Rooftop kitchen exhaust fans carry the heaviest, most fire-prone grease load in your entire hood system. We degrease the housing, blades, and motor compartment to bare metal and document it to NFPA 96 standards — the same code enforced by the Peoria Fire Marshal.
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Most Peoria restaurant owners think of "hood cleaning" as one job, but the exhaust fan bolted to your roof is a separate, higher-risk piece of equipment that deserves its own attention. Grease-laden air travels up through the hood, past the filters, through the ductwork, and finally through the fan — and by the time it gets there, a meaningful share of that grease has condensed on the fan blades, inside the housing, and around the motor compartment. Because the fan sits outside, exposed to weather and running hot for hours a day, grease there tends to bake on harder than anywhere else in the system.
A cleaning crew that only wipes down the hood canopy and skips the roof has left the single most combustible component of your exhaust system untouched. NFPA 96, the national fire code for commercial kitchen ventilation, explicitly requires the exhaust fan to be cleaned to bare metal along with the hood, ductwork, and filters — not treated as an optional extra.
Our technicians access the fan from the roof using the unit's hinge kit, which lets us tip the entire fan housing up without disconnecting ductwork or damaging the roof membrane. From there we hand-scrape and pressure-wash the blades and housing interior, clean the grease containment tray beneath the fan, and carefully degrease around the motor shroud without exposing the motor or wiring to direct water. We also check belt tension on belt-drive fans, inspect mounting hardware, and confirm the hinge kit itself is operating safely — a detail that's easy to overlook but matters every time a technician needs roof access again.
Every step is photographed. You get before-and-after images of the fan specifically, not just the visible hood interior, because that's the documentation the Peoria Fire Marshal's office and your insurance carrier will ask for if the exhaust fan is ever called out during an inspection.
Exhaust fan cleaning follows the same NFPA 96 frequency schedule as the rest of your hood system, and it's driven by cooking volume rather than the calendar. Solid-fuel cooking, wok stations, and 24-hour operations typically need monthly service. Charbroilers, pizza ovens, and high-production fryers — common across downtown Peoria and the riverfront dining corridor — usually land on a quarterly cleaning cadence, which is the schedule we recommend most often for high-volume Peoria kitchens. Full-service restaurants with moderate volume can often stretch to every six months, and low-volume operations like church kitchens or seasonal concessions are typically annual.
If your fan hasn't been serviced separately from a general hood cleaning in the last year, or if you're not sure when it was last done, that's worth a call before your next fire inspection rather than after.
Illinois follows NFPA 96 as the governing standard for commercial kitchen ventilation, and the City of Peoria enforces it through the Fire Marshal's office alongside the Peoria Health Department. Because the exhaust fan is the component most exposed to weather and hardest to inspect visually from the ground, it's frequently the item flagged during a walkthrough. A documented, dated fan cleaning is one of the simplest ways to remove that risk before an inspector ever asks about it.
A few warning signs tend to show up before a full inspection ever catches the problem. Reduced airflow in the kitchen — smoke or heat lingering longer than it used to — often points to a fan blocked with grease buildup rather than a mechanical failure. Visible grease dripping down the outside of the fan housing or staining the roof beneath it is a clear signal that containment has been overwhelmed. Unusual noise from the motor or belt, or a fan that seems to be running but moving less air than before, can also indicate grease has thrown the blades out of balance. Any of these is worth a call rather than waiting for the next scheduled cleaning.
Restaurants near Bradley University and along the riverfront entertainment district tend to run heavier fryer and grill volume during peak seasons, which speeds up how quickly these symptoms appear. If your kitchen has picked up volume recently, it's worth moving up your fan service rather than sticking to last year's schedule.
Not every rooftop exhaust fan is built the same way, and the cleaning approach differs slightly depending on which type your kitchen has. Belt-drive fans use a separate motor connected to the fan wheel by a belt, which means our technicians check belt tension and wear as part of every cleaning, since a grease-soaked belt can slip or fail faster than a clean one. Direct-drive fans have the motor mounted right on the fan shaft, which simplifies the mechanical side but means we have to be more careful about how close we work to the motor housing during degreasing. Older buildings in downtown Peoria and along the riverfront often still run belt-drive units installed years ago, while newer builds and remodeled kitchens tend to have direct-drive fans. Either way, our technicians are trained on both, and we'll tell you which type you have and what condition it's in as part of every visit.
Skipping fan service doesn't just create a compliance gap — it creates a compounding problem. Grease that isn't removed regularly hardens over time, making each subsequent cleaning longer, more labor-intensive, and more expensive than it would have been on schedule. Beyond cost, a heavily grease-loaded fan is a genuine fire risk: it's sitting outside, running hot, coated in a flammable substance, often for hours every single day your kitchen operates. If a fire marshal's inspection catches a fan that clearly hasn't been serviced in a long time, it tends to draw closer scrutiny of the rest of your exhaust system too, since inspectors reasonably assume neglect in one area often means neglect elsewhere. Staying current on fan cleaning is one of the simplest ways to keep an inspection focused and short rather than turning into a longer walkthrough.
We work around your hours, cleaning fans late at night, early in the morning, or on weekends so your kitchen never has to close for service. Every technician is licensed, insured, and background-checked, and every job includes flat-rate pricing agreed before we start — no surprise charges once the fan is opened up. Because fan service is included with our standard hood cleaning visits, Peoria restaurants get a single appointment that covers the hood, filters, ductwork, and rooftop fan together, all documented on one compliance report.
Exhaust fan service is one part of a fully compliant hood system. Here's what else we cover.
Baffle and mesh filter cleaning, degreasing, and exchange service for Peoria kitchens.
View filter service →Grease containment system service and roof remediation for overflow and runoff issues.
View containment service →Inspections, certification reports, and fire-code compliance documentation.
View compliance service →See our complete restaurant hood & exhaust cleaning services in Peoria, IL.
Back to all services →Straight answers to what Peoria restaurant owners ask us about fan service. Don't see your question? Just call.
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