A commercial kitchen exhaust inspection should follow the full route taken by grease-laden vapours: from the hood and filters through the plenum and ductwork to the exhaust fan. The purpose is to identify visible grease accumulation, damaged or inaccessible components, operating symptoms, and documentation gaps before they become larger maintenance or safety problems.
Ontario’s Fire Code requires commercial cooking exhaust and fire-protection systems to be maintained in accordance with NFPA 96. It also describes the exhaust pathway as including a hood or primary collection device, grease filtration or extraction, and ductwork. Use the kitchen exhaust system inspection requirements to review the broader questions of scope, cadence, access, and records, but remember that a private checklist does not replace an authority’s inspection or approval.
Quick summary
- Inspect seven areas: the hood and plenum, filters and grease controls, ducts and access panels, exhaust fan and belts, airflow symptoms, surrounding fire-safety conditions, and documentation.
- Staff can usually record visible conditions and operating symptoms. They should not enter ducts, approach unsafe rooftop equipment, dismantle electrical components, or approve fire-suppression systems.
- Classify each finding as monitor, clean, repair, replace, or escalate to a qualified trade or the applicable authority.
- Keep dated photographs, service records, tags, deficiency notes, and close-out evidence together, while separating cleaning records from official approvals.
How to use this commercial kitchen exhaust inspection checklist
Start with the equipment shut down where appropriate, allow hot surfaces to cool, and use the personal protective equipment and access controls required by your workplace procedures. A kitchen manager can document visible grease, damaged filters, unusual sounds, odours, and access problems. More involved work, including internal duct inspection, rooftop access, belt adjustment, electrical work, and mechanical repairs, should be assigned to qualified personnel.
Before an audit or service visit, prepare for an Ontario commercial kitchen inspection by identifying which authority or organization is involved. Fire, public health, building, licensing, occupational-safety, and insurer reviews may have different scopes and records.
| Inspection area | What to look for | Typical next action |
|---|---|---|
| Hood and plenum | Grease, drips, damaged surfaces, blocked access | Clean, repair, or arrange professional assessment |
| Filters and grease controls | Incorrect seating, saturation, damage, full cups or troughs | Clean, exchange, replace, or investigate airflow |
| Ducts and access panels | Grease staining, leaks, missing panels, unsafe access | Escalate for qualified cleaning or repair |
| Exhaust fan and belts | Noise, vibration, visible grease, worn belts, damaged guards | Stop unsafe operation and arrange maintenance |
| Airflow and operation | Smoke escape, odour, condensation, weak capture | Document conditions and investigate the system |
| Surrounding fire safety | Combustible deposits, clearance or access concerns, missing instructions | Correct housekeeping issues or contact the relevant professional |
| Records and corrective action | Missing tags, photos, reports, owners, or completion evidence | Complete the record and close deficiencies |
1. Hood and plenum condition
Inspect the hood interior, grease collection points, corners, seams, baffles, lighting covers, and visible portions of the plenum. Look for sticky or hardened grease, active drips, heavy staining, loose components, damaged seals, and openings that make the system difficult to clean.
A light film addressed through the planned cleaning routine is different from thick buildup, recurring drips, or grease appearing outside the intended collection path. Those conditions may indicate that the hood needs professional degreasing or that another part of the exhaust system requires investigation.
Check whether panels, doors, and other components are mechanically secure and accessible for cleaning and maintenance. Ontario Regulation 640 states that commercial cooking exhaust and fire-protection systems are maintained according to manufacturer recommendations and that equipment must be mechanically secure and accessible. Record the exact location of each issue rather than writing only “hood dirty.”
2. Filters and grease controls
Confirm that each filter is the correct type for the hood, sits securely in its track, and is free from obvious warping, holes, bent frames, heavy saturation, or missing sections. Check grease cups, troughs, drain points, and collection containers for overflow, blockage, loose fittings, or visible drips onto the cooking line.
