Commercial exhaust fan
repair & service
in Manhattan
when airflow can’t wait

Denair provides 24/7 emergency response across Manhattan with technicians typically on-site within 4 hours of your call. Our fleet is dispatched from Brooklyn and stocked with common motors, belts, and bearings, enabling same-day repair in the majority of cases — critical for kitchen exhaust systems tied to health code compliance.

Yes. We service grease-duty exhaust fans for Manhattan restaurants and commercial kitchens, including motor and drive replacement, damper repair, and the airflow verification that health and fire inspectors look for. We also coordinate with your grease duct cleaning vendor when a fan issue is tied to a buildup or access problem.

LL97 sets carbon emissions limits for NYC buildings over 25,000 sq ft, and inefficient ventilation forces the rest of your HVAC plant to work harder to maintain comfort — increasing energy use and emissions. Failing exhaust fans are often an overlooked contributor to a building's carbon footprint. Denair includes an efficiency assessment with major exhaust fan service for qualifying Manhattan buildings.

Cost depends on fan size, whether it's a motor, belt, bearing, or control issue, and rooftop access requirements. Most repairs are quoted as a fixed price after an on-site diagnostic, so you know the cost before we proceed. Manhattan buildings with multiple exhaust fans typically benefit from a maintenance contract that catches issues before they become emergencies.

Yes — when a unit is beyond economical repair, we handle full replacement including correct sizing, any required DOB filings, rooftop rigging and access logistics, and startup verification. We manage this from single-fan swaps to multi-unit rooftop replacement projects across Manhattan's commercial buildings.