Virginia & Maryland Heating, Air Conditioning & Plumbing
Experiencing HVAC Issues? NATE Certified and Dedicated to Your Safety and Comfort

Expert Sterling Heater Repair Services

Call Donmar Heating & Cooling for a Quote

Having reliable heating in your home is not just about indoor air quality and comfort – it’s also about safety. Our NATE Certified heating experts can diagnose any type of issue with your furnace, heat pump, boiler, or any other type of equipment. Whether your unit has stopped due to cold temperatures, is running inefficiently, or is heating inconsistently, we can address the issue and help resolve the problem right away.

What makes our Sterling heating repair team the right choice for homeowners in Northern Virginia and Maryland:

Choose a Carrier Factory Authorized Dealer!

We’re proud to be a Carrier Factory Authorized Dealer, which means we’ve consistently met Carrier’s high standards of technical excellence and unwavering customer satisfaction. However, we proudly service all makes and models as well. Our Sterling heating repair technicians are highly-trained and fully-qualified to service and repair all heating equipment. As one of our area’s top HVAC contractors, we are committed to maintaining the same high level of service that earned us the reputation we’re proud of and the recognition from manufacturers like Carrier.

Offering Transparent Prices So You Always Know What You’re Paying for

In some rare cases, constant repair costs than actually end up exceeding the cost of replacement. As heating repair technicians in Sterling, we are upfront and honest about our prices. Our technicians always work on flat rates for your peace of mind. Because we pride ourselves on transparency and customer satisfaction, we will be honest and transparent throughout our diagnosis of your heating issue. If a unit replacement would be more cost-conscious for your current situation, we will inform you of all options we can possibly take to remedy your indoor air problem.

We have a wide range of repair services, including:

Have a heating emergency? We proudly offer emergency services, seven days a week! We’re available to come out to your home and assess the situation, hassle-free, and even get it fixed so you can go back to life as normal. When something goes wrong, make sure you have a team who can be there for you, including in the middle of the night or on weekends or holidays.

Contact Donmar Heating and Cooling at (703) 457-8676 today! We offer maintenance agreements and Special Financing Options with Approved Credit.

Don't Just Take Our Word for It!

See What Our Customers Have to Say About Our Service
  • “Really appreciate your crew. They answered all my questions and concerns, and the work appears to be impeccable!”

    Jeffrey N.
  • “This company is very attentive to the customer and respond to their concerns quickly.”

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

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

    K.J.
  • “Donmar Company defines customer service excellence to a higher level.”

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

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

    Kathy

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