Do not assume that a filter only needs cleaning because it looks dirty. A damaged or distorted filter may need exchange or replacement, while a filter that quickly becomes saturated after cleaning may point to high grease loading, poor fit, airflow problems, or an overdue system cleaning. The appropriate response depends on its condition, manufacturer guidance, cooking volume, and the rest of the exhaust pathway.
Staff should use safe handling procedures when removing filters. Do not scrape or wash components over food-preparation surfaces, and do not operate the hood with filters missing unless qualified personnel and applicable equipment instructions specifically permit it. Robinhood Cleaners identifies filter cleaning and exchange as part of its commercial kitchen service offering.
3. Ducts and access panels
Where the duct is visible, check for grease staining, leaking seams, damaged insulation or exterior surfaces, unusual odour, and evidence that grease is escaping from joints or access openings. Confirm that access panels are present, closed, labelled where appropriate, and not blocked by stored items or building obstructions.
Do not enter ductwork or remove access panels if doing so would expose staff to unsafe heights, hot equipment, sharp edges, electrical hazards, or contaminated surfaces. A visual check from a safe position can identify an access problem, but it cannot establish the internal cleanliness of the entire duct.
Missing or inaccessible panels should not simply be recorded as a housekeeping issue. Photograph the location, describe the access limitation, and arrange qualified service or repair. The same applies to visible grease accumulation inside accessible sections: document it and schedule appropriate cleaning rather than attempting an improvised internal clean.
4. Exhaust fan, hinge, and belt condition
Observe the exhaust fan during normal operation only from a safe location. Note unusual rattling, grinding, vibration, delayed starting, visible grease, excessive movement, damaged guards, or a fan that appears not to be exhausting effectively. If the fan is on a roof or elevated platform, follow the site’s access and fall-protection requirements.
Where a belt is visible without opening a guard or entering an unsafe area, look for obvious fraying, cracking, slackness, or oil contamination. Do not reach toward moving parts or attempt tension adjustments as part of a routine staff inspection. A worn belt, unstable fan, or damaged guard requires qualified mechanical attention. Robinhood Cleaners lists fan belt replacement and exhaust fan cleaning among its services, but a cleaning provider is not automatically the correct trade for every electrical, structural, or mechanical fault.
Record whether the issue occurs at startup, during peak cooking, or continuously. That detail helps a service professional distinguish a recurring mechanical problem from a symptom caused by filters, duct restriction, or another ventilation condition.
5. Airflow and visible operating issues
During representative cooking conditions, observe whether smoke is captured consistently by the hood. Also record persistent cooking odour outside the kitchen, condensation, smoke spilling toward staff, weak draw, rattling, repeated nuisance alarms, or grease deposits that return unusually quickly after cleaning.
These symptoms are useful evidence, but they do not identify one certain cause. Poor capture may relate to blocked or incorrectly seated filters, a fan or belt problem, duct restriction, make-up air, changing cooking loads, nearby doors, or broader ventilation design. Avoid fixing the symptom by removing filters or making unauthorized fan adjustments.
Use a simple operating note: date, cooking equipment in use, fan status, filter condition, doors or windows open, weather if relevant, and the exact symptom observed. This gives a qualified service provider a better starting point than a general complaint such as “the hood is weak.”
6. Surrounding fire-safety conditions
An exhaust inspection should include the immediate area around the system, but it is not the same as a complete fire-safety or suppression-system inspection. Look for combustible storage close to heat-producing equipment, grease deposits on nearby surfaces, blocked access, damaged components, and visible conditions that could interfere with safe servicing.
Check whether operating instructions that your fire-safety plan or equipment documentation requires to be posted remain visible and legible. Ontario Regulation 640 addresses posted instructions for manually operating fire-extinguishing installations as part of the fire-safety plan, as well as mechanical security and maintenance access. Do not remove, test, reset, or certify suppression equipment unless that work is assigned to the appropriately qualified professional.
If you find a serious or immediate hazard, protect people first, follow the site’s emergency procedures, and contact the responsible qualified trade or authority. A hood-cleaning record cannot by itself prove that a suppression system, electrical installation, building condition, or overall kitchen operation has been approved.
