HVAC Installation
Turnkey commercial HVAC installation with end-to-end project management. Covers equipment, ductwork, piping, controls, and commissioning — saving clients up to 35% through value engineering on projects from $10K to $5M.
Queens businesses demand climate control that never skips a beat — from Flushing's dense retail corridors to Long Island City's converted office towers. Denair HVAC delivers turnkey commercial HVAC installation, repair, preventive maintenance, and energy management backed by 19+ years of New York experience, value-engineered pricing, and a guarantee that 80% of projects finish ahead of schedule.
Comprehensive commercial HVAC solutions for Queens businesses — from new installations and system upgrades to 24/7 emergency repairs and energy compliance.
Turnkey commercial HVAC installation with end-to-end project management. Covers equipment, ductwork, piping, controls, and commissioning — saving clients up to 35% through value engineering on projects from $10K to $5M.
Certified technicians on call around the clock, responding to urgent HVAC failures typically within 4 hours. Handles all major brands from 1/2 to 100 tons — minimizing Queens business downtime in any season.
Proactive maintenance plans that extend equipment lifespan, reduce energy costs, and prevent surprise breakdowns. Free preventive maintenance included for up to 18 months on all new installations, with annual contracts available.
Variable Refrigerant Flow and split systems engineered for Queens properties with rooftop or balcony access — delivering zoned comfort, superior efficiency, and a flexible alternative to traditional ducted systems.
Smart HVAC controls and automation solutions that significantly reduce energy costs and environmental impact — helping Queens commercial properties meet rising utility efficiency demands and NYC sustainability goals.
Expert guidance through NYC Local Law 97 sustainability mandates. Denair helps Queens building owners navigate compliance requirements, avoid penalties, and future-proof their HVAC systems against evolving regulations.
Queens commercial properties face unique climate demands — brutal summer humidity, freezing winters, and the constant pressure of NYC's energy codes. Denair HVAC delivers affordable, high-performance commercial HVAC solutions backed by fixed proposal pricing, a 10-year extended warranty option, and a quality guarantee. With 28 certified technicians and in-house ductwork fabrication, we compress timelines and consistently deliver under budget — keeping your business comfortable and compliant year-round.
See how Queens and NYC commercial clients achieved better comfort, lower costs, and zero downtime with Denair HVAC.
"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."
"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!"
"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"
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
"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."
"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!"
"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"
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
"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."
"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!"
"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"
"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"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"Impeccable install. You can tell they're pros the moment they walk in."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
Queens businesses choose Denair for one reason: we deliver more value, faster, and at a lower cost than any competitor — guaranteed.
We optimize every Queens commercial HVAC proposal, consistently saving clients up to 35% without sacrificing performance or compliance.
All unintended costs are covered at our expense — Queens project owners get a locked scope with no surprise overruns.
Our technicians respond to urgent HVAC failures across Queens and all NYC boroughs, typically arriving on-site within 4 hours.
Recognized by Inc. 5000 as one of America's fastest-growing companies, with 400+ completed projects and $76M in project bids across NYC.
Experienced specialists dedicated to keeping Queens commercial properties running efficiently.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with a single used truck and a vision to bring affordable, high-quality commercial HVAC services to New York City. With over 17 years of hands-on industry experience spanning every aspect of the business — from field installation to executive strategy — he grew the company from a one-man operation to a $2M+ revenue firm recognized by Inc. 5000 as one of America's fastest-growing companies. Dennis leads Denair's strategic vision, championing value engineering and fixed-price contracts that give Queens and NYC commercial clients transparent, competitive pricing they can count on.
Service Manager
Thomas leads Denair HVAC's service operations across Queens and the broader NYC metro area, ensuring rapid response times, efficient technician scheduling, and consistent service quality on every commercial job. He coordinates the field team and client communications to minimize system downtime — a critical priority for Queens office buildings, retail centers, and medical facilities that cannot afford prolonged HVAC outages. His operational discipline is central to Denair's commitment to same-day service and the 4-hour emergency response window that sets the company apart in the competitive New York commercial HVAC market.
Application Engineer
Ramil designs and engineers commercial HVAC systems tailored to each building's specific performance, efficiency, and code compliance requirements. From equipment selection and load calculations to technical planning and NYC Local Law 97 alignment, he ensures every system Denair installs in Queens is optimized for long-term reliability and energy savings. His deep technical expertise bridges the gap between engineering intent and field execution — producing shop drawings, coordinating with project managers, and providing application support that guarantees code-compliant, high-performing outcomes for commercial clients across the borough.
Lead Estimator
Farrukh has been an integral part of Denair HVAC since 2010, bringing deep expertise in commercial HVAC estimating across the New York City market. As Lead Estimator, he is responsible for preparing comprehensive, accurate bid proposals in a timely manner — tracking opportunities with vendors, subcontractors, and clients to ensure every Queens commercial project is competitively priced and fully scoped. His value engineering analysis routinely identifies cost-saving alternatives that maintain performance standards, helping Denair deliver proposals that are up to 35% leaner than competing bids without cutting corners on quality or compliance.
VRF system installation costs for commercial properties in Queens typically range from $5,000 to $30,000+ depending on building size, number of zones, equipment brand, and existing infrastructure. Denair's value engineering approach regularly reduces VRF installation costs by up to 35% by identifying equal-performance equipment at lower prices. Contact us for a free, itemized estimate specific to your property.
Our Queens HVAC specialists are ready to answer your questions and provide a free, no-obligation estimate.
Denair HVAC serves commercial properties across Queens and all major NYC boroughs and surrounding counties — with fast, reliable response times.
11 Regions
Service Area
Within 4 Hours
Emergency Response
400+ Projects
Projects Completed
Contact us to confirm coverage and schedule a free on-site assessment for your commercial property.
Recognized as one of America's fastest-growing companies
Full team compliance with federal occupational safety standards
Licensed mechanical contractor meeting all NYC regulatory requirements
Fill out the form below and a Denair HVAC specialist will reach out promptly to discuss your Queens commercial project, schedule an on-site assessment, and provide a no-obligation, value-engineered proposal.
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