GreasersHood Cleaning Directory

THE STANDARD

NFPA 96 IN PLAIN ENGLISH.

The standard that governs commercial kitchen exhaust systems in almost every U.S. jurisdiction. We'll break down what it actually requires — cleaning frequencies, access panels, grease-duct enclosures, documentation — and what fire marshals are looking for when they show up.

THE BASICS

What NFPA 96 is (and isn't)

NFPA 96 is the National Fire Protection Association's standard for ventilation control and fire protection of commercial cooking operations. It is the answer to the question 'how do we keep kitchens from burning down?'

NFPA 96 covers every part of your exhaust system: the hood, the filters, the vertical duct run, the rooftop fan, and the suppression system above the line. It sets rules for how each is designed, maintained, inspected, and documented. If you cook with grease-laden vapors, NFPA 96 applies to you.

It does not tell you how the cleaning must be performed — it tells you the system must end up in a specific condition. A hood that's been wiped down with a paper towel doesn't meet NFPA 96 even if your filters are spotless, because the standard requires the entire system to be cleaned to bare metal (or as close as practicable) at the required frequency.

FREQUENCY

How often you actually have to clean

NFPA 96 Section 11.4 — the table that causes the most arguments between operators and inspectors.

OperationMinimum FrequencyExamples
Solid-fuel cookingMonthlyWood-fired pizza, mesquite grills, charbroiled barbecue
High-volume (24-hour operations, charbroiling, wok)Quarterly (every 3 months)24-hour diners, charbroil-heavy concepts, ghost kitchens
Moderate-volumeSemi-annually (every 6 months)Most sit-down restaurants, hotel kitchens, catering halls
Low-volume (seasonal kitchens, churches, day camps)AnnuallySeasonal concessions, churches, temporary kitchens

Your local AHJ can require more frequent cleaning. They cannot require less.

WHAT GETS CHECKED

What a fire marshal actually looks at

The inspection sticker

First thing checked. Date of last service, tech name, company, and the areas serviced. Missing sticker = automatic citation in most markets.

The grease depth inside the hood

They will run a finger along the interior. More than 1/8" (0.125 inch / 3mm) of accumulated grease anywhere in the system is a violation.

Access panels

NFPA 96 requires access panels every 12 ft of horizontal duct and at every change of direction. Missing access = the system can't be inspected end-to-end = violation.

Filters

UL 1046 grease-listed baffle filters. No mesh, no aluminum mesh, no paper — baffle filters only, installed vertically.

Gap between hood and ceiling (clearance)

Combustible clearance rules depend on duct construction — usually 18" from unlisted duct, down to 0" with a listed grease duct. Inspectors carry a tape measure.

Suppression system

Gauge reading, tamper seals, fusible links not older than 6 months, nozzle caps intact. NFPA 17A applies here more than 96, but they cite both.

THE REFERENCE

If you run or inspect kitchens, buy the standard

NFPA publishes the document. You can access a read-only version for free — but for anyone actually working in this trade, buy a copy. The margins get filled in over time and that's how you learn it.

Reference

NFPA — National Fire Protection Association

The actual NFPA 96 standard. Buying the current edition is the single highest-leverage purchase a new hood cleaner can make. Updated on a three-year cycle.

~$75 digital, ~$95 print

Visit NFPA

Certification

IKECA — International Kitchen Exhaust Cleaning Association

The trade association that writes the playbook most fire marshals trust. CECS and CESI are the most recognized hood-cleaning certifications in the U.S.

Membership from $475 / year; CECS exam ~$395

Visit IKECA

Training

NAFED — National Association of Fire Equipment Distributors

Trainings on fire suppression systems (Ansul, Amerex). Useful add-on if you want to test and certify kitchen fire suppression alongside hood cleaning.

Visit NAFED

Some links on this page are affiliate links. If you buy through them, we may earn a small commission at no additional cost to you. We only recommend products and training we'd point a new operator toward anyway — the affiliate relationship doesn't buy a listing.

SEE THE CERTIFICATIONS THAT BACK UP NFPA 96 COMPLIANCE

NFPA 96 says the system must be cleaned — it doesn't say who must clean it. That's where certifications come in. CECS is the credential your insurance carrier wants to see.

COMPARE CERTIFICATIONS

NFPA 96 FAQs

Is NFPA 96 actually law?
NFPA 96 is a consensus standard, not a federal law. But it's adopted by reference in the International Fire Code and in most state and local fire codes — which means in practice, in almost every U.S. jurisdiction, NFPA 96 is the standard your fire marshal inspects against.
Who is legally responsible for NFPA 96 compliance — the restaurant or the landlord?
The building owner and the tenant both carry some responsibility, but the day-to-day operator (the restaurant) is almost always the entity cited. Your lease may shift cleaning costs to one party or the other, but the fire code citation lands on whoever holds the occupancy permit.
What happens if I fail an NFPA 96 inspection?
Typical escalation: notice to correct (30-day cure), re-inspection, fines starting around $500–$2,500 per violation, and — in severe cases — an order to cease cooking operations until remediation. Insurance carriers also use failed inspections to deny kitchen-fire claims.
Does my hood cleaning company need to be certified?
NFPA 96 doesn't require a specific cleaning company certification — it requires the work meet the standard. That said, the IKECA CECS certification is what fire marshals and insurance adjusters look for. A CECS-credentialed tech is the de-facto standard for defensible documentation.
Do I have to keep cleaning records?
Yes. NFPA 96 Section 11.6.13 explicitly requires that inspection and cleaning records be kept on the premises and made available to the AHJ (authority having jurisdiction — usually the fire marshal). Missing records is one of the most common citations.