NFPA 96 hood cleaning requirements: A guide for Ontario restaurant owners
October 15, 2026
The NFPA 96 standard is one of the most critical frameworks guiding restaurants and commercial kitchens in Ontario.
Yet many operators still do not have a complete grasp of what this standard means and how it applies to their kitchen. At best, some know that cleaning their kitchen hood and vent matters, but very few know what the standard behind it requires.
This article breaks down
NFPA 96 hood cleaning requirements for Ontario kitchens, including how often cleaning is needed, what a compliant service covers, and what to look for in a contractor.
What is NFPA 96, and does it apply to your Ontario kitchen?
In 1946, the National Fire Protection Association- the world’s leading resource on fire, electrical, and related hazard-introduced a set of guidelines for restaurant ventilation. First introduced as NFPA 91, the guidelines were later transitioned to a dedicated committee as a standalone standard.
The standalone standard officially established NFPA 96 as the definitive code for commercial kitchen fire safety.
Over the subsequent decades, the standard expanded from basic vapor removal guidelines into a comprehensive regulation governing exhaust systems, grease filters, and fire suppression.
Today, it serves as the universal benchmark for preventing, controlling, and extinguishing fires in commercial cooking operations worldwide, including Ontario.
NFPA 96 is legally binding across this province because both the Ontario Building Code and the Ontario Fire Code directly adopt it by reference. With this adoption, all commercial kitchens in Ontario must comply with the maintenance rules.
Under Division B (Articles 2.6.1.12 and 2.6.1.13), existing exhaust and fire-protection systems must be continuously maintained according to NFPA 96 standards. Municipal fire departments (such as Greater Sudbury Fire Services) act as the Authority Having Jurisdiction (AHJ). Prevention officers from these departments can inspect commercial kitchens in Ontario and issue immediate compliance orders if systems are not properly maintained or lack documentation of maintenance.
How often does a commercial kitchen hood need cleaning?
In an episode of Reliable Resource- a social media series where Reliable Cleaning Services answers the most-asked questions about cleaning and maintenance- John Lafantaisie, the company’s in-house cleaning expert, said that most commercial kitchens need hood cleaning twice a year.
However, the right frequency depends on what a commercial kitchen is cooking and how much. High-volume kitchens and operations running charbroilers or wok stations produce significantly more grease vapor than a standard cooking line, and their systems accumulate buildup faster. Those kitchens often need quarterly service. Operations running solid-fuel cooking- wood-burning ovens, charcoal grills- can require monthly cleaning because of the volume and type of residue produced.
On the other end of the scale, low-volume operations like seasonal kitchens, church halls, and community centres may only need an annual clean. The system isn’t running as hard or as often, so the buildup accumulates more slowly.
What matters is an honest assessment of the operation of the kitchen-not a default schedule inherited from a previous owner or set years ago when the kitchen ran differently.
A kitchen that has scaled up its volume, added high-output equipment, or changed its menu may need more frequent service than it’s currently getting without anyone having flagged it.
If an operator is unsure where its operation falls, the right starting point is having someone assess the system and recommend a schedule based on what’s actually happening in the kitchen- not what’s on the calendar.
What a compliant hood cleaning includes
Reliable Cleaning Services has designed its hood and vent cleaning service to ensure it leaves commercial kitchens compliant with NFPA 96 standards.
The professional crew starts with a full inspection of the entire system before any cleaning begins. From there, the work covers the hood itself, the baffle filters, UV bulbs and lighting fixtures inside the hood, the internal ductwork running both vertically and horizontally through the ceiling and walls, the exhaust fan and belt on the rooftop, drainage trays, fan blades, grease containment systems, and any mechanical components connected to the exhaust infrastructure.
After the inspection, the crew cleans the entire system to bare metal where accessible, meaning grease is removed from the system entirely, not just from the surfaces you can see.
Every job finishes with a service report including before-and-after photos, sent to you for your maintenance records and ready for your next fire inspection.
What fire inspectors and insurers look for
In Ontario, fire inspectors and commercial insurers evaluate the condition of the entire exhaust hood system and verify that maintenance reports meet Ontario Fire Code and NFPA 96 standards.
