Fan Motor Repair
We diagnose and replace worn or burnt-out exhaust fan motors, restoring full airflow capacity and preventing heat and moisture buildup in your attic or commercial space.
Queens summers bring intense heat and humidity that push rooftop ventilation systems to their limits. When your roof exhaust fan fails, stale air, rising energy costs, and moisture damage follow fast. Denair HVAC's licensed technicians diagnose and repair all makes and models — restoring proper airflow to your home or commercial building with same-day service available.
Comprehensive repair and maintenance solutions for roof exhaust and attic ventilation fan systems in Queens and across NYC.
We diagnose and replace worn or burnt-out exhaust fan motors, restoring full airflow capacity and preventing heat and moisture buildup in your attic or commercial space.
Faulty thermostats and control switches are a leading cause of attic fan failure. Our technicians test, calibrate, and replace thermostat components to ensure your fan activates at the correct temperature.
Worn belts and seized bearings cause loud operation and reduced performance. We inspect, lubricate, and replace these components to extend fan lifespan and minimize noise.
From tripped breakers to wiring faults, our licensed technicians safely trace and resolve all electrical issues that prevent your roof exhaust fan from operating correctly.
Ventilation failures don't keep business hours. Our certified team is on call around the clock to handle urgent roof exhaust fan repairs, typically arriving within 4 hours across Queens.
When repairs are no longer cost-effective, we supply and install energy-efficient replacement exhaust fan units matched to your building's specifications, with up to 10-year manufacturer warranties available.
Contact us and describe your fan issue. We provide a free estimate and schedule a convenient visit. For urgent failures — common during Queens' hot, humid summers — same-day appointments are available, typically within 4 hours.
See how Denair HVAC has restored ventilation and comfort for homeowners and businesses across Queens and NYC.
"Denair is the most dependable HVAC service company in New York!"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
"Denair is professional and courteous."
"excellent work and quality"
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Denair is the most dependable HVAC service company in New York!"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
"Denair is professional and courteous."
"excellent work and quality"
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Denair is the most dependable HVAC service company in New York!"
"I recently used Denair for some repairs to my small two-story office building, and I have to say they are the most honest, hard-working and value focused HVAC provider I have ever experienced! Not only was the price competitive, but more importantly they helped reduce my energy costs from an..."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"Great company, our office was getting hotter by the minute. Denair had a tech on site with in the hour and the ac working perfect in two hours"
"They have the best Engineering Service I have ever seen; they are always available on request and perform the maintenance in the most efficient way. Great Service."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Dennis was always available when I called on him. Never was any additional work generated on any quote/contract awarded. Reliable, expert and a pleasure to work with. A real value!"
"Great reliable HVAC company, a very rare thing to say these days — the pricing is very competitive and the work is reliable. The staff is professional and courteous, they clean up after themselves and always answer. I would recommend them!"
"Denair is professional and courteous."
"excellent work and quality"
"What a great service. I randomly called to get multiple system inspected in my building. They came on time, done a great job and provided a detailed report. I love their transparency."
"I didn't even know about their referral program sending DENAIR to one of my commercial tenants. It was a nice surprise to get paid for referral. Based on the tenant's feedback, the job was well-done. Now it's no brainer to recommend DENAIR to all my tenants"
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
Queens property owners trust Denair HVAC for roof exhaust fan repairs because we combine certified expertise, honest pricing, and rapid response.
We typically arrive within 4 hours anywhere in Queens, minimizing heat and moisture damage from a failed exhaust fan.
All technicians are OSHA-certified, manufacturer-trained, and work under a Registered Mechanical/HVAC Contractor license — fully compliant with NYC code.
You get an upfront, fixed proposal price. No surprise invoices — any unforeseen costs are absorbed by us, not passed on to Queens customers.
Founded in Brooklyn in 2007, Denair HVAC has served Queens, Manhattan, the Bronx, and all NYC boroughs for over 19 years with 400+ completed projects.
The experienced professionals behind every successful roof exhaust fan repair in Queens.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with a single used truck and a drive to deliver honest, high-quality HVAC service to New York. With over 17 years of hands-on industry experience, he has grown the company from a one-man operation into a $2M+ revenue firm recognized by Inc. 5000 as one of America's fastest-growing companies. Dennis leads Denair's strategic vision and sets the standard for the quality and transparency that Queens and NYC clients have come to rely on for every roof exhaust fan repair and HVAC project.
Service Manager
Thomas leads Denair HVAC's service operations, ensuring that every roof exhaust fan repair call in Queens and across NYC is handled with speed, precision, and care. He coordinates technician dispatch, manages scheduling, and maintains direct communication with customers from the first call through job completion. Thomas is the reason Denair consistently meets its same-day service promise — often arriving within 4 hours of a request. His focus on reducing downtime and delivering a seamless service experience makes him an invaluable resource for Queens homeowners and property managers alike.
Application Engineer
Ramil designs and supports HVAC and ventilation systems tailored to each building's unique performance and efficiency requirements across New York's diverse building stock — from Queens row houses to large commercial rooftops. He oversees equipment selection, technical planning, and application support to ensure every repair and replacement delivers lasting reliability, energy savings, and full compliance with NYC building codes. For roof exhaust fan repairs, Ramil ensures the replacement or repaired unit is properly matched to the building's ventilation load, preventing repeat failures.
Attic or roof exhaust fan repair costs in Queens typically range from $150 to $600, depending on the component needing repair — motor replacements tend to be higher, while thermostat or wiring fixes are often less. A full unit replacement runs $300–$900+ including labor. Denair HVAC provides a free, fixed-price estimate before any work begins so there are no surprises.
Speak directly with a licensed Denair HVAC technician for a free consultation and same-day estimate.
Denair HVAC provides roof exhaust fan repair services across Queens and all New York City boroughs and surrounding counties.
11 Regions
Service Area
Within 4 Hours
Response Time
24/7 Available
Emergency Service
Contact us to confirm coverage and schedule a same-day roof exhaust fan repair visit.
Named one of America's fastest-growing companies in 2019.
All technicians hold OSHA 40-hour safety certification for rooftop work.
Licensed HVAC contractor fully compliant with NYC mechanical codes.
Fill out the form below and a Denair HVAC specialist will contact you promptly to confirm your appointment and provide a free, no-obligation estimate. Same-day service is available across Queens and all NYC boroughs.
For immediate assistance, feel free to give us a direct call at 718-791-5074 You can also send us a quick email at
For immediate assistance, feel free to give us a direct call at 718-791-5074 You can also send us a quick email at