Exhaust fan cleaning in Cherry Hill, NJ handles the rooftop half of your kitchen ventilation system — the fan that pulls grease-laden air out of the building and off the cooking line. This service is built for restaurants and commercial kitchens whose exhaust fans have collected enough grease to choke airflow, raise fire risk, or draw pests to the roof. As part of a complete restaurant hood cleaning program, it clears the grease load your hood cleaning alone cannot reach.
What Gets Cleaned on the Roof
The rooftop exhaust fan sits at the far end of the duct run and absorbs the full output of every shift. Grease-laden vapor passes through the fan housing on its way out, coating the blades, motor housing, and cabinet walls as it goes. Given enough time, that grease hardens into a residue that chokes airflow and creates a separate ignition point from the hood below. Our cleaning covers the fan blades, the interior of the fan housing, the grease containment tray, and the duct collar connection where it meets the roof curb.
Signs the Fan Needs Attention
A kitchen that has started running hotter than usual, has smoke hanging over the line after cooking stops, or has picked up a grease odor near the back of the building often has a restricted or fouled exhaust fan. Grease visibly overflowing from the fan housing onto the roof surface is a clear sign the containment tray is full and the fan is overdue. Any of these means the fan should be cleaned at the same visit as the hood and duct — not scheduled separately for later.
Why the Fan Gets Skipped
Most operators put their cleaning budget toward the hood because that is what an inspector sees standing on the kitchen floor. The rooftop fan is out of sight, and not every inspection includes a roof walk. But NFPA 96 covers the entire exhaust path, fan included, and a fire that starts at the fan is harder to spot and harder for a suppression system to reach. Skipping the fan leaves a real gap in fire protection even with a spotless hood below it.
Frequently Asked Questions
Is exhaust fan cleaning included in a hood cleaning?
Depends on the scope you book. A hood-only cleaning covers the canopy and baffles but not the rooftop fan. A full-system cleaning covers the hood, duct interior, and rooftop fan in one visit. We recommend booking the full system so the whole exhaust path is clean at once.
How do you access the rooftop fan?
We bring our own ladder and rooftop access equipment. Roof access requirements get confirmed before the visit — hatch, exterior ladder, or a stairwell key. Most Cherry Hill commercial buildings have straightforward roof access we can plan around ahead of time.
What happens if the grease containment tray is overflowing?
An overflowing tray means grease has been pooling on the roof, which creates a slip hazard and attracts pests. We pump out the tray, clean the overflow area, and note the condition in the service report. If the tray is damaged or undersized for your cooking volume, we flag it so you can arrange a repair.
Authoritative Resources
- NFPA 96 — Standard for Ventilation Control and Fire Protection
Governs cleaning requirements for the entire kitchen exhaust system, including rooftop fans.
- NJ Division of Fire Safety
New Jersey fire code enforcement for commercial kitchens and ventilation systems.
- EPA Indoor Air Quality — Commercial Buildings
EPA guidance on maintaining healthy indoor air quality in commercial environments.
