Long Island City's dense commercial corridor demands HVAC systems that perform under pressure without draining your energy budget. Denair HVAC's VFD retrofit services modernize existing equipment with variable frequency drive technology, slashing motor energy consumption by up to 58%, extending equipment lifespan, and bringing your building into compliance with NYC's evolving LL97 sustainability mandates—all without a full system replacement.
Comprehensive VFD retrofit and HVAC modernization solutions for commercial and residential buildings across Long Island City.
Upgrade existing HVAC motors with variable frequency drives to eliminate fixed-speed energy waste. Our certified technicians integrate VFDs into current systems with minimal downtime, delivering immediate energy savings without full equipment replacement.
Modernize outdated equipment with targeted retrofits and expert tuning to optimize performance, enhance comfort, and meet current energy standards. Specialized programs prioritize uptime, redundancy, and compliance for mission-critical facilities.
Integrate smart controls and automated energy management systems alongside VFD retrofits to significantly reduce operational costs and environmental impact across your Long Island City commercial property.
Navigate NYC's Local Law 97 sustainability mandates with confidence. Our VFD retrofit solutions are engineered to reduce your building's carbon footprint and keep you compliant with New York City's evolving emissions requirements.
Protect your VFD and HVAC investment with proactive maintenance plans that extend system lifespan, reduce energy costs, and prevent surprise breakdowns. Free preventive maintenance available for up to 18 months on all new installations.
Certified air testing and balancing services performed after every VFD retrofit installation to verify systems operate at peak efficiency. Detailed certified reports are provided for documentation and compliance purposes.
Our application engineers conduct a thorough on-site assessment of your Long Island City facility, evaluating existing HVAC motors, drives, and control systems. We identify precise energy-saving opportunities and document baseline consumption to establish measurable retrofit goals.
See how Denair HVAC has helped Long Island City and NYC businesses cut energy costs and modernize their systems.
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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!"
"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."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"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!"
"excellent work and quality"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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!"
"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."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"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!"
"excellent work and quality"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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!"
"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."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"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!"
"excellent work and quality"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
Denair HVAC combines 19+ years of New York HVAC expertise with proven VFD retrofit capabilities to deliver measurable savings and lasting results.
Our VFD retrofits reduce HVAC energy consumption by up to 58%, directly lowering utility bills for Long Island City commercial buildings.
All 28 technicians hold OSHA 40-hour, Scaffolding, and major manufacturer certifications, ensuring code-compliant work on every NYC project.
We absorb all unintended cost overruns. Your proposal price is your final price—no surprise invoices after project completion.
Recognized as one of America's fastest-growing companies, Denair HVAC brings nationally acclaimed expertise to every Queens and NYC retrofit job.
Experienced professionals dedicated to delivering exceptional VFD retrofit results.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with a single used truck and a vision to bring affordable, high-quality HVAC services to New York City. Drawing on over 17 years of hands-on HVAC industry experience, he has grown the company from a one-man operation to a $2M+ revenue enterprise recognized by Inc. 5000 as one of America's fastest-growing companies. Dennis leads Denair's strategic direction, championing value engineering and VFD retrofit innovations that help Long Island City and NYC property owners achieve measurable energy savings while maintaining full compliance with local codes and sustainability mandates.
Application Engineer
Ramil is Denair HVAC's Application Engineer, responsible for designing and supporting HVAC systems tailored to each building's unique performance and efficiency requirements. He oversees equipment selection, technical planning for VFD retrofits, and application support to ensure every installation delivers long-lasting reliability and maximum energy savings. Ramil's expertise ensures that every VFD retrofit project in Long Island City and across the NYC metro area is engineered for code compliance, optimal motor performance, and seamless integration with existing building management systems.
Service Manager
Thomas leads Denair HVAC's service operations, overseeing fast response times, efficient scheduling, and consistent service quality across all VFD retrofit and HVAC projects in Long Island City and the greater NYC area. He coordinates field technicians and customer communication to minimize downtime and ensure every retrofit project runs smoothly from initial site visit to final commissioning. Thomas's leadership means clients can expect organized, reliable project execution with clear communication at every stage of the process.
Lead Estimator
Farrukh has been a cornerstone of the Denair HVAC team since 2010, bringing deep expertise in bid proposal preparation for VFD retrofit and commercial HVAC projects across New York City. As Lead Estimator, he is responsible for delivering comprehensive, timely proposals that leverage value engineering to reduce project costs by up to 35%. Farrukh tracks opportunities with vendors, subcontractors, and customers to ensure every Long Island City client receives a competitive, transparent scope with detailed breakdowns and alternates tailored to their budget.
A VFD (Variable Frequency Drive) retrofit involves installing an electronic controller on your existing HVAC motor that adjusts the motor's speed based on actual demand rather than running it at full speed constantly. This eliminates energy waste during partial-load conditions—which represent the majority of operating hours—without requiring full equipment replacement. Our engineers assess your current system and integrate the VFD with existing controls and BMS for seamless operation.
Our certified HVAC engineers are ready to assess your building and answer every question.
Denair HVAC provides VFD retrofit services across Long Island City, all NYC boroughs, and the greater metro area.
11+ Regions
Service Area
24/7 Emergency
Availability
4.7★ Rated
Customer Rating
Contact us to confirm VFD retrofit service availability at your Long Island City or NYC location.
Recognized among America's fastest-growing companies
Full team certified to OSHA 40-hour safety standards
Licensed Mechanical/HVAC Contractor in New York State
Fill out the form below and a Denair HVAC specialist will contact you to schedule a no-obligation site assessment, provide a detailed proposal with fixed pricing, and answer any questions about your Long Island City VFD retrofit project.
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