234,000
2-person crew, full-time	10 – 15	$500	$21,700 – $32,500	$260,000 – $390,000
Multiple crews	20+	$500	$43,300+	$520,000+

Average job size includes single-hood restaurants ($250-$400) and multi-hood operations ($600-$1,200+). As you build your customer base, recurring quarterly and monthly accounts become the backbone of your revenue — predictable, scheduled work that you can plan your weeks around.

Profit Margins

Hood cleaning is a high-margin business once you’re past the initial equipment investment. Typical margins:

• Solo operator: 60-70% net margin (your biggest cost is your own time)
• With employees: 40-55% net margin (labor is your largest ongoing expense)
• Chemical cost per job: $10-$25 (degreaser is inexpensive in bulk)
• Fuel/vehicle cost per job: $15-$40 depending on territory size

A solo operator doing 8 jobs per week at $450 average generates $3,600/week in revenue. After chemicals ($150), fuel ($200), insurance ($65/week), and miscellaneous expenses ($100), net profit is roughly $3,085/week or $160,000+ annually. That’s before taxes, but it’s real money for a one-person operation.

Essential Equipment Breakdown

For a detailed breakdown of every piece of equipment you’ll need and where to buy it, see our complete hood cleaning equipment list. The three most critical investments are:

1. Hot water pressure washer — 3,000-4,000 PSI, 4+ GPM, with hot water capability. Cold water pressure washers can’t cut through baked-on grease effectively. This is the tool that makes or breaks your cleaning quality.
2. Chemical application system — a 12V pump system that lets you apply degreaser to duct interiors, fan housings, and hard-to-reach areas before pressure washing.
3. Proper containment supplies — plastic sheeting, tarps, and channel systems to contain water and chemical runoff. Flooding a restaurant’s kitchen or dining room is a fast way to lose a customer and face a liability claim.

Training and Certification

You don’t need a license to start a hood cleaning business in most states, but you absolutely need training. Options include:

• IKECA certification — The gold standard. Demonstrates you understand NFPA 96, proper cleaning techniques, and fire safety. Gives you a significant competitive advantage when pitching to larger accounts.
• Manufacturer training — Companies like CaptiveAire and Greenheck offer training on their specific systems.
• Apprenticeship — Working with an established hood cleaning company for 3-6 months gives you hands-on experience that no classroom can replicate. Some markets have enough demand that companies will hire and train you before you branch out on your own.
• NFPA 96 self-study — Buy a copy of the standard and read it cover to cover. Understanding the code is non-negotiable.

Getting Your First Customers

• Google Business Profile — Set this up day one. “Hood cleaning near me” is how most restaurant owners search. Get reviews as fast as possible.
• Door-to-door sales — Visit every restaurant in your area. Ask to see their hood, point out the cleaning sticker date, and offer a competitive quote. This works because most restaurant owners don’t think about hood cleaning until someone reminds them.
• Fire marshal referrals — Introduce yourself to local fire marshals. When they cite a restaurant for an overdue cleaning, they often recommend local companies. Being on their referral list is gold.
• Property management companies — Companies that manage restaurant properties and strip malls often coordinate maintenance for their tenants. One relationship can yield dozens of recurring accounts.
• Google Ads — Target “hood cleaning” + your city. The search volume isn’t huge, but conversion rates are high because searchers have an immediate need.

Frequently Asked Questions

Do I need a special license to clean hoods?

Most states don’t require a specific hood cleaning license, but check your local jurisdiction. Some cities and counties require fire protection contractor licensing or specific business permits. You’ll always need a general business license and insurance regardless of location.

Can I start part-time while keeping my day job?

Absolutely — and this is actually the smartest way to start. Hood cleaning typically happens between 10 PM and 6 AM when restaurants are closed. You can build your customer base and revenue before going full-time. Many successful hood cleaning businesses started exactly this way.

How long does it take to become profitable?

