VRF System Installation
Full turnkey installation of Mitsubishi City Multi VRF systems tailored to your building's layout. Includes equipment selection, refrigerant piping, indoor unit placement, and commissioning for optimal zoned comfort.
Long Island City's dense mix of high-rise residences, commercial lofts, and converted industrial spaces demands precision climate control—and Mitsubishi City Multi VRF systems deliver exactly that. Denair HVAC brings over 19 years of manufacturer-certified expertise to VRF installation, maintenance, and repair, keeping your system running at peak efficiency through every New York season.
Comprehensive VRF solutions for Long Island City properties—from new installations to expert repairs and ongoing maintenance.
Full turnkey installation of Mitsubishi City Multi VRF systems tailored to your building's layout. Includes equipment selection, refrigerant piping, indoor unit placement, and commissioning for optimal zoned comfort.
Scheduled maintenance plans that keep your Mitsubishi VRF system running efficiently year-round. Includes coil cleaning, refrigerant checks, controls calibration, and detailed service reports to extend equipment life.
24/7 emergency repair service for Mitsubishi City Multi VRF systems. Manufacturer-certified technicians arrive fully equipped—typically within 4 hours—to diagnose and restore your system with minimal downtime.
Modernize aging VRF infrastructure with targeted retrofits and performance tune-ups. We optimize refrigerant flow, upgrade controls, and integrate smart automation to reduce energy costs without full system replacement.
Smart controls and BMS integration for Mitsubishi City Multi VRF systems that significantly reduce energy consumption. Ideal for Long Island City's office towers and multi-family buildings seeking LL97 compliance.
Post-installation air and refrigerant testing and balancing with certified reports. Ensures every zone of your Mitsubishi VRF system performs to manufacturer specifications and NYC code requirements.
We conduct an on-site inspection of your Long Island City property, evaluating building layout, existing infrastructure, load requirements, and any rooftop or balcony access points to define the optimal VRF configuration.
See how Long Island City and NYC property owners achieve reliable comfort and energy savings with Denair HVAC.
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"excellent work and quality"
"Denair is professional and courteous."
"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 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"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"excellent work and quality"
"Denair is professional and courteous."
"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 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"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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."
"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"
"Crew was respectful, fast, and left our place spotless. Five stars."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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!"
"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."
"Impeccable install. You can tell they're pros the moment they walk in."
"excellent work and quality"
"Denair is professional and courteous."
"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 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"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
Long Island City property owners trust Denair HVAC for manufacturer-certified expertise, transparent pricing, and a track record built over 19 years across New York.
Trained and certified directly by Mitsubishi and other major manufacturers, ensuring proper VRF installation and repair every time.
24/7 emergency coverage with technicians typically on-site within 4 hours—critical for Long Island City's busy commercial and residential properties.
Our dedicated estimators optimize every proposal, saving clients up to 35% on VRF projects across Queens, Brooklyn, and the greater NYC metro.
Fixed proposal pricing, a 10-year extended warranty option, and a money-back quality guarantee give you complete peace of mind on every job.
Experienced professionals dedicated to delivering exceptional VRF service across Long Island City and NYC.
Founder & CEO
Dennis founded Denair HVAC in March 2007 after being laid off from a 7-year career in the HVAC industry—starting with one man and a beat-up used truck. With over 17 years of hands-on experience spanning every facet of the business, he grew the company from a one-person operation to a $2 million+ revenue firm recognized by Inc. 5000 as one of America's fastest-growing companies. Dennis leads Denair's strategic vision with a focus on transparency, technical excellence, and delivering affordable VRF and commercial HVAC solutions to Long Island City and the greater New York market.
Service Manager
Thomas leads Denair HVAC's service operations with a relentless focus on fast response times, efficient scheduling, and consistent quality. He coordinates the full technician team and manages customer communication from initial call to job completion, ensuring Mitsubishi VRF systems and all other HVAC equipment in Long Island City and across the NYC metro receive prompt, professional attention. Thomas's operational expertise directly reduces client downtime, keeps systems running reliably through New York's demanding seasons, and ensures every service interaction is smooth and satisfying from start to finish.
Application Engineer
Ramil designs and supports HVAC systems tailored to each building's unique performance and efficiency requirements. For Mitsubishi City Multi VRF projects across Long Island City and Queens, he oversees equipment selection, refrigerant circuit design, and technical planning to ensure every installation achieves long-lasting reliability, measurable energy savings, and full compliance with NYC building codes including LL97 sustainability mandates. His application engineering expertise ensures that every VRF system Denair deploys is precisely matched to the building's load profile and operational goals.
Lead Estimator
Farrukh has been with Denair HVAC since 2010, bringing deep expertise in bid preparation and project scoping for complex commercial HVAC and VRF projects across New York City. He is responsible for crafting comprehensive, timely proposals for Mitsubishi City Multi VRF installations and service contracts, applying value engineering principles to identify cost-saving opportunities without compromising performance. His meticulous approach to tracking opportunities with vendors, subcontractors, and clients has been instrumental in Denair's ability to consistently offer pricing that beats the competition while delivering superior results.
Mitsubishi City Multi VRF systems are widely regarded as among the best in the industry. They deliver precise multi-zone temperature control, exceptional energy efficiency—reducing energy costs by up to 58%—and outstanding reliability. Their inverter-driven compressors and heat recovery capabilities make them ideal for Long Island City's diverse building types, from high-rise offices to mixed-use residential properties.
Talk to our Mitsubishi-certified technicians for a free consultation and estimate.
Denair HVAC serves Long Island City and surrounding neighborhoods across Queens, Brooklyn, Manhattan, and the greater NYC metro.
11 Regions
Service Area
24/7
Emergency Availability
400+
Projects Completed
Reach out to confirm coverage and schedule your Mitsubishi VRF service today.
Named one of America's fastest-growing and most successful companies.
Full team compliance with rigorous OSHA safety training standards.
Trained and certified by Mitsubishi and other leading HVAC manufacturers.
Fill out the form below and a Denair HVAC specialist will contact you promptly to discuss your Mitsubishi City Multi VRF installation, repair, or maintenance needs—with no obligation and no hidden fees.
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