Denair HVAC Company

Right after the layoff of the principal, who has worked for the HVAC service company for 7 years, Denair HVAC was established in March of 2007 with 1 man and a bead-up used truck. The progress was obvious when the all-in-one truck headquarters had moved to the apartment living room “office” where blueprints had been rolled out all over the floor. Twelve years later, the organization was recognized by the Inc. 5000 as one of America’s fastest-growing and most successful companies. With the designed company’s operation transparency, we have attracted the HVAC industry professionals who have become a strong part of our leadership team taking the company to the next level year after year. Our success is driven by honesty, commitment, enthusiasm, and desire to meet the needs of our clients!


To deliver high quality and affordable service to the New York Metro Area customers and ensure no one is left in the heat or cold.


Denair HVAC Company has well established relationships with leading HVAC equipment manufacturers on the global arena. We have our hands on modern trends and latest technological innovations. We will help you to make right decision choosing HVAC equipment that will meet your needs.


Denair HVAC Company complies with all local and state regulations being certified with required government agencies. High quality of professional service is guaranteed.
Mechanical Service Contractors of America is the nation’s leading trade association representing heating, ventilation, air conditioning, and refrigeration service contractors. MSCA certified, we offer unsurpassed support to our customers, quality workmanship, and safe & reliable service.
To operate legally in New York City, a Home Improvement License issued by the New York City Department of Consumer Affairs, is a must-have for every contractor.
NCI is the world leader in HVAC System Performance training and Air Balancing. Being certified with Commercial Air Balancing Certificate, our technicians are equipped with the knowledge and tools required for balancing commercial HVAC systems.
Residential Air Balancing Certificate enhances our professionalism in reducing system performance issues and energy consumption while improving comfort, IAQ, and customer satisfaction.
Certificate of Fitness for Torch Use of Flammable Gases (G-60) – we are certified to use an oxygen-fuel torch for welding, cutting, and other hot work operations Fire Guard for Torch Operations and Construction Site (F-60) Fire Safety is a heavily regulated area in New York, being certified by FDNY, we can meet any project requirement.
City MULTI Certification proves our deep knowledge of properly applying, installing, commissioning, and troubleshooting systems
Daikin Certification provides our technicians with product and service expertise.
Construction Safety & Health Certificate equipped us with the knowledge on recognition, avoidance, and prevention of safety and health hazards at the workplace.


We are fully insured NYC HVAC Company in accordance with New York construction industry requirements:

  1. Commercial General Liability
    • Each Occurrence – $ 2,000,000
    • General Aggregate – $ 4,000,000
  2. Workers Compensation – $ 1,000,000
  3. Umbrella Liability – $ 5,000,000
  4. Automobile Liability – $ 1,000,000



Owner & Project Manager
Dennis founded Denair HVAC Company in 2007. He has over 17 years of experience in HVAC industry and holds significant expertise in all the aspect of the business. Leading company’s strategic vision, he has raised enterprise from zero to the level of 2 million in revenue within 5 years.


Operating Manager
Aleksandr serves as Operation Manager at Denair HVAC Company. In this capacity, he oversees performance, productivity, efficiency and profitability of the entire organization and is responsible for thousands of clients’ accounts and control over employees and operations.


Lena has over 35 years of industry experience, ranging from construction to real estate to HVAC. She handles all aspects of accounting, finance, budgeting, forecasting, and insurances for Denair and we couldn’t be luckier.


Marketing Manager
Natalja serves as marketing manager at Denair HVAC Company. In this capacity, she oversees the building of relationships with prospective clients and developing the firm’s brand. She is responsible for maintaining public relations and development of marketing strategies.


Farrukh has been with Denair HVAC Company since 2010. He is an experienced estimator who is responsible for bid proposal preparation in a comprehensive and timely manner, tracking opportunities with vendors, subcontractors and customers.


Sales Manager
Anastasiya serves as sales manager. In this capacity, she is responsible for leading Denair’s new business acquisitions by identifying market opportunities, developing strategic partnerships. Anastasiya is in charge of development and implementation of sales and growth strategies.


Assistant Operating Manager
Petru has joined our team recently, but has already made significant input supporting and assisting operation manager. He is in charge of controlling every day operations, coordination with the different departments to ensure that all plans are in action and all tasks executed are of the best quality.


Dennis does excellent work; and, when his people are finished with a job, you can eat off the floor in the Mechanical room.  His team will be able to address any problem you have with commercial HVAC system.

Willian G. Holy

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.

Amanda Ron

I was able to upgrade my cooling towers through the help of Denair and I did love their Service rendered, Wonderful Experience.

Ken Lucky

Value Focused HVAC Provider

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 inefficient system I had replaced 10 years ago. Denair delivers customer-focused service, valuable recommendations to improve HVAC efficiency, great quality work, all at very competitive prices while ensuring customer satisfaction. Highly recommended!

John Green

Reliable, ethical, professional
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!

Al Neese RAM-ARM
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