With aggressive marketing and sales effort, most operators are profitable within 2-3 months and have recouped their startup investment within 6-12 months. The key is landing recurring accounts — once a restaurant is on your quarterly schedule, that revenue is predictable and ongoing.

What’s the hardest part of the business?

The work itself is physically demanding and unglamorous — you’re scraping grease in hot, confined spaces at 2 AM. The business challenge is building enough recurring accounts to fill your schedule consistently. Once you have 40-50 recurring accounts, the business essentially runs on autopilot with scheduled routes.

How Grease Builds Up in Kitchen Exhaust Systems

Every time you fire up a fryer, char a burger, or stir-fry on a wok, grease-laden vapor rises off the cooking surface and gets pulled into your exhaust hood. Your baffle filters catch some of it — the larger droplets. But a significant amount of microscopic grease particles pass through the filters and enter the ductwork, where they cool, condense, and stick to every surface from the hood plenum to the rooftop fan housing.

This isn’t a design flaw — it’s physics. Even the best filtration systems from CaptiveAire, Accurex, or Gaylord can’t capture 100% of grease-laden vapor. That’s exactly why NFPA 96 requires regular professional cleaning of the entire system.

But grease buildup isn’t just a cleaning nuisance. It’s the number one cause of restaurant fires in the United States. Understanding where grease accumulates, why it’s dangerous, and how to prevent it can literally save your restaurant.

Restaurant Fire Statistics: The Real Numbers

The National Fire Protection Association reports that U.S. fire departments respond to an average of 7,500 structure fires per year in eating and drinking establishments. Cooking equipment is involved in the vast majority of these fires, and failure to clean the exhaust system is a leading contributing factor.

Statistic	Number	Source
Annual restaurant structure fires (US)	7,500+	NFPA
Fires involving cooking equipment	61% of restaurant fires	NFPA
Leading cause of restaurant fires	Failure to clean cooking equipment/exhaust	NFPA
Average property damage per restaurant fire	$23,000 – $46,000	NFPA / Insurance industry data
Restaurants that never reopen after a major fire	~40%	Industry estimates
Average business interruption from kitchen fire	2 – 6 months	Insurance industry data

These numbers are real, and they hit hardest at independent restaurants that can least afford the downtime and rebuilding costs.

Where Grease Buildup Is Most Dangerous

Hood Plenum

The plenum is the cavity above the baffle filters where grease-laden air collects before entering the ductwork. It’s the first place grease accumulates after passing through the filters, and it’s directly above your cooking equipment. Heavy plenum buildup means a fire on the cooking surface can easily ignite grease directly overhead.

Horizontal Duct Runs

Gravity works against you in horizontal duct sections. Grease condenses on the interior walls and pools at the bottom of horizontal runs. This is the most common location for dangerous buildup levels, and it’s the area most likely to be neglected by cut-rate cleaning companies that only wipe down the hood canopy.

Elbows and Transitions

Every change in direction creates turbulence that causes grease particles to drop out of the airstream and stick. Elbows and transitions accumulate grease faster than straight runs. This is why NFPA 96 requires access panels at every change in direction — without them, these critical areas can’t be cleaned or inspected.

Exhaust Fan Housing

Grease buildup on exhaust fan blades and housing reduces airflow efficiency and creates a concentrated fuel load on the rooftop. A fan fire can quickly spread to the building’s roof structure.

How Grease Fires Start and Spread in Exhaust Systems

Here’s the typical sequence of a kitchen exhaust fire:

1. Ignition. A flare-up on the cooking surface — a grease spill on a burner, an overheated fryer, a flaming charbroiler — sends flames up into the hood.
2. Plenum ignition. Flames contact accumulated grease in the hood plenum. The fire suppression system should activate here, but if it hasn’t been maintained or if grease levels are extreme, the fire may overpower it.
3. Duct fire. Burning grease in the plenum ignites grease deposits in the ductwork. This is where things get catastrophic — a duct fire is essentially a chimney fire inside your building’s walls and ceiling.
4. Structural spread. Fire travels through the ductwork to the rooftop, potentially igniting roofing materials. Inside the building, duct fire can breach duct walls and ignite surrounding building materials.

