ERV Installation
Full turnkey installation of energy recovery ventilator systems tailored to your property's size and layout, ensuring optimal fresh-air delivery and maximum energy recovery efficiency from day one.
Long Island's humid summers and cold winters demand smart ventilation. Denair HVAC's certified technicians install Energy Recovery Ventilators that bring fresh outdoor air into your home or building while recovering up to 80% of conditioned air energy—cutting utility bills, improving indoor air quality, and keeping your space comfortable year-round.
Complete ERV solutions for Long Island homes and businesses, from system design to installation and ongoing maintenance.
Full turnkey installation of energy recovery ventilator systems tailored to your property's size and layout, ensuring optimal fresh-air delivery and maximum energy recovery efficiency from day one.
Expert load calculations, equipment selection, and ductwork planning to design an ERV system that meets Long Island building codes and matches your home's or facility's specific ventilation requirements.
Seamless retrofitting of energy recovery ventilators into your current heating and cooling system, eliminating the need for a full replacement while dramatically improving indoor air quality and energy savings.
Scheduled inspection and cleaning of ERV cores, filters, and ductwork connections to keep your system running at peak efficiency and extend equipment lifespan well beyond standard service life.
Post-installation air testing and balancing with certified reports, ensuring your energy recovery ventilator delivers precisely the airflow volumes needed for code compliance and peak performance.
Rapid diagnosis and repair of ERV malfunctions by certified technicians available for urgent calls, restoring proper ventilation and energy recovery with minimal disruption to your comfort or operations.
Our technician visits your Long Island property to evaluate your existing HVAC setup, measure square footage, assess ductwork, and discuss your ventilation goals—so we can recommend the right ERV size and placement with no guesswork.
See how Long Island homeowners and businesses improved air quality and slashed energy bills with Denair ERV installations.
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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!"
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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."
"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!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
"excellent work and quality"
"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."
"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!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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!"
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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."
"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!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
"excellent work and quality"
"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."
"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!"
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"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!"
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Impeccable install. You can tell they're pros the moment they walk in."
"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"
"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."
"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!"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"Denair is professional and courteous."
"excellent work and quality"
"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."
"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!"
Denair HVAC brings over 19 years of New York HVAC expertise, transparent pricing, and a certified team that Long Island property owners trust.
OSHA-certified, manufacturer-trained technicians with 5+ years of experience each handle every ERV installation.
We identify equal-performance equipment at lower cost, saving Long Island clients up to 35% on their ERV project budget.
Up to 10-year manufacturer warranty and 18 months of free preventive maintenance included with every new ERV installation.
Serving Nassau County, Long Island, and the broader New York Metro Area with fast scheduling and guaranteed on-time project delivery.
Experienced professionals dedicated to delivering exceptional ERV installation results.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with just one man and a beat-up used truck, driven by a vision to bring honest, affordable mechanical contracting to the New York Metro Area. With over 17 years of hands-on HVAC experience, he has grown the company to a $2 million+ operation recognized by the Inc. 5000 as one of America's fastest-growing companies. Under his leadership, Denair has expanded its services to Long Island and surrounding counties, completing 400+ projects ranging from residential ERV installations to large-scale commercial HVAC systems. Dennis leads the company's strategic vision with a relentless commitment to quality, transparent pricing, and client satisfaction.
Application Engineer
Ramil is the technical backbone of Denair HVAC's system design division, specializing in energy recovery ventilator selection, HVAC load calculations, and code-compliant mechanical solutions tailored to each building's unique needs. He ensures every ERV installation on Long Island is engineered for maximum efficiency, long-term reliability, and adherence to New York State building codes. Ramil oversees equipment selection and technical planning, coordinating closely with field crews to guarantee that shop drawings, duct layouts, and control systems align perfectly with the approved design—delivering measurable energy savings from day one.
Service Manager
Thomas leads Denair HVAC's field service operations, overseeing every ERV installation and maintenance job from initial scheduling through final sign-off. He coordinates certified technician teams across Long Island and the New York Metro Area, ensuring fast response times, efficient crew deployment, and consistent service quality on every project. Thomas serves as the key point of contact between field crews and clients, maintaining clear communication throughout each job to eliminate surprises and ensure smooth, on-time project completion. His operational discipline is a core reason Denair completes 80% of projects ahead of schedule.
Lead Estimator
Farrukh has been a cornerstone of Denair HVAC's estimating operations since 2010, bringing nearly 15 years of expertise in preparing comprehensive, accurate bid proposals for ERV, HVAC, and mechanical projects of all sizes. He is the dedicated estimator assigned to every client project, providing detailed scope breakdowns, value-engineered alternatives, and transparent pricing revisions that have helped Long Island and New York Metro clients save thousands of dollars. Farrukh's meticulous approach to tracking vendor opportunities and subcontractor pricing ensures Denair consistently delivers proposals 35% below standard market rates without compromising on equipment quality or performance.
An ERV (Energy Recovery Ventilator) and an HRV (Heat Recovery Ventilator) both exchange stale indoor air for fresh outdoor air while recovering energy. The key difference is that an ERV also transfers moisture, making it better suited for Long Island's humid summers. An HRV only transfers heat, making it more effective in extremely cold, dry climates. Most Long Island homes benefit more from an ERV.
Speak with a certified Denair HVAC technician for a free consultation tailored to your Long Island property.
Denair HVAC installs energy recovery ventilators across Long Island, Nassau County, and the greater New York Metro Area.
11+ Regions
Service Area
Same Day
Response Time
4.7★ Rated
Customer Rating
Contact us to confirm coverage and schedule your free on-site ERV assessment today.
Named one of America's fastest-growing companies in 2019.
All technicians hold OSHA 40-hour safety certification.
Licensed Mechanical/HVAC Contractor operating in New York.
Fill out the form below and a Denair HVAC specialist will contact you within one business day to discuss your energy recovery ventilator needs, confirm your service area, and schedule a free on-site assessment—no obligation required.
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