Motor Repair & Replacement
When your exhaust fan motor burns out or runs noisily, our technicians diagnose the issue and replace worn motors with compatible, high-performance units to restore full suction and quiet operation.
Long Island kitchens face year-round demands — from humid summers to heavy holiday cooking sessions that push exhaust fans to their limits. Denair HVAC's certified technicians diagnose and repair kitchen exhaust fan issues fast, restoring proper ventilation, eliminating odors, and keeping your kitchen safe. Free estimates available. Serving Nassau, Suffolk, and surrounding communities.
From motor failures to clogged ducts, we handle every exhaust fan issue to keep your kitchen properly ventilated.
When your exhaust fan motor burns out or runs noisily, our technicians diagnose the issue and replace worn motors with compatible, high-performance units to restore full suction and quiet operation.
Bent, broken, or unbalanced fan blades reduce airflow efficiency and cause vibration. We inspect, realign, or replace blade assemblies to ensure smooth, effective ventilation after every repair.
Grease buildup in exhaust ducts is a serious fire hazard in Long Island kitchens. Our team performs thorough duct cleaning and airflow inspections to clear blockages and restore safe ventilation.
Faulty wiring, blown capacitors, or tripped connections can silently disable your exhaust fan. Our licensed technicians safely trace and repair all electrical faults in exhaust fan systems.
Clogged grease filters choke airflow and create fire risks. We remove, clean, or replace filters and grease traps to maintain peak fan performance and kitchen safety year-round.
Our comprehensive tune-up service covers lubrication, belt tension checks, airflow testing, and component inspection — keeping your kitchen exhaust system running efficiently and reliably for the long term.
Long Island's coastal humidity and busy cooking seasons put extraordinary strain on kitchen exhaust systems. When airflow weakens or a fan fails entirely, heat, grease, and odors accumulate fast. Denair HVAC's certified technicians bring 19+ years of mechanical expertise to every repair — diagnosing root causes, not just symptoms. We offer free estimates, same-day service in most cases, and repairs backed by quality guarantees, so your kitchen stays safe, comfortable, and code-compliant.
See how Long Island homeowners and property managers restored kitchen ventilation with Denair HVAC.
"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..."
"Denair is the most dependable HVAC service company in New York!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"excellent work and quality"
"Denair is professional and courteous."
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"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..."
"Denair is the most dependable HVAC service company in New York!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"excellent work and quality"
"Denair is professional and courteous."
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"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..."
"Denair is the most dependable HVAC service company in New York!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"excellent work and quality"
"Denair is professional and courteous."
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
Here's what sets our kitchen exhaust fan repair service apart from the competition across Long Island.
Our OSHA-certified, manufacturer-trained technicians meet all New York mechanical contractor licensing requirements.
We typically arrive within 4 hours of your call — minimizing kitchen downtime across Long Island and Nassau County.
Every kitchen exhaust fan repair starts with a transparent, no-obligation estimate so you know exactly what to expect.
We back every repair with a quality guarantee — if our work doesn't meet code, we refund your money. No exceptions.
Experienced professionals committed to fast, reliable HVAC service across Long Island.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with a single used truck and a determination to deliver honest, affordable HVAC service to New York-area customers. Over the past 19+ years, he has grown the company from a one-man operation into a recognized leader in mechanical contracting, reaching $2 million in revenue within just five years. With over 17 years of hands-on HVAC expertise spanning residential repairs to large commercial installations, Dennis sets the strategic vision that drives Denair's culture of quality, transparency, and client satisfaction. His leadership earned Denair recognition as one of America's fastest-growing companies by Inc. 5000 in 2019.
Service Manager
Thomas leads Denair HVAC's service operations with a relentless focus on speed, efficiency, and customer satisfaction. He coordinates field technicians and manages scheduling to ensure that Long Island and New York Metro customers receive fast response times — often within four hours of their initial call. Thomas oversees every stage of the service workflow, from initial dispatch to job completion, maintaining consistent quality control and clear communication throughout. His operational discipline keeps systems running reliably and minimizes downtime for residential and commercial clients alike, making him central to Denair's reputation for dependable same-day exhaust fan and HVAC repair service.
Application Engineer
Ramil designs and supports HVAC systems tailored to each building's specific performance and efficiency requirements. As Denair's Application Engineer, he oversees equipment selection, technical planning, and application support to ensure that every repair and installation delivers long-lasting reliability, measurable energy savings, and full compliance with New York building codes. For kitchen exhaust fan repairs in Long Island, Ramil's engineering expertise ensures that replacement components and system configurations are properly matched to the demands of each kitchen's layout, cooking volume, and local ventilation code requirements — providing solutions that stand the test of time.
The most common reasons a kitchen exhaust fan loses suction include a clogged grease filter, a worn or failed motor, bent or blocked fan blades, or an obstructed duct run. In Long Island homes, coastal humidity can accelerate grease buildup and motor corrosion. A technician will inspect the full system — from the fan housing to the exterior vent — to identify and fix the root cause.
Our certified HVAC experts are ready to help — get a free consultation today.
Denair HVAC serves homeowners and businesses across Long Island and the greater New York Metro Area.
11+ Counties
Service Area
Within 4 Hours
Response Time
4.7★ Rated
Customer Rating
Contact us to confirm coverage and schedule a same-day visit near you.
Recognized as one of America's fastest-growing companies.
Technicians certified to the highest workplace safety standards.
Fully licensed mechanical and HVAC contractor in New York State.
Fill out the form below and a Denair HVAC specialist will contact you promptly to confirm your appointment, provide a free estimate, and answer any questions about your kitchen ventilation system.
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