Brooklyn's dense residential towers, mixed-use developments, and century-old brownstones demand climate control that adapts to every layout. Denair HVAC delivers expert VRF service and maintenance across NYC—keeping your Variable Refrigerant Flow system running at peak efficiency, reducing energy costs, and preventing costly breakdowns before they disrupt your tenants or operations.
Comprehensive VRF and split system solutions—from routine maintenance to emergency repairs and energy-smart upgrades.
Proactive maintenance plans designed to extend VRF system lifespan, maximize efficiency, and prevent surprise breakdowns. Includes annual contracts, customized schedules, and free maintenance for up to 18 months on new installations.
Round-the-clock certified technicians respond to urgent VRF failures—typically within 4 hours. Trained and certified by major manufacturers, they arrive fully equipped to restore comfort and operations with minimal disruption.
Modernize aging VRF equipment with targeted retrofits and expert tuning. Optimize performance, enhance comfort, and meet current NYC energy standards without the cost of a full system replacement.
Full turnkey VRF and split system installation for properties with rooftop or balcony access. Ideal for Brooklyn's mixed-use and multi-family buildings seeking zone-by-zone climate control without central ductwork.
Smart controls and automation solutions integrated with your VRF system to significantly cut energy costs, reduce environmental impact, and support NYC's Local Law 97 sustainability compliance requirements.
Certified air test and balancing services performed after VRF installations or major repairs to ensure every zone operates at peak performance with documented, certified reports provided upon completion.
Contact Denair HVAC by phone or online. We offer flexible scheduling Monday through Friday to accommodate Brooklyn property managers, building owners, and facilities teams without disrupting tenant operations.
See how Brooklyn and NYC property owners rely on Denair HVAC for dependable VRF service.
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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"
"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 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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"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!"
"excellent work and quality"
"Denair is professional and courteous."
"Impeccable install. You can tell they're pros the moment they walk in."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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"
"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 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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"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!"
"excellent work and quality"
"Denair is professional and courteous."
"Impeccable install. You can tell they're pros the moment they walk in."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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."
"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"
"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 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!"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"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!"
"excellent work and quality"
"Denair is professional and courteous."
"Impeccable install. You can tell they're pros the moment they walk in."
Brooklyn and NYC property owners trust Denair HVAC for VRF service backed by certified expertise, transparent pricing, and a proven track record.
Technicians are trained and certified by major VRF manufacturers, ensuring code-compliant service across Brooklyn and all NYC boroughs.
24/7 emergency availability with typical on-site response within 4 hours—critical for Brooklyn's high-density residential and commercial buildings.
Fixed proposal pricing means no surprise costs. Unintended expenses are covered at our expense—a guarantee that sets us apart in the NYC HVAC market.
Founded in Brooklyn in 2007, Denair HVAC has served NYC properties for over 19 years, completing 400+ projects with deep local market knowledge.
Experienced professionals dedicated to keeping your VRF systems running perfectly.
Founder & CEO
Dennis founded Denair HVAC in March 2007, starting with just one man and a beat-up used truck in Brooklyn. With over 17 years of hands-on experience across all aspects of the HVAC industry—including VRF systems, commercial installations, and service operations—he built the company from the ground up to $2 million in revenue within five years. Under his strategic leadership, Denair was recognized by Inc. 5000 as one of America's fastest-growing companies in 2019. Dennis's commitment to honesty, transparency, and delivering real value to NYC property owners continues to drive the company's growth and reputation across Brooklyn and the broader metro area.
Service Manager
Thomas leads Denair HVAC's service operations, ensuring fast response times, efficient scheduling, and consistent service quality across Brooklyn and all NYC service areas. He coordinates field technicians and customer communication to keep VRF and HVAC systems running reliably, minimize downtime, and deliver a seamless service experience from the first call to final sign-off. Thomas is the operational backbone behind Denair's reputation for same-day responsiveness and high client satisfaction, ensuring every service visit—whether routine VRF maintenance or an emergency repair call—meets the company's strict quality standards.
Application Engineer
Ramil designs and supports HVAC and VRF systems tailored to each Brooklyn and NYC building's unique performance and efficiency requirements. He oversees equipment selection, technical planning, and application support to ensure long-lasting reliability, meaningful energy savings, and full compliance with NYC codes including Local Law 97 mandates. Ramil's engineering expertise is especially valuable for complex VRF multi-zone projects in mixed-use and multi-family properties across Brooklyn's diverse building stock—from pre-war brownstones to modern high-rises—where precise system design makes all the difference.
Lead Estimator
Farrukh has been an integral part of Denair HVAC since 2010, bringing deep expertise in HVAC bid preparation and project cost analysis. As Lead Estimator, he is responsible for preparing comprehensive, timely bid proposals for VRF service and maintenance projects, tracking opportunities with vendors, subcontractors, and customers across NYC. His meticulous approach to value engineering has helped Brooklyn and NYC property owners save significantly on their HVAC budgets—optimizing proposals by up to 35% by identifying equal-performance equipment alternatives without compromising quality or compliance.
VRF stands for Variable Refrigerant Flow. It refers to a type of HVAC system that uses refrigerant as the cooling and heating medium, distributed to multiple indoor units from one or more outdoor condensing units. The system modulates the flow of refrigerant to precisely match the heating or cooling demand of each zone, making it highly energy-efficient compared to traditional central HVAC systems.
Talk to a certified Denair HVAC expert for a free consultation tailored to your Brooklyn property.
Denair HVAC provides VRF service and maintenance across Brooklyn and the entire New York Metropolitan Area.
11 Regions
Service Area
24/7
Emergency Availability
4.7★ Rated
Google Rating
Contact us to confirm coverage and schedule your VRF service appointment today.
Recognized as one of America's fastest-growing companies.
Technicians meet rigorous federal occupational safety standards.
Fully licensed mechanical contractor operating across New York.
Fill out the form below and a Denair HVAC specialist will reach out to discuss your VRF service or maintenance needs, provide a free estimate, and schedule a convenient appointment.
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