CRAC Unit Installation
Full turnkey installation of Computer Room Air Conditioning units tailored to your server room's heat load and layout, ensuring precision temperature and humidity control from day one.
Manhattan's high-density commercial buildings and colocation facilities demand precision cooling that never fails. Denair HVAC delivers specialized computer room air conditioning services engineered for 24/7 uptime, tight temperature tolerances, and NYC compliance—protecting your servers, network infrastructure, and critical operations from costly thermal events year-round.
Comprehensive precision cooling solutions designed to keep Manhattan's mission-critical environments running at peak performance.
Full turnkey installation of Computer Room Air Conditioning units tailored to your server room's heat load and layout, ensuring precision temperature and humidity control from day one.
Proactive, scheduled maintenance plans that extend equipment lifespan, maximize cooling efficiency, and prevent unexpected downtime in your critical IT environment. Free maintenance included up to 18 months on new installations.
Around-the-clock emergency repair response—typically within 4 hours—to diagnose and restore cooling in server rooms before thermal events damage hardware or disrupt operations.
Retrofit and tune-up services for aging computer room cooling systems, modernizing performance and energy efficiency without full replacement—engineered for mission-critical uptime and compliance.
Smart controls and automation solutions that optimize cooling efficiency in server environments, reducing energy costs significantly while maintaining precise thermal management.
Expert guidance on meeting NYC's Local Law 97 sustainability mandates for commercial and data center facilities, ensuring your cooling infrastructure remains compliant and penalty-free.
Manhattan's dense commercial towers and colocation facilities require cooling systems that operate with zero tolerance for failure. Denair HVAC designs, installs, and maintains computer room air conditioning systems engineered specifically for server environments—delivering stable temperatures, controlled humidity, and N+1 redundancy. With over 19 years of NYC mechanical contracting experience and manufacturer-certified technicians, we safeguard your IT assets against thermal risk every day.
See how Denair HVAC has protected critical operations for businesses across New York City.
"Denair is the most dependable HVAC service company in New York!"
"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."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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!"
"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."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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."
"Denair is professional and courteous."
"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 is the most dependable HVAC service company in New York!"
"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."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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!"
"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."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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."
"Denair is professional and courteous."
"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 is the most dependable HVAC service company in New York!"
"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."
"I am very pleased with the service and professionalism we receive from all the techs and staff at Denair."
"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!"
"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."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Impeccable install. You can tell they're pros the moment they walk in."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"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."
"Denair is professional and courteous."
"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!"
Manhattan facilities trust Denair HVAC for precision cooling because we combine certified expertise, rapid response, and proven cost savings.
OSHA-certified and manufacturer-trained technicians handle every computer room cooling job to the highest NYC standards.
24/7 emergency service with same-day response—typically within 4 hours—keeping Manhattan server rooms operational around the clock.
Value Engineering cuts HVAC costs by up to 35%, with clients across NYC saving over $186,000 on commercial installations.
Founded in 2007 and recognized by Inc. 5000, Denair brings deep New York mechanical contracting expertise to every project.
Experienced professionals dedicated to Manhattan's most demanding cooling environments.
Founder & CEO
Dennis founded Denair HVAC in March 2007—starting with just one man and a beat-up used truck. With over 17 years of hands-on HVAC industry experience, he has built the company from the ground up into a $2M+ revenue enterprise recognized by Inc. 5000 as one of America's fastest-growing companies. Dennis leads the company's strategic vision with a focus on value engineering, mission-critical precision, and delivering affordable, reliable mechanical solutions to New York's most demanding commercial and critical-environment clients, including server rooms and data centers throughout Manhattan.
Service Manager
Thomas leads Denair HVAC's service operations with a relentless focus on fast response times, efficient scheduling, and consistent service quality. He is the central coordinator ensuring that computer room and commercial HVAC clients across Manhattan and the broader NYC metro area experience minimal downtime and seamless communication. Thomas oversees technician deployment, customer interaction, and service quality from the first call through job completion—making him the backbone of Denair's promise to deliver same-day service and keep critical environments running reliably in every season.
Application Engineer
Ramil is Denair HVAC's Application Engineer, specializing in designing cooling systems tailored to each facility's unique performance and efficiency requirements. For computer room and server room projects across Manhattan, Ramil oversees equipment selection, technical planning, load calculations, and application support to deliver precision cooling solutions that meet NYC building codes and manufacturer specifications. His engineering expertise ensures every installation is code-compliant, energy-efficient, and built for long-term reliability—reducing thermal risk and operational costs for data-sensitive environments.
Lead Estimator
Farrukh has been an integral part of Denair HVAC since 2010, serving as Lead Estimator for all commercial and mission-critical projects. He is responsible for preparing comprehensive bid proposals in a timely manner, tracking opportunities with vendors, subcontractors, and clients across New York City. For computer room air conditioning projects in Manhattan, Farrukh leverages deep market knowledge to identify cost-saving opportunities through value engineering—ensuring clients receive competitive, accurate proposals with detailed scope breakdowns, alternates, and revisions that maximize HVAC budgets without sacrificing performance.
Computer room air conditioning (CRAC) is a specialized precision cooling system designed to maintain stable temperatures and humidity levels in server rooms, data centers, and IT closets. Unlike standard commercial AC, CRAC units provide continuous, high-density cooling with tight tolerances—typically 68–77°F and 40–60% relative humidity—to prevent equipment overheating and protect sensitive hardware around the clock.
Speak with a Denair HVAC specialist for a free, no-obligation consultation tailored to your facility.
Denair HVAC serves computer room and commercial HVAC clients across Manhattan, all NYC boroughs, and the surrounding metro region.
11 Regions
Service Area
24/7
Emergency Availability
400+
Projects Completed
Contact us to confirm coverage and schedule a free on-site assessment for your facility.
Named one of America's fastest-growing companies.
Full OSHA safety compliance on every job site.
Licensed HVAC contractor fully compliant with NYC regulations.
Fill out the form below and a Denair HVAC specialist will contact you promptly to discuss your server room cooling requirements, provide a detailed scope breakdown, and deliver a competitive, fixed-price proposal with 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