CRAC Unit Installation
Expert installation of computer room air conditioning units sized and configured for your server room's exact heat load, ensuring stable temperatures and humidity levels critical to hardware longevity and uptime.
Brooklyn's data centers, server rooms, and IT facilities demand precision cooling that never fails. Denair HVAC delivers specialized computer room air conditioning solutions engineered for 24/7 uptime, tight temperature and humidity control, and compliance with mission-critical standards — protecting your equipment and your operations year-round.
Comprehensive precision cooling solutions designed to protect mission-critical IT infrastructure and ensure uninterrupted operations.
Expert installation of computer room air conditioning units sized and configured for your server room's exact heat load, ensuring stable temperatures and humidity levels critical to hardware longevity and uptime.
Around-the-clock emergency response for cooling failures in server rooms and data centers. Certified technicians typically arrive within 4 hours, restoring climate control before hardware damage or downtime occurs.
Scheduled maintenance programs that keep precision cooling systems performing at peak efficiency, reducing the risk of unexpected failures, extending equipment lifespan, and maintaining compliance with uptime requirements.
Retrofit and modernize aging computer room cooling equipment to meet current energy efficiency standards and redundancy requirements — without the disruption and cost of a full system replacement.
Smart controls and automation solutions that optimize cooling performance in real time, significantly reducing energy costs while maintaining the precise environmental conditions your IT infrastructure requires.
Post-installation airflow testing and balancing with certified reports to confirm your computer room cooling system is delivering consistent, code-compliant performance across all critical zones.
Server rooms and data centers in Brooklyn operate under constant thermal stress — even brief cooling failures can mean costly hardware damage and significant downtime. Denair HVAC specializes in computer room air conditioning systems engineered for zero-tolerance environments, delivering precise temperature and humidity control, redundant configurations, and full NYC code compliance. With over 19 years of commercial HVAC experience and a team of 28 certified technicians, we design, install, and maintain precision cooling solutions that keep your critical operations running without interruption.
See how Brooklyn and NYC businesses rely on Denair HVAC to protect their critical infrastructure.
"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!"
"Impeccable install. You can tell they're pros the moment they walk in."
"Denair is professional and courteous."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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."
"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"
"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 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..."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Denair is the most dependable HVAC service company in New York!"
"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!"
"Impeccable install. You can tell they're pros the moment they walk in."
"Denair is professional and courteous."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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."
"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"
"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 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..."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Denair is the most dependable HVAC service company in New York!"
"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!"
"Impeccable install. You can tell they're pros the moment they walk in."
"Denair is professional and courteous."
"Really great to work with, awesome staff, happy to work with them anytime again in the future! Highly recommend."
"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."
"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"
"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 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..."
"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."
"Amazing HVAC vendor who is doing multiple accounts for my company."
"These guys are the best. Installed my central air condition. They are quick, thorough and honest! I definitely recommend them."
"Crew was respectful, fast, and left our place spotless. Five stars."
"Denair is the most dependable HVAC service company in New York!"
Brooklyn facility managers and IT directors choose Denair HVAC for precision, reliability, and a team that understands what's at stake.
Cooling emergencies in Brooklyn server rooms are resolved typically within 4 hours — no waiting days for a manufacturer rep.
28 technicians trained and certified by major HVAC manufacturers, handling precision cooling for mission-critical facilities across Brooklyn and NYC.
All unintended costs are covered at our own expense — no surprise invoices after your computer room installation or repair is complete.
Nationally recognized as one of America's fastest-growing companies, with over 400 projects delivered across the New York metro area.
Experienced specialists dedicated to protecting Brooklyn's critical infrastructure.
Founder & CEO
Dennis founded Denair HVAC in March 2007 with one man and a beat-up used truck right after being laid off from a 7-year career in the HVAC industry. Armed with over 17 years of hands-on HVAC expertise and deep knowledge of Brooklyn and NYC's commercial building landscape, he grew the company to $2 million in revenue within just five years. Under his strategic leadership, Denair earned recognition by Inc. 5000 as one of America's fastest-growing companies. Dennis oversees all aspects of the business—from rooftop unit replacement projects across Brooklyn's flat-roof commercial buildings to large-scale capital improvement contracts throughout the NYC metro area—ensuring every client receives honest, high-quality service.