The entire sequence can happen in minutes. A clean exhaust system breaks this chain at step 2 — there’s no fuel in the plenum or ducts to sustain the fire.

Prevention: Your Three Lines of Defense

1. Professional Cleaning on Schedule

This is your primary defense. Follow the NFPA 96 cleaning schedule based on your cooking type and volume. Don’t stretch intervals. Don’t skip cleanings to save money. The cost of a hood cleaning is $250-$600 — the cost of a kitchen fire averages $23,000-$46,000 in direct damage, plus months of lost revenue.

2. Daily Filter Maintenance

Your baffle filters are the first line of grease capture. Maintain them properly:

• Run filters through the dish machine daily or at minimum weekly
• Replace warped, bent, or damaged filters immediately
• Never operate the hood without all filters in place — every gap is grease bypassing the filters
• Never use mesh or charcoal filters in place of baffle filters over grease-producing equipment

3. Proper Cooking Practices

Your cooking practices directly affect how much grease enters the exhaust system:

• Don’t overheat cooking oil — overheated oil produces more grease vapor and increases flare-up risk
• Keep fryer oil at proper levels and change it on schedule
• Clean cooking surfaces regularly to prevent grease pooling
• Train staff on flare-up response — smother, don’t splash
• Keep areas under the hood clear of combustibles (cardboard boxes, paper towels, cleaning supplies)

What to Do If You Suspect Heavy Buildup

If you notice any of these signs, schedule an immediate cleaning — don’t wait for your next scheduled service:

• Visible grease dripping from the hood or ductwork
• Grease odor in areas away from the kitchen
• Grease staining on ceilings or walls near duct runs
• Reduced hood suction or kitchen filling with smoke
• Grease cups filling much faster than normal

A reputable cleaning company can often schedule emergency service within 24-48 hours. Yes, it may cost a premium. No, it’s not worth waiting.

Frequently Asked Questions

How quickly does grease build up in ductwork?

It depends entirely on cooking type and volume. A high-volume charbroiler operation can produce dangerous buildup levels in 4-6 weeks. A low-volume operation producing minimal grease (steam tables, ovens) may take 6-12 months. This is exactly why NFPA 96 sets different cleaning frequencies for different cooking types.

Can grease buildup affect my kitchen’s air quality?

Absolutely. Heavy grease buildup restricts airflow through the exhaust system, which means smoke, steam, and cooking odors aren’t being properly removed. Your kitchen gets hotter, your line cooks are breathing more contaminants, and cooking smells migrate to the dining room. Proper cleaning restores full airflow capacity.

Will my insurance cover a grease fire?

Only if you can prove you were maintaining your exhaust system per NFPA 96. Insurance adjusters will request your cleaning records, fire suppression inspection reports, and may send their own inspector to examine the system post-fire. If you can’t demonstrate compliance, your claim may be partially or fully denied. Keep your records.

Are some cooking methods worse than others for grease buildup?

Yes, significantly. Charbroiling and wok cooking produce the most grease-laden vapor. Deep frying is moderate. Baking, steaming, and using steam tables produce minimal grease. This is why a charbroiler restaurant needs monthly cleaning while a bakery may only need annual cleaning.

Kitchen Exhaust Fan Cleaning: What It Costs and Why It Matters

Your rooftop exhaust fan is the engine of your entire kitchen ventilation system. It pulls smoke, heat, grease-laden vapor, and cooking odors up through the hood, through the ductwork, and out of the building. When that fan is caked in grease or failing mechanically, your whole kitchen suffers — poor ventilation, higher temperatures on the line, grease backing up in the ducts, and a serious fire risk.

Having installed and serviced CaptiveAire, Accurex, and Gaylord exhaust systems for years, I can tell you that the exhaust fan is the most neglected component in most commercial kitchens. Here’s what you need to know about cleaning costs, replacement costs, and the warning signs that your fan needs attention.

