Virginia & Maryland Heating & Air Conditioning
Make the Call for Comfort Your One-Stop Shop for Everything HVAC - In Loudon County!

HVAC Company Serving Loudoun County

The Right Fit for Your Heating & Cooling Needs

Finding the right fit for the HVAC needs you have at your Loudoun County home can sometimes be a challenge. It is important to find a company that has the necessary experience, skills, and credentials, as well as a great reputation with customers.

At Donmar Heating & Cooling, we like to believe that we are that perfect fit! With more than two decades of experience at our side, thousands of projects successfully completed, and thousands of satisfied customers, we have the excellent reputation that can help you be confident in choosing us.

Why choose us for your Loudoun County HVAC needs?

  • We are a Carrier Factory Authorized Dealer, and have won the Carrier Presidential Award for both 2014 and 2015.
  • Our team of technicians are all NATE-certified, licensed, and insured.
  • Our company has very low technician turnover, and you will usually see the same people year after year keeping your equipment in top shape.
  • We offer a comprehensive range of services to address nearly any issue.
  • Customers are always our top priority, and we will do everything possible to ensure your complete satisfaction.
  • Free estimates and special financing options are available with approved credit.

Your Satisfaction Is Our Top Priority!

Because we have so much experience in the field, there truly is nothing in the residential HVAC business that we haven't seen or dealt with. Our technicians have the background and experience to effectively handle nearly any issue that may arise, as we keep them constantly up-to-date on the latest products and techniques.

To sum it up, you can count on us 100% for the customer-centered and professional service that you need and deserve. We guarantee that, at the end of our repairs, maintenance, or installation, you will be completely satisfied with the result.

Call us today in Virginia at 703.457.8676 or in Maryland at 301.250.1899 to request your HVAC service.

Don't Just Take Our Word for It!

See What Our Customers Have to Say About Our Service
  • “This company is very attentive to the customer and respond to their concerns quickly.”

    Natalie M.
  • “Donmar Company defines customer service excellence to a higher level.”

    Scott H.
  • “It is so hard to find a trustworthy AC repair company and I think i have finally found it.”

    Rodrigo
  • “They are honest and straightforward with their recommendations and always give us various options. ”

    Samia K.
  • “Your customer service is outstanding and everyone that I spoke to or met in person speaks to the nature of your company.”

    Kathy
  • “Great company — replaced my furnace very efficiently and effectively. ”

    Chris C.
  • “Really appreciate your crew. They answered all my questions and concerns, and the work appears to be impeccable!”

    Jeffrey N.
  • “We've been pleased with the units, but its your employees that have made the real impression - they've been uniformly fantastic!”

    Kathleen
  • “I am thankful for Paul’s service and HIGHLY RECOMMEND Donmar Company to anyone with an HVAC issue!”

    K.J.

Creating Happy Customers Since 1990

Why We Are the #1 Trusted HVAC Company in Northern Virginia
  • Emergency HVAC Services 7 Days a Week

  • NATE Certified Technicians

  • Offering Free Estimates On Replacements

  • Flexible Financing Options

  • Quality Service With Honest Values

  • Affordable Service Management Agreements

  • Over 25 Years of HVAC Experience

  • We Are On Time, Every Time