HVAC Installation
Turnkey commercial HVAC installation with end-to-end project management. Our 28 certified technicians handle jobs from $10,000 to $5,000,000, saving clients up to 35% through value engineering.
Managing residential or commercial properties in Manhattan means zero tolerance for HVAC downtime. Denair HVAC delivers certified installation, preventive maintenance, 24/7 emergency repairs, and LL97 compliance support—keeping every tenant comfortable across New York's most demanding buildings. From co-ops on the Upper West Side to high-rises in Midtown, we keep your systems running.
Comprehensive HVAC solutions designed for Manhattan property managers—covering installation, maintenance, repairs, and compliance.
Turnkey commercial HVAC installation with end-to-end project management. Our 28 certified technicians handle jobs from $10,000 to $5,000,000, saving clients up to 35% through value engineering.
Proactive maintenance plans that extend system lifespan, reduce energy costs, and prevent unexpected breakdowns. Includes free preventive maintenance for up to 18 months on all new installations.
Around-the-clock emergency HVAC response for property managers who cannot afford downtime. Certified technicians typically arrive within 4 hours, handling all major brands from ½ to 100 tons.
Expert guidance through NYC's Local Law 97 sustainability mandates, helping Manhattan property managers avoid penalties and meet emissions targets with practical, cost-effective HVAC upgrades.
Smart HVAC controls and building automation solutions that reduce energy costs by up to 58% and minimize environmental impact across multi-family and commercial Manhattan properties.
Targeted retrofits and expert system tune-ups to modernize outdated equipment without full replacement—optimizing performance, comfort, and compliance in aging Manhattan buildings.
Manhattan's dense building stock—from pre-war co-ops to modern Class-A towers—demands an HVAC contractor who understands multi-tenant complexity, NYC's strict compliance codes, and the pressure of keeping every unit comfortable year-round. Denair HVAC brings 19+ years of New York experience, fixed-proposal pricing, and a 10-year extended warranty option, so property managers can budget confidently and respond to tenant concerns without delays.
See how Manhattan property managers and building owners depend on Denair HVAC to deliver results.
"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!"
"Denair is the most dependable HVAC service company in New York!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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..."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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"
"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."
"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."
"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."
"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!"
"Denair is the most dependable HVAC service company in New York!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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..."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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"
"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."
"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."
"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."
"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!"
"Denair is the most dependable HVAC service company in New York!"
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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..."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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"
"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."
"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."
"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."
Manhattan property managers choose Denair for one reason: we make HVAC problems disappear—on time, on budget, and without excuses.
Emergency technicians on call around the clock, typically on-site within 4 hours anywhere in Manhattan.
Our estimators save Manhattan property managers up to 35% on HVAC budgets using alternative approved equipment of equal value.
Deep expertise in Local Law 97 and NYC building codes keeps your properties compliant and penalty-free.
All unintended costs are covered at our expense—no surprise invoices for building managers or ownership groups.
Experienced professionals dedicated to every aspect of your HVAC project.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with little more than a beat-up used truck and 7 years of hands-on HVAC experience. Over the past 19 years, he has built the company into one of New York's most recognized commercial HVAC contractors, growing revenue to over $2 million within the first five years and earning an Inc. 5000 ranking. Dennis leads Denair's strategic vision, championing value engineering and fixed-price guarantees that have saved Manhattan property managers and building owners hundreds of thousands of dollars. His commitment to honesty, quality, and client satisfaction defines the culture of every team he leads.
Service Manager
Thomas leads Denair HVAC's service operations across New York City, ensuring fast response times, efficient technician scheduling, and consistent service quality for property managers throughout Manhattan and the surrounding boroughs. He coordinates field technicians and customer communication to keep systems running reliably, minimize tenant disruptions, and deliver a seamless service experience from the first call to final sign-off. Thomas's operational focus means that when a building's HVAC system fails on a winter night in the West Village or a sweltering summer afternoon in Midtown, the right technician is dispatched and on-site quickly.
Application Engineer
Ramil designs and supports HVAC systems tailored to the unique performance and efficiency requirements of each Manhattan building—whether a pre-war co-op in the Upper East Side or a modern mixed-use tower in Hudson Yards. He oversees equipment selection, technical planning, and application support to ensure long-lasting reliability, measurable energy savings, and full compliance with NYC's evolving building codes, including Local Law 97. Ramil's engineering work underpins every value-engineered proposal Denair delivers, giving property managers confidence that the system specified is the right one for their exact building.
Lead Estimator
Farrukh has been a cornerstone of Denair HVAC since 2010, bringing deep expertise in bid proposal preparation for commercial and residential HVAC projects across New York City. As Lead Estimator, he is responsible for delivering comprehensive, accurate, and timely proposals—tracking opportunities with vendors, subcontractors, and property management clients. Farrukh's mastery of value engineering is a key reason Denair's clients consistently save up to 35% on their HVAC budgets. Over his tenure, he has contributed to over $76 million in project bids, helping Manhattan property managers make informed, cost-effective decisions.
VP Business Development
Anastasiya leads Denair HVAC's business development and new client acquisition strategy, with a focus on building long-term partnerships with property management firms, general contractors, and building owners across Manhattan and the greater NYC metro area. In her role, she identifies market opportunities, develops strategic partnerships, and implements growth initiatives that have helped Denair expand its footprint across some of New York's most recognized property management companies—including AKAM, Douglas Elliman, Related, and Rose Associates. Anastasiya's client-first approach ensures that every new relationship is built on transparency, reliability, and measurable value.
In most Manhattan condos, each unit has its own HVAC equipment—typically a PTAC unit, fan coil unit, or split system—connected to the building's central chilled and hot water loops or a dedicated refrigerant circuit. The building's common areas and lobbies are usually served by a central system. Property managers are responsible for maintaining shared infrastructure, while individual unit owners typically maintain their own in-unit equipment.
Speak with a Denair HVAC specialist for a free consultation tailored to your building's needs.
Denair HVAC provides trusted HVAC contractor services to property managers across Manhattan and the greater New York metro area.
11 Regions
Service Area
24/7 Service
Emergency Availability
4.7★ Rated
Customer Rating
Contact us to confirm service coverage and get a free estimate for your building.
Recognized as one of America's fastest-growing companies.
Full OSHA 40-hour safety certification for all field operations.
Registered Mechanical/HVAC Contractor licensed to operate in New York.
Fill out the form below and a Denair HVAC specialist will contact you within one business day to discuss your property's HVAC needs, schedule a site visit, and provide a no-obligation estimate.
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