Exhaust Fan Cleaning Cost

Most professional hood cleaning companies include basic exhaust fan cleaning as part of their standard service. If they don’t, that’s a red flag — the fan is a critical part of the exhaust system and must be cleaned per NFPA 96.

Service Type	Cost Range	What’s Included
Fan cleaning (included in hood cleaning)	$0 (bundled)	Fan blades, interior housing, hinge kit check, grease containment emptied
Fan cleaning (standalone service)	$75 – $200 per fan	Same as above, billed separately if not part of full system cleaning
Fan cleaning with belt replacement	$125 – $275	Cleaning plus new drive belts (belt-drive fans only)
Fan cleaning with hinge kit repair	$150 – $350	Cleaning plus hinge kit rebuild or replacement for fan access
Deep cleaning (heavily neglected fan)	$200 – $400	Extended soak, heavy scraping, possible chemical treatment for baked-on grease

If a hood cleaning company quotes you for “hood cleaning” but doesn’t include the exhaust fan, get a different company. A system that’s cleaned from hood to plenum but not at the fan and rooftop termination isn’t properly cleaned.

Exhaust Fan Replacement Cost

Exhaust fans don’t last forever. Between grease exposure, weather, constant operation, and mechanical wear, most commercial kitchen exhaust fans have a lifespan of 10-20 years depending on maintenance and usage. When replacement time comes, here’s what to expect:

Fan Size (CFM)	Fan Unit Cost	Installation Cost	Total Installed	Typical Application
500 – 1,500 CFM	$300 – $800	$200 – $500	$500 – $1,300	Small cafe, food truck, single-hood setup
1,500 – 3,000 CFM	$600 – $1,500	$400 – $800	$1,000 – $2,300	Standard restaurant, single or double hood
3,000 – 5,000 CFM	$1,200 – $2,000	$600 – $1,000	$1,800 – $3,000	High-volume restaurant, institutional kitchen
5,000+ CFM	$1,800 – $3,500+	$800 – $1,500	$2,600 – $5,000+	Large institutional, multi-hood systems

These prices are for upblast exhaust fans, which are the standard for commercial kitchen exhaust. Prices include the fan unit, roof curb adapter (if compatible with existing curb), electrical connection, and startup testing. If your existing roof curb is a non-standard size or damaged, add $300-$800 for a new curb and roofing work.

Signs Your Exhaust Fan Needs Replacement

Don’t wait for complete failure. These warning signs mean your fan is on borrowed time:

Excessive Noise or Vibration

A healthy exhaust fan produces a steady hum. If you’re hearing grinding, squealing, rattling, or if you can feel vibration through the ductwork, the bearings are likely failing. Bearing replacement can sometimes extend the fan’s life, but if the fan is 15+ years old, replacement is usually more cost-effective.

Reduced Airflow

If your kitchen feels smokier or hotter than usual, or if cooking odors are hanging in the dining room, your fan may have lost capacity. This could be grease buildup on the blades (cleanable) or a motor that’s losing power (replacement territory). A simple test: hold a paper towel near the hood filters — it should be pulled firmly against the filter face. If it barely moves, your fan isn’t pulling enough air.

Grease Leaking Down the Ductwork

When grease appears on the exterior of ductwork or starts dripping from seams, it often means the fan’s grease containment has failed or the fan housing is so caked with grease that it’s overflowing back into the system. This is a fire hazard that needs immediate attention.

Fan Won’t Tip Up for Cleaning

Upblast fans are designed with a hinge kit so the fan assembly tips up, giving access to the duct termination point for cleaning. If grease, rust, or mechanical failure prevents the fan from hinging open, the crew can’t properly clean the system. Hinge kit repair runs $100-$300, but if the fan housing is corroded beyond repair, it’s replacement time.

Motor Tripping Breakers

If the fan motor repeatedly trips its circuit breaker, the motor is drawing excessive current — usually from worn bearings, a failing winding, or a locked rotor condition. This is both a fire risk (overheating) and a sign of imminent failure.