Financial Manager
Tanya brings over 15 years of experience in finance, budgeting, and forecasting to the Denair HVAC team. She manages all aspects of accounting, financial planning, and insurance for the company—ensuring every rooftop unit replacement and installation project is backed by financial integrity and transparent cost management. Her meticulous approach to budgeting directly supports Denair's ability to offer fixed proposal pricing and value-engineered solutions that consistently save Brooklyn and NYC clients thousands of dollars. Tanya's financial stewardship has been a cornerstone of Denair's steady growth from a one-man operation to a recognized industry leader.
Lead Estimator
Farrukh has been with Denair HVAC since 2010, making him one of the company's longest-serving and most trusted team members. As Lead Estimator, he is responsible for preparing comprehensive and timely bid proposals for rooftop unit replacement and installation projects across Brooklyn and the wider NYC metro area. His expertise in tracking opportunities with vendors, subcontractors, and customers ensures every scope is accurately priced—with alternates and revisions provided for each bid. Farrukh's value engineering approach has helped Brooklyn property managers and business owners save significantly on their HVAC capital improvement budgets.
Service Manager
Thomas leads Denair HVAC's service operations, overseeing fast response times, efficient technician scheduling, and consistent service quality for rooftop unit projects throughout Brooklyn. He coordinates field technicians and customer communications to keep RTU systems running reliably—minimizing downtime for commercial tenants, property managers, and building operators. Thomas ensures that Denair's commitment to same-day service (usually within 4 hours for emergencies) is consistently met, and that every rooftop unit installation or repair is delivered with the smooth, professional experience Brooklyn clients expect from an Inc. 5000-recognized contractor.
Application Engineer
Ramil designs and supports HVAC systems tailored to the specific performance and efficiency needs of each Brooklyn building. Specializing in rooftop unit applications, he oversees equipment selection, technical planning, and engineering support to ensure every RTU installation delivers long-lasting reliability, meaningful energy savings, and full compliance with NYC building codes and LL97 sustainability mandates. Ramil's engineering expertise is particularly valuable for Brooklyn's dense stock of flat-roof commercial and mixed-use buildings, where precise load calculations and rooftop structural considerations are critical to a successful RTU replacement or new installation.
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.
Marketing Manager
Natalja oversees Denair HVAC's brand presence and client relationships, ensuring that building owners, property managers, and facility operators across Manhattan can easily discover and connect with the HVAC expertise they need. As Marketing Manager, she develops and executes strategies that communicate Denair's unique value—from 24/7 emergency availability to Inc. 5000 recognition—to the right audiences across New York City's competitive commercial real estate and residential markets. Her work building public relations and strategic outreach has played a significant role in Denair's growth and continued reputation as one of NYC's most trusted HVAC contractors.
Computer room air conditioning (CRAC) is precision cooling engineered specifically for IT environments like server rooms and data centers. Unlike standard HVAC, CRAC systems maintain extremely tight temperature ranges (typically 64–75°F) and humidity levels (45–55% RH), provide consistent airflow directed at heat-generating equipment, and are designed for 24/7 continuous operation with redundancy to prevent any downtime.
Talk to a Denair HVAC specialist for a free assessment tailored to your Brooklyn facility.
Denair HVAC provides computer room air conditioning services throughout Brooklyn and the entire New York metro area.
11 Regions
Service Area
24/7 Response
Emergency Availability
400+ Projects
Projects Delivered
Contact us to confirm coverage and get a free computer room cooling assessment for your facility.
Recognized as one of America's fastest-growing companies.
Full OSHA safety compliance for all job sites.
Licensed Mechanical/HVAC Contractor for NYC commercial work.
Fill out the form below and a Denair HVAC specialist will contact you to discuss your server room or data center cooling requirements, provide a site assessment, and deliver a fixed-price proposal with no surprise costs.
For immediate assistance, feel free to give us a direct call at 718-791-5074.
For immediate assistance, feel free to give us a direct call at 718-791-5074.