7. Documentation and corrective action
A checklist is valuable only when it leads to a traceable decision. For every finding, record the inspection date, person completing the check, equipment or location, operating conditions, description of the issue, photographs, urgency, assigned owner, service request number, completion date, and follow-up evidence.
Use action categories consistently:
- Monitor: the condition is recorded and checked again at a defined review point, with no immediate hazard identified.
- Clean: grease or soil is present, but the component remains suitable for cleaning under the applicable procedure.
- Repair: a belt, guard, seal, access panel, mounting point, or other component is damaged or not functioning properly.
- Replace: a filter or component is distorted, failed, missing, or no longer suitable for service.
- Escalate: the issue involves an immediate hazard, suppression equipment, electrical or structural work, an authority question, or a condition staff cannot safely assess.
Keep the original observation and close-out record together. A completed invoice may show that a service occurred, but it should not be rewritten as proof of authority approval. For a broader view of inspection records and cadence, review the inspection documentation requirements alongside the authority’s current instructions.
Prepare the inspection file before an audit or service visit
First identify the reason for the visit and the organization responsible for it. A fire review may focus on exhaust and fire-protection conditions, while a public-health inspection may address food handling, sanitation, temperatures, and pest control. Building, licensing, occupational-safety, and insurer reviews may have different requirements.
Gather recent cleaning reports, service tags, photographs, equipment or manufacturer instructions, open deficiency notes, repair invoices, and correspondence from the authority or insurer. Do not create records retroactively or claim that an unresolved issue is complete. Instead, show the finding, assigned action, appointment or work order, and evidence available so far.
Frequently asked questions
Is a commercial kitchen exhaust inspection the same as hood cleaning?
No. Hood cleaning removes grease and soil from specified components, while an inspection reviews condition, access, operation, damage, records, and follow-up needs across the exhaust pathway. Cleaning may be one corrective action identified by an inspection, but it does not automatically assess every mechanical, electrical, structural, or suppression issue.
Can restaurant staff complete this exhaust inspection checklist themselves?
Staff can usually document safe, visible conditions and operating symptoms if they are trained and follow site procedures. They should not enter ducts, access unsafe rooftops, approach moving equipment, dismantle guards, alter electrical or mechanical components, or certify compliance. Escalate anything that cannot be assessed safely.
What should I do if I find grease inside the duct or around the exhaust fan?
Photograph the condition from a safe position, record its location, and arrange qualified cleaning or maintenance. Do not enter the duct or reach around a running fan. If the buildup presents an immediate hazard or the equipment is unsafe to operate, follow emergency procedures and contact the responsible professional or authority.
Does completing this checklist prove compliance with Ontario Fire Code requirements?
No. It creates a useful internal record and helps identify issues, but it does not replace current authority requirements, manufacturer instructions, qualified service, or an official inspection. The authority having jurisdiction determines questions within its mandate.
Which records should a restaurant keep after exhaust cleaning or maintenance?
Keep dated service reports, tags, photographs, invoices, identified deficiencies, repair or replacement details, assigned actions, and close-out evidence. Also retain correspondence that defines the inspection scope. Keep cleaning records distinct from certificates or approvals issued by other professionals or authorities.
Conclusion: Use the checklist to decide the next safe step
The strongest commercial kitchen exhaust inspection checklist follows the system from hood to fan, records what was actually observed, distinguishes visible maintenance needs from unsafe or specialized work, and assigns a clear next action. Use the seven areas routinely, then update the inspection file when cleaning, repair, replacement, or follow-up is completed.
For Ontario operators, confirm authority-specific questions with the applicable authority and use qualified trades for work beyond a safe visual review. Robinhood Cleaners provides kitchen exhaust cleaning, filter cleaning and exchange, fan belt replacement, duct cleaning, grease trap service, and commercial appliance cleaning for commercial kitchens across Ontario. Visit Robinhood Cleaners to review available services and request information about your cleaning or maintenance needs.