Belt-Drive vs. Direct-Drive Fans

Older exhaust systems typically use belt-drive fans, while newer installations increasingly use direct-drive. Here’s how they compare:

Feature	Belt-Drive	Direct-Drive
Maintenance	Higher — belts wear and need replacement every 6-12 months	Lower — no belts to replace
Efficiency	Lower — belt friction wastes 5-10% of motor energy	Higher — motor connects directly to fan wheel
Cost	Lower upfront	10-20% higher upfront, lower lifetime cost
Speed Adjustment	Adjustable via pulley changes	Requires VFD (variable frequency drive) for adjustment
Lifespan	10-15 years typical	15-20 years typical

If you’re replacing a belt-drive fan, consider upgrading to direct-drive. The upfront premium pays for itself in reduced maintenance and energy savings within 2-3 years.

Maintaining Your Exhaust Fan Between Cleanings

• Check grease containment monthly. The grease cup or containment curb on the roof should be emptied before it overflows. Overflowing grease damages your roof and creates a fire risk.
• Listen for changes. Any new noise — grinding, squealing, rattling — should be investigated promptly.
• Check belt tension quarterly (belt-drive fans only). A loose belt reduces airflow and wears faster. A belt that’s too tight strains the bearings.
• Keep the area around the fan clear. No storage, debris, or equipment should be within 3 feet of the fan on the rooftop.

Frequently Asked Questions

Is exhaust fan cleaning included in hood cleaning?

It should be. Any reputable hood cleaning company includes the exhaust fan as part of the complete system cleaning. If a company only cleans the hood canopy and filters but skips the fan and ductwork, they’re not providing a proper NFPA 96-compliant cleaning. Always confirm the scope of work before hiring.

How long does exhaust fan replacement take?

A straightforward replacement — same size fan on an existing roof curb — typically takes 2-4 hours. If the roof curb needs modification or replacement, add another 2-4 hours plus roofing work. Most companies can complete the job in a single visit.

Can I replace the fan myself?

Technically possible if you’re handy, but not recommended. Exhaust fan replacement involves rooftop work, electrical connections, and ensuring the fan is properly matched to your system’s CFM requirements. A mismatched fan can under-ventilate your kitchen (fire risk) or over-ventilate it (wasted energy and makeup air problems). Have a qualified kitchen ventilation contractor handle it.

What brand of fan should I buy?

CaptiveAire, Greenheck, and?”Loren Cook are the big three for commercial kitchen exhaust fans. CaptiveAire is the most common in restaurant applications and offers good availability of parts and support. Greenheck has excellent build quality. Match the brand to your existing roof curb when possible to avoid curb adapter costs.

What Do Hood Inspectors Actually Check?

A kitchen hood inspection can come from your fire marshal, your insurance company, or your local health department — and they don’t always give you advance notice. The good news is that if you’re maintaining your exhaust system properly, you have nothing to worry about. The bad news is that most restaurants have at least one issue they don’t know about.

After years working with CaptiveAire, Accurex, and Gaylord ventilation systems, I’ve been present for hundreds of inspections. Here’s exactly what inspectors look for, what causes restaurants to fail, and how to make sure you pass every time.

Complete Hood Inspection Checklist

Print this out and walk through your kitchen with it before your next inspection. Every item below is something an inspector will check.

Hood and Canopy

• Hood interior cleaned to bare metal — no visible grease buildup
• Current cleaning certification sticker with date and next-due date
• Cleaning records on file and accessible
• Hood properly mounted and secured
• No gaps between hood and wall/ceiling
• Proper overhang over all cooking equipment (typically 6 inches on open sides)

Grease Filters (Baffles)

• All filter slots filled — no gaps or missing filters
• Filters properly oriented (baffles running vertically to allow grease drainage)
• Filters clean and not warped or damaged
• Correct filter type for the hood (UL 1046 listed)
• Filters fit snugly with no bypass gaps

