Long Island City's commercial kitchens, restaurants, and industrial facilities demand properly balanced ventilation to stay code-compliant and safe. Denair HVAC's certified technicians design, install, and service makeup air systems that replace exhaust air, maintain positive pressure, and keep your operations running efficiently year-round. Get expert solutions built for NYC's demanding commercial environment.
Complete makeup air solutions for Long Island City commercial properties — from design and installation to repair and ongoing maintenance.
Turnkey installation of commercial makeup air units sized to your facility's exhaust requirements. Our certified technicians handle equipment, ductwork, controls, and commissioning for restaurants, kitchens, and industrial spaces.
Fast, reliable repair of malfunctioning makeup air units with same-day response available. We diagnose and fix all major brands, restoring proper airflow balance and preventing operational shutdowns.
Proactive maintenance plans that keep your makeup air system performing at peak efficiency year-round. Regular inspections, filter changes, and component checks reduce breakdowns and extend equipment lifespan.
Modernize outdated makeup air equipment with targeted retrofits to improve energy efficiency, meet current NYC code requirements, and optimize airflow performance without full system replacement.
Certified air testing and balancing services ensure your makeup air system delivers the correct CFM to offset exhaust volumes. Detailed certified reports provided upon completion of every job.
Smart controls and automation integrated with your makeup air system to reduce energy consumption, improve climate control, and provide real-time monitoring of airflow and system performance.
Commercial kitchens, restaurants, and industrial facilities in Long Island City operate under strict NYC ventilation codes that require properly engineered makeup air systems to replace exhausted air. Denair HVAC delivers fully engineered, code-compliant makeup air installations and service programs backed by over 19 years of NYC commercial HVAC experience. From initial load calculations to system commissioning and ongoing maintenance, we ensure your facility maintains safe pressure balance, optimal air quality, and uninterrupted operations — with value-engineered pricing that saves you up to 35%.
See how Long Island City businesses have improved ventilation, cut energy costs, and stayed code-compliant with Denair HVAC.
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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"
"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."
"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."
"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"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is the most dependable HVAC service company in New York!"
"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!"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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..."
"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!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"excellent work and quality"
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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"
"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."
"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."
"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"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is the most dependable HVAC service company in New York!"
"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!"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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..."
"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!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"excellent work and quality"
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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"
"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."
"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."
"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"
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is the most dependable HVAC service company in New York!"
"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!"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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..."
"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!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"excellent work and quality"
Long Island City commercial property owners trust Denair HVAC for makeup air systems because we combine deep technical expertise with transparent pricing and a proven track record across NYC.
28 OSHA-certified technicians with 5+ years of experience, trained by major HVAC manufacturers for code-compliant work.
We optimize every makeup air project to save Long Island City clients up to 35% without compromising performance or compliance.
24/7 emergency repairs with same-day service — usually within 4 hours — keeping your NYC commercial operations running without costly downtime.
All unintended project costs are covered at our expense. Long Island City clients always pay the agreed-upon price, nothing more.
Experienced professionals dedicated to delivering the best commercial HVAC solutions in Long Island City.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with one man and a beat-up used truck, building the company from zero to over $2 million in annual revenue within five years. With over 17 years of hands-on HVAC industry experience, Dennis leads the company's strategic vision and has grown Denair into one of America's fastest-growing companies — recognized by the Inc. 5000. His deep expertise spans commercial makeup air systems, complex HVAC installations, and value-engineered mechanical solutions across New York City, including Long Island City and the greater NYC metro area. Under his leadership, Denair has completed over 400 projects and driven over $76 million in project bids.
Service Manager
Thomas leads Denair HVAC's service operations across New York City, including Long Island City's busy commercial and restaurant districts. He ensures fast response times, efficient technician scheduling, and consistent service quality on every makeup air system job. Thomas coordinates directly with clients and field technicians to minimize equipment downtime, maintain clear communication, and deliver a seamless service experience from initial call to final sign-off. His operational oversight means that whether it's a routine maintenance visit or an emergency repair, Long Island City clients can count on Denair's team to show up prepared and resolve issues efficiently.
Application Engineer
Ramil designs and engineers HVAC systems — including commercial makeup air units — tailored to each building's unique performance, airflow, and energy efficiency requirements. For Long Island City's diverse commercial properties, from restaurant kitchens to industrial facilities, Ramil oversees equipment selection, load calculations, technical planning, and application support to ensure every makeup air system delivers long-lasting reliability, measurable energy savings, and full compliance with NYC mechanical codes. His engineering expertise is central to Denair's ability to optimize proposals by up to 35% through value engineering without sacrificing system performance or code compliance.
Lead Estimator
Farrukh has been with Denair HVAC since 2010, bringing extensive experience in bid preparation and project cost estimation for commercial HVAC and makeup air system projects throughout New York City. He is responsible for preparing comprehensive, timely bid proposals and tracking opportunities with vendors, subcontractors, and clients. For Long Island City commercial clients, Farrukh's dedicated approach ensures every makeup air systems proposal includes detailed scope breakdowns, alternates, and value-engineered options — giving property managers and business owners full pricing transparency and confidence before any work begins.
As a general rule, a makeup air system is required when your exhaust system moves 400 CFM or more, though NYC mechanical codes may require it at lower thresholds for commercial kitchens. The exact CFM needed equals the total exhaust volume to maintain neutral or slight positive building pressure. Denair HVAC performs load calculations to determine the precise makeup air CFM for your specific facility and exhaust configuration.
Our Long Island City HVAC experts are ready to answer your questions and provide a free, no-obligation estimate.
Denair HVAC serves commercial properties across New York City and the greater metro area with expert makeup air systems service.
11+ Regions
Service Area
24/7 Service
Emergency Availability
4.7★ Rated
Customer Rating
Contact us to confirm service availability and schedule a free on-site estimate for your Long Island City facility.
Recognized as one of America's fastest-growing companies.
All technicians hold OSHA 40-hour safety certification.
Licensed Mechanical/HVAC contractor registered in New York.
Fill out the form below and a Denair HVAC specialist will contact you within one business day to discuss your commercial makeup air system needs, provide a detailed scope, and deliver a value-engineered proposal with no obligation.
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