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

HVAC Services for Sterling, VA Residents

28 Years of Providing Heating & Cooling Solutions Throughout Virginia & Maryland

As a full-service heating, ventilation, and air conditioning company in Sterling, we have all the systems you need to stay cool and comfortable throughout the year. We’re proud to be a Carrier Factory Authorized Dealer, which means we’re experts on one of the industry’s leading brands and know exactly how to make sure every system we install meets the manufacturer’s high standards.

Our HVAC experts will assess your home’s heating or cooling load then work with you to find a system that can shoulder that load at an affordable price. Call our Virginia office at 703.457.8676 or in Maryland at 301.250.1899 to schedule a service.

HVAC Services Offered at Donmar Company

Our fully licensed and certified HVAC professionals are located in Sterling and have provided assistance to over 14,000 customers in Virginia and Maryland. Our residential customers benefit from our knowledge and experience to help heat and cool the places they spend the most time. Our Sterling HVAC professionals also offer fast emergency services when you need it most.

On-Going Attention to Your HVAC Needs

Even the best systems need ongoing maintenance to keep running at peak efficiency and our affordable annual service agreements are tailor-made for just that purpose. When your air conditioner shuts down or your furnace won’t start, our repair team is ready to step in and fix the problem right away. We believe in keeping your options open, so we’ll clearly explain the costs and benefits of both repair and replacement instead of pushing for one or the other.

Contact Donmar Company, located in Sterling, VA, today for more information!

Don't Just Take Our Word for It!

See What Our Customers Have to Say About Our Service
  • “They are honest and straightforward with their recommendations and always give us various options. ”

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

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

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

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

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

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

  • “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.

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