Ductwork

• Access panels present at every change in direction and at horizontal runs
• Access panels properly sealed when not in use
• Interior cleaned to bare metal (inspector may open panels to check)
• No visible grease leaking from seams or joints
• Proper clearance to combustibles maintained
• All duct joints sealed and secure

Exhaust Fan

• Fan operational and running at proper speed
• Fan blades and housing cleaned
• Hinge kit functional (fan tips up for cleaning access)
• Grease containment device in place and functional
• No excessive vibration or noise indicating bearing failure
• Electrical connections secure and weatherproofed

Fire Suppression System

• Current inspection tag (semi-annual inspection required)
• Nozzles properly aimed at cooking surfaces and hood plenum
• Fusible links in place and not painted over or grease-coated
• Manual pull station accessible and clearly labeled
• Gas shutoff connected and functional
• System not obstructed by equipment or storage

Grease Cups and Drip Trays

• Grease cups installed and not overflowing
• Evidence of regular emptying (cups less than half full)
• No grease pooling on surfaces below the hood

Most Common Reasons Restaurants Fail Inspections

Failure Reason	How Common	How to Fix It
Overdue cleaning (no current sticker)	Very Common	Schedule cleaning immediately; keep a calendar reminder 2 weeks before due date
Missing or outdated fire suppression inspection tag	Very Common	Schedule semi-annual inspections; many hood cleaning companies also service suppression systems
Grease cups overflowing or not installed	Common	Empty daily; assign to closing checklist
Missing or damaged baffle filters	Common	Replace immediately — filters are $15-$30 each and available from your hood manufacturer or restaurant supply
Missing duct access panels	Moderate	Have your cleaning company or HVAC contractor install them at required locations
Fusible links missing or grease-coated	Moderate	Replace during fire suppression inspection; should be checked at every hood cleaning
Fan not operational or grease containment missing	Moderate	Repair or replace fan; install grease containment cup/curb on roof
No cleaning records available	Common	Keep a binder near the hood with all cleaning certificates, inspection reports, and before/after photos

Pre-Inspection Preparation: What to Do Before the Inspector Arrives

One Week Before (If Scheduled)

• Verify your hood cleaning is current — check the certification sticker date
• Verify your fire suppression inspection tag is current (must be within 6 months)
• Gather all cleaning records and certificates into one accessible location
• Walk through the checklist above and note any issues
• Schedule repairs for anything out of compliance

Day Of Inspection

• Ensure all grease cups are emptied and clean
• Verify all baffle filters are in place and properly oriented
• Check that the manual pull station for fire suppression is accessible (not blocked by equipment or boxes)
• Make sure the exhaust fan is running and there are no unusual noises
• Have your cleaning records binder ready to show the inspector
• Ensure access to the rooftop for fan inspection

What Happens If You Fail

Failing a hood inspection doesn’t necessarily mean immediate shutdown, but it does mean documented violations that must be corrected within a specified timeframe — typically 30 to 90 days depending on severity.

Critical violations like a non-functional fire suppression system, blocked emergency exits, or extreme grease buildup that presents an imminent fire hazard can result in immediate cease-of-cooking-operations orders. You can still serve food that doesn’t require the exhaust system, but you can’t fire up the grills and fryers until the issue is resolved.

Re-inspection fees vary by jurisdiction but typically run $100 to $500 per visit. Multiple failures or a pattern of non-compliance can result in escalating fines and increased scrutiny.

Staying Inspection-Ready Year-Round

The best approach is maintenance that makes inspections a non-event. Follow the NFPA 96 cleaning schedule, keep fire suppression current, and build these daily tasks into your closing checklist:

• Empty all grease cups and trays
• Wipe down accessible hood surfaces
• Check that all filters are in place
• Verify exhaust fan is running normally
• Note any unusual odors, noises, or visible grease accumulation

If you do these five things daily and keep your professional cleanings on schedule, you’ll pass every inspection without scrambling.

Frequently Asked Questions

How often do fire marshals inspect restaurant kitchens?

