What Fire Marshals Actually Look for During an Inspection

Fire marshals are not adversaries. They are professionals doing a job that directly protects lives and property. Understanding what they look for during a kitchen exhaust system inspection helps you — the hood cleaning company — deliver work that passes inspection and helps your clients stay in compliance. It also builds a professional relationship with your local fire authority that benefits everyone.

Here is what fire marshals actually inspect, and what determines whether a system passes or fails.

Cleaning Frequency Documentation

This is often the first thing a fire marshal checks. They want to see records that demonstrate the kitchen exhaust system is being cleaned at the frequency appropriate for the cooking type, as defined by NFPA 96 Table 12.4.

They are looking for specific things:

• Date of last cleaning: When was the system last serviced? Is it within the required frequency interval?
• Cleaning company identification: Who performed the work? Are they a legitimate, qualified cleaning company?
• Frequency appropriateness: If the kitchen has a charbroiler running 16 hours a day and the cleaning records show semi-annual service, that is a red flag — regardless of how clean the system looks today.
• Consistency: Is there a pattern of regular cleanings, or are there gaps in the record?

A service sticker on the hood canopy is the minimum — and increasingly, it is not enough. Fire marshals in many jurisdictions are asking for actual service reports: detailed documentation that includes the scope of work, the condition of the system, and verification that the cleaning was performed to standard. A sticker tells them someone was on site. A service report tells them what was done.

Visual Grease Accumulation

The fire marshal will visually inspect accessible surfaces of the kitchen exhaust system for grease accumulation. They are checking the hood interior, filters, the lower portion of the ductwork (if visible), and the area around the fan.

NFPA 96 does not specify a maximum grease depth in numeric terms for routine inspections — the standard is that the system should be "clean" in the context of its required cleaning frequency. But practically, fire marshals are trained to recognize excessive grease buildup, and they know what a properly cleaned system looks like versus one that has been neglected.

Key areas they check:

• Hood canopy interior: Grease buildup on the interior surfaces of the canopy, particularly in corners and seams.
• Filters: Are the filters present, properly seated, and reasonably clean? Missing or heavily caked filters are an immediate concern.
• Visible ductwork: Where ductwork is exposed or accessible via access panels, the fire marshal may look inside for grease accumulation.
• Fan and hinge kit: The exhaust fan and its housing are checked for grease buildup and proper operation. Is the hinge kit functional? Is grease pooling on the roof around the fan?

Access Panels

Access panels are a critical component that fire marshals pay close attention to. NFPA 96 requires access panels at specific intervals in the ductwork to allow for cleaning and inspection. Fire marshals check for:

• Presence: Are access panels installed where required? Missing panels indicate that portions of the ductwork cannot be cleaned or inspected.
• Accessibility: Can the panels be opened? Panels that are screwed shut, painted over, or blocked by equipment are a problem — they suggest that the ductwork behind them is not being cleaned.
• Condition: Are the panels properly sealed when closed? Are the gaskets intact? Leaking access panels allow grease-laden vapors to escape into concealed spaces, creating a fire hazard in areas that are not monitored.

For KEC companies, access panels should be part of every job assessment. If panels are missing, sealed, or inaccessible, document it, notify the client in writing, and note it on the service report. If you cannot access a section of ductwork, you cannot clean it — and your documentation should clearly reflect what was and was not cleaned.

Fire Suppression System

While the fire suppression system (typically a wet chemical system) is not the hood cleaner's direct responsibility, fire marshals inspect it as part of the overall kitchen exhaust system review. They check:

• Current inspection tag: Has the fire suppression system been inspected and serviced by a qualified company within the required interval (typically semi-annually)?
• Nozzle alignment: Are the suppression nozzles properly aimed at the cooking surfaces? Hood cleaning should never move or obstruct nozzles — if your crew accidentally displaces a nozzle during cleaning and does not reset it, the suppression system may not perform correctly.
• Manual pull station: Is it accessible and clearly marked?
• Fusible links: Are they present, properly installed, and not caked with grease?

KEC companies should know enough about fire suppression systems to avoid disturbing them during cleaning and to flag obvious issues to the client. You are not the suppression contractor, but you are a second set of eyes on a critical safety system.

Clearance and Installation Issues

Fire marshals also check for installation and clearance issues that affect fire safety:

• Clearance to combustibles: Is there adequate clearance between the exhaust system and combustible materials (wood framing, ceiling tiles, etc.)?
• Grease drip rails and troughs: Are they present, properly installed, and functional? Grease should be directed to a collection point, not dripping onto cooking surfaces or the floor.
• Exhaust fan operation: Is the fan running properly? Adequate airflow is essential for the system to function as designed.

These are not items that the hood cleaner installs or repairs, but they are items you should observe and document. If you notice a clearance violation or a non-functioning drip rail, noting it in your service report protects your client and demonstrates your professionalism to the fire authority.

How KEC Companies Can Set Their Clients Up for Success

The best thing you can do for your clients is make the fire marshal's job easy. When the marshal arrives and the kitchen operator can immediately produce a current, detailed service report — with photos, dates, technician identification, and frequency documentation — the inspection starts on a positive note. The system shows that the operator takes fire safety seriously, and that their hood cleaning company is professional and thorough.

Practically, this means:

• Provide your clients with copies of every service report — ideally in a format they can access on demand, not just a paper form they will lose.
• Include enough detail that the report answers the fire marshal's questions before they are asked: date, scope, condition, frequency, technician, photos.
• Note deficiencies clearly. If access panels are missing, if the fan is not operating correctly, if the fire suppression tag is expired — document it and notify the client. This protects them, protects you, and gives the fire marshal confidence that the system is being monitored by a qualified professional.
• Be consistent. A single great report means less than a year of consistent reports that show regular, professional maintenance.

HoodOps generates this documentation automatically as part of the cleaning workflow. But regardless of your tools, the principle is the same: thorough documentation is not overhead. It is the product. The cleaning is what you do. The documentation is what proves you did it.

For more on fire safety requirements and hood cleaning compliance standards, visit the hood cleaning fire safety guide on Stovio.