Energy Management & Automation
Smart controls and automated systems that significantly reduce energy costs and environmental impact, giving facility managers real-time visibility and control over all building systems.
Brooklyn's commercial buildings face unique energy and compliance demands — from aging infrastructure in Bay Ridge to high-density mixed-use developments in Williamsburg. Denair HVAC delivers intelligent building automation solutions that cut energy costs by up to 58%, ensure LL97 compliance, and put real-time control of your facility's HVAC, lighting, and environmental systems at your fingertips.
Comprehensive building automation and smart control solutions tailored for Brooklyn's commercial, residential, and mixed-use properties.
Smart controls and automated systems that significantly reduce energy costs and environmental impact, giving facility managers real-time visibility and control over all building systems.
Full-service Building Management System integration covering HVAC controls, sensors, and automated scheduling — engineered to maximize uptime and comfort across your entire facility.
Expert guidance through NYC's Local Law 97 sustainability mandates, helping Brooklyn building owners avoid penalties and meet carbon emission targets with smart automation upgrades.
Targeted retrofits and expert system tuning to modernize outdated equipment, enhance performance, and meet current energy standards without requiring a full system replacement.
Proactive maintenance plans that keep automated building systems running efficiently year-round, reducing energy costs and preventing unexpected breakdowns with regular inspections.
Round-the-clock certified technicians on call to diagnose and restore building automation and HVAC system failures — typically within 4 hours — minimizing operational disruption.
Our engineers conduct a thorough on-site evaluation of your Brooklyn facility's existing HVAC, electrical, and control infrastructure — identifying inefficiencies, compliance gaps, and automation opportunities specific to your building type and usage.
See how Brooklyn and NYC facility managers have transformed their buildings with Denair's automation expertise.
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"Impeccable install. You can tell they're pros the moment they walk in."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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!"
"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!"
"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!"
"excellent work and quality"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"Impeccable install. You can tell they're pros the moment they walk in."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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!"
"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!"
"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!"
"excellent work and quality"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"Crew was respectful, fast, and left our place spotless. Five stars."
"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"
"Impeccable install. You can tell they're pros the moment they walk in."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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 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!"
"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!"
"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!"
"excellent work and quality"
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
Brooklyn building owners and facility managers trust Denair HVAC for building automation because we combine certified expertise, proven value engineering, and a genuine commitment to long-term performance.
Brooklyn-headquartered since 2007, we understand NYC building codes, LL97 mandates, and the borough's unique infrastructure challenges.
28 OSHA-certified technicians, each with a minimum of 5 years of experience, trained and certified directly by major manufacturers.
Our proven value engineering approach saves clients up to 35% on building automation and HVAC budgets — clients saved over $186,000 in the last 6 months.
Fixed proposal pricing, a 10-year extended warranty option, and a quality guarantee — if our work doesn't meet code, we refund your money.
Experienced professionals dedicated to delivering smarter buildings across Brooklyn and NYC.
Founder & CEO
Dennis founded Denair HVAC in March 2007 — starting with one man and a beat-up used truck in Brooklyn — and grew the company to over $2 million in annual revenue within five years. With more than 17 years of experience spanning every aspect of commercial HVAC and building automation, Dennis leads the company's strategic vision with a focus on honesty, innovation, and delivering real value to NYC facility owners. Under his leadership, Denair was recognized by Inc. 5000 as one of America's fastest-growing companies, and the firm has completed over 400 projects across the five boroughs and the greater New York metro area.
Application Engineer
Ramil is Denair's Application Engineer specializing in HVAC and building automation system design tailored to each facility's unique performance and energy requirements. He oversees equipment selection, technical planning, control system integration, and application support — ensuring every automated building solution is code-compliant, energy-efficient, and built for long-term reliability. His deep technical knowledge is central to Denair's ability to deliver value-engineered automation proposals that consistently outperform the competition on both price and performance across Brooklyn's diverse commercial building stock.
Service Manager
Thomas leads Denair HVAC's service operations, overseeing the rapid deployment of technicians for building automation maintenance, repairs, and emergency response across Brooklyn and the greater NYC metro area. He is responsible for fast response times, efficient scheduling, and consistent service quality — coordinating technicians and customer communication to minimize downtime and ensure seamless building system performance. His operational leadership ensures that Denair's 24/7 emergency repair commitment is upheld, with most service calls resolved within four hours of contact.
Lead Estimator
Farrukh has been with Denair HVAC since 2010 and serves as the company's Lead Estimator, providing comprehensive and timely bid proposal preparation for building automation and HVAC projects of all sizes — from $10,000 fit-outs to $5,000,000 capital improvement programs. He is the engine behind Denair's individual estimating approach, delivering detailed scope breakdowns, alternates, and revisions for every bid while tracking opportunities with vendors, subcontractors, and clients. Farrukh's meticulous work is a key driver of Denair's ability to offer proposals up to 35% more competitive than the market.
Building automation (BAS or BMS) integrates your HVAC, lighting, and environmental controls into one intelligent system, allowing automated scheduling, remote monitoring, and real-time adjustments. For Brooklyn commercial properties — especially those subject to NYC's Local Law 97 carbon emission limits — a BAS is one of the most effective tools for reducing energy costs, avoiding penalties, and improving tenant comfort across the building.
Speak with one of our Brooklyn-based automation specialists for a free consultation and site assessment.
Denair HVAC provides building automation services across Brooklyn and the greater New York metropolitan area, including all five boroughs and surrounding counties.
11 Regions
Service Area
24/7 Available
Emergency Response
400+ Projects
Projects Completed
Contact us to confirm coverage and schedule a free on-site assessment for your building.
Recognized as one of America's fastest-growing companies
All technicians hold OSHA 40-hour safety certification
Licensed HVAC and mechanical contractor in New York
Fill out the form below and a Denair HVAC specialist will reach out to schedule your free on-site assessment. Most estimates are delivered within 24 hours, with fixed proposal pricing and no hidden costs.
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