Frequency varies by jurisdiction. Most areas conduct annual inspections, but high-risk operations or restaurants with prior violations may be inspected more frequently. Some fire departments also conduct random unannounced inspections. Always be ready.

Can I be shut down for a dirty hood?

Yes. If the fire marshal determines that grease buildup presents an imminent fire hazard, they can order you to stop cooking operations immediately until the system is cleaned. This is rare for first-time minor issues but absolutely happens when hoods are severely overdue for cleaning.

Does my health department inspector also check the hood?

Health department inspectors primarily focus on food safety, but most will note visible hood cleanliness issues and may flag extremely dirty hoods. The detailed NFPA 96 compliance inspection is typically the fire marshal’s domain. However, a health department note about a dirty hood can trigger a fire marshal visit.

What documentation should I keep on file?

Keep the following for a minimum of 3 years: hood cleaning certificates with dates and company information, before/after photos from each cleaning, fire suppression inspection reports, any written deficiency reports, and receipts for repairs or equipment replacements. Store these in a binder near the hood or in a shared digital folder that your manager can access during an inspection.

What Is NFPA 96 and Why Should You Care?

NFPA 96 is the National Fire Protection Association’s standard for ventilation control and fire protection of commercial cooking operations. In plain English, it’s the rulebook that governs how your kitchen exhaust system must be installed, operated, and maintained — including how often it gets cleaned.

Every fire marshal in the country references NFPA 96. Every commercial kitchen insurance policy assumes compliance with it. And every restaurant owner needs to understand it, because ignorance doesn’t protect you from fines, shutdowns, or denied insurance claims.

After years working with CaptiveAire, Accurex, and Gaylord ventilation systems, I’ve seen firsthand what happens when restaurants ignore this standard — and it’s never pretty. Here’s what you actually need to know.

NFPA 96 Cleaning Frequency Requirements

The most important section for restaurant owners is the cleaning frequency table. NFPA 96 Section 11.4 specifies how often your entire exhaust system — hoods, ducts, and fans — must be cleaned based on the type and volume of cooking you do.

Cooking Operation Type	Required Cleaning Frequency	Real-World Examples
Systems serving solid fuel cooking	Monthly	Wood-fired pizza, wood/charcoal grills, smokers
Systems serving high-volume cooking (charbroiling, wok cooking)	Monthly	Burger chains, Chinese restaurants, 24-hour diners
Systems serving moderate-volume cooking	Quarterly	Full-service restaurants, hotel kitchens, fast food with fryers
Systems serving low-volume cooking	Semi-Annually	Churches, day camps, seasonal businesses, senior centers
Systems serving minimal grease-producing operations	Annually	Pizza-only shops (no fryers), snack bars, steam-table cafeterias

These are minimum frequencies. If your system shows heavy grease buildup before the next scheduled cleaning, you need to increase frequency. The standard puts this responsibility on you as the building owner or operator.

What NFPA 96 Actually Requires (Beyond Just Cleaning)

Qualified Personnel

NFPA 96 requires that exhaust system cleaning be performed by trained, qualified individuals. The standard specifically references IKECA certification as a benchmark for qualified cleaners. Your nephew with a pressure washer doesn’t meet the standard, no matter how thorough he is.

Cleaning to Bare Metal

Section 11.4.1 states that hoods, grease removal devices, fans, ducts, and other appurtenances shall be cleaned to remove combustible contaminants. The industry standard is “bare metal” — meaning all grease deposits are removed down to the original metal surface. A quick wipe-down doesn’t satisfy this requirement.

Access Panels

Your ductwork must have adequate access panels to allow thorough cleaning and inspection of the entire duct run. NFPA 96 Section 11.6.2 requires access panels at every change in direction, at horizontal duct sections, and at fan connections. If your system lacks access panels, a responsible cleaning company will recommend installing them — and your fire marshal may require it.