The inspection covers the whole system, examining the thoroughness of the cleaning and checking for any visible grease accumulation inside the hood, ducts, and fans. Inspectors cross-reference the physical condition of the system against available maintenance records. Documentation showing regular service will not be considered satisfactory if visible grease remains in the system.
Proper documentation is essential for proving NFPA 96 compliance during a fire inspection or insurance audit. Every commercial kitchen must display a valid, up-to-date service sticker directly on the hood showing the date of the last cleaning and when the next service is due.
Alongside the sticker, operators should keep a detailed post-cleaning report from the service provider on file. This report must include timestamped before-and-after photographs verifying that the hood, ducts, and fans were cleaned to bare metal, while clearly noting any inaccessible areas that could not be reached.
Finally, the report should highlight any mechanical issues, structural deficiencies, or potential fire hazards discovered during the service so you can address them before they become a violation.
Beyond the paperwork, inspectors also scrutinize the service provider. They verify who carried out the work and confirm whether the technician holds the proper qualifications to clean commercial hoods and vents to NFPA 96 standards.
Reliable Cleaning Services has built a full-service program with certification, experience, and tools that go far beyond the average cleaning crew. Backed by a Phil Ackland Certification- the most respected designation in the industry, obtained in 2021- the cleaning meets international and Ontario’s standards for safety, thoroughness, and documentation.
Signs your kitchen exhaust system is overdue for cleaning
The clearest warning sign is visible grease on the baffle filters, inside the hood canopy, or around the rooftop fan housing. A simple way to check is the fingernail test: if you can scrape off a noticeable layer of residue, the buildup is likely approaching or exceeding the NFPA 96 limit.
Poor airflow is another common sign. You may notice smoke lingering over the cookline, excessive heat building up in the kitchen, or cooking odours drifting into the dining room instead of venting outside.
Physical leaks and mechanical strain also point to overdue maintenance. Watch for grease dripping from the hood seams, dark staining on the roof around the exhaust fan, or the fan motor running louder than usual as it strains against heavy buildup. Any of these signs means your system needs immediate service- and waiting for a failed fire inspection or an insurance penalty is a far more expensive way to find out.
How to choose a commercial hood cleaning company in Ontario
Choosing a commercial hood and vent cleaning company is the first critical step in ensuring that a commercial kitchen is NFPA 96 compliant.
As mentioned earlier, inspectors and insurers do not just look at the hood itself; they also examine the service providers in hood and vent cleaning to verify that the technicians hold the proper qualifications to clean the system to NFPA 96 standards.
Because of this, the very first question every Ontario kitchen operator should ask before hiring a commercial hood and vent cleaning company is simple: “Do they have the right qualifications to make their kitchens NFPA 96 compliant?”
Commercial hood cleaning from Reliable Cleaning Services
Reliable Cleaning Services is the standard when it comes to commercial hood and vent cleaning across Northern Ontario.
In 2021, John travelled to Texas to train directly with a Phil Ackland Certification trainer- earning the most respected designation in the commercial kitchen exhaust industry. That credential is a major differentiator for Reliable Cleaning Services.
Alongside John, Reliable Cleaning Services also has a specialized crew that works exclusively on kitchen exhaust systems, not general cleaners. Many of its technicians have 5–10+ years of focused experience in this niche.
With Reliable Cleaning Services, kitchen operators get the full deal:
Rooftop exhaust systems and grease containment trays- Internal duct runs, fans, and mechanical blades
- Lighting fixtures and UV bulbs
- Baffle filters and fan belts
- Drainage systems and grease overflow areas
Reliable Cleaning Services also delivers post-cleaning documentation that meets NFPA 96 standards. This includes inspection stickers, reports, and photo logs, the records fire inspectors and commercial insurers need to confirm a kitchen is compliant.
Reliable Cleaning Services has been serving Northern Ontario kitchens for decades and has continually used its hands-on field experience to develop solutions.
Top among those solutions is the Amaze Hood, Vent & Grill Cleaner, a concentrated, industrial-grade degreaser formulated by Reliable Maintenance Products, a fellow division of The Reliable Group.
Amaze was created with a perfect blend of decades of real-world field knowledge and specialized chemical expertise, delivering the chemical that sets Reliable’s hood and vent cleaning apart from the rest.
