Maintain, Repair, & Install Your Potomac HVAC System

More Than Two Decades of Experience in the Field

For more than two decades, our team at Donmar Heating & Cooling has been the market leader in theHVAC industry serving the Potomac, MD area. As the top HVAC contractor, we have garnered the attention and praise of our customers, and add new customers every year due to referrals.

We adhere to our basic goal of respecting customers and offering affordable yet quality services. This has led to phenomenal growth over the years, and to our company being selected as Carrier Authorized Factory Dealer, a recognition that only a few services get.

Well-Qualified Technicians Using Up-to-Date Products & Techniques

By hiring only the best-trained technicians in the HVAC industry, you can be certain that you are getting the highest-quality service possible. Our professional technicians have cleared all background tests, as mandatory by the state, and have NATE certification, the premium credential in the industry. They are not just knowledgeable but professionally trained and experienced. Additionally, comprehensive training programs and workshops are conducted to keep them abreast about the developments occurring in the field, allowing you to benefit from up-to-date products and techniques.

Count On the Industry-Leading Experts!

As a full service heating ventilation and air conditioning service, it is our goal to offer high-quality replacements and products to keep the environment at home and office pleasant. As proud Carrier Factory authorized dealer, we are experts on the leading brands in the industry and understand the nuances of every heating and cooling system. It is essential to accurately understand how each system works and if there is an issue, we know exactly what to do after a quick evaluation.