Documentation and Certification

After each cleaning, the cleaning company must provide written documentation including the date of service, areas cleaned, and any deficiencies found. A certification sticker should be placed on the hood showing the date cleaned and next cleaning due date. Keep these records — fire marshals and insurance adjusters will ask for them.

What Fire Marshals Look For

Fire inspections can be scheduled or surprise visits. Here’s what the inspector will check against NFPA 96 standards:

• Cleaning certification stickers — current dates showing you’re on schedule
• Cleaning records on file — documented proof of each cleaning with company name and scope of work
• Visual inspection of hood interior — looking for grease buildup, especially around filters and the plenum area
• Access panels — present, operational, and properly sealed
• Fire suppression system — current inspection tags, nozzle alignment, fusible links intact (more on fire suppression)
• Exhaust fan condition — operational, properly connected, grease containment in place (exhaust fan guide)
• Clearance to combustibles — proper spacing between exhaust system components and building materials

Consequences of Non-Compliance

Failing to comply with NFPA 96 isn’t a theoretical risk. Here’s what actually happens:

Consequence	Details	Typical Impact
Fire Marshal Citations	Written violations requiring correction within 30-90 days	$200 – $2,000 per violation depending on jurisdiction
Temporary Closure	Fire marshal can shut down kitchen operations until violations are corrected	Lost revenue: $1,000 – $10,000+ per day
Insurance Claim Denial	Insurer denies fire or grease damage claims due to maintenance non-compliance	$50,000 – $500,000+ in unrecovered losses
Increased Premiums	History of violations raises your commercial property and liability premiums	15-40% premium increase
Lawsuits	Employee injury or customer harm from fire leads to negligence claims	$100,000 – millions in liability

The cost of a proper hood cleaning — $250 to $600 per hood — is trivial compared to any of these outcomes. There’s no scenario where skipping or delaying cleaning saves you money.

How to Stay Compliant

• Know your frequency. Determine your cleaning schedule based on the table above. If you’re unsure, use the hood cleaning frequency calculator.
• Hire qualified cleaners. Use IKECA-certified companies or companies that can demonstrate NFPA 96 training and knowledge.
• Keep records. Maintain a file (physical or digital) with every cleaning certificate, before/after photo set, and written report. Make it accessible for inspections.
• Don’t ignore deficiencies. If your cleaning company reports issues — damaged ductwork, missing access panels, fan problems — address them promptly. Documented deficiencies that go unrepaired become liability time bombs.
• Maintain between cleanings. Daily grease cup emptying, weekly baffle filter cleaning, and visual inspections of accessible surfaces help prevent dangerous buildup between scheduled professional cleanings.

NFPA 96 vs. Local Codes

NFPA 96 is a national standard, but your local jurisdiction may have additional or stricter requirements. Some cities require specific licensing for hood cleaning companies. Some states require quarterly cleaning regardless of cooking type. Always check with your local fire marshal’s office for jurisdiction-specific rules that supplement NFPA 96.

Frequently Asked Questions

Is NFPA 96 a law?

NFPA 96 itself is a standard, not a law. However, it becomes legally enforceable when adopted by your local or state fire code — and virtually every jurisdiction in the United States has adopted it. So for practical purposes, yes, you must comply with it.

What year version of NFPA 96 applies to my restaurant?

The version that applies depends on which edition your local jurisdiction has adopted. Most jurisdictions are on the 2021 or 2024 edition. Contact your local fire marshal’s office or authority having jurisdiction (AHJ) to confirm which version applies to you.

Can I self-certify my hood cleaning?

No. NFPA 96 requires cleaning by trained, qualified personnel. Self-certification would not be accepted by fire inspectors or insurance companies. You need documentation from a professional cleaning company that includes date, scope of work, and company credentials.

What if my cleaning company says I only need annual cleaning but my fire marshal says quarterly?

Follow the stricter requirement. Your local authority having jurisdiction (AHJ) — typically the fire marshal — has the final say on cleaning frequency in your area. Some jurisdictions apply stricter schedules than NFPA 96 minimums. When in doubt, clean more often.