Virginia & Maryland Heating, Air Conditioning & Plumbing
Emergency Service Available!
Virginia:703.457.8676
Maryland:301.250.1899

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Heating, Air Conditioning & Plumbing in Sterling

Serving Homeowners Throughout Northern Virginia & Maryland Since 1990

At Donmar Company Heating & Cooling, we have always been committed to giving our customers the best heating, AC & plumbing service, always tailoring our approach based on your home, your budget, and your needs. Our Sterling HVAC technicians and plumbing experts combine excellent workmanship with a steadfast devotion to total customer satisfaction to create consistently exceptional results. That’s what we call the Donmar Company difference!

When it comes to your home, we strive to help create a controlled climate year-round. We only carry the industry’s best technologies and our NATE Certified technicians are fully trained in the most cutting-edge installation practices. We’ve created a 30-year legacy of customer service and satisfaction, always providing the top-notch service you have come to expect from our team.

You Know Exactly Who is on Their Way & When!

In order to provide you with peace of mind, we utilize technology that allows our customers to see who's coming and their exact ETA, all with GPS tracking! When you set up a service call, you'll receive a notification of which technician will be helping you (including a photo of them). There's never any guesswork and you won't be left in the dark on which technician will be arriving to your home and when, because it is all displayed to you in real time.

Creating Happy Customers Since 1990

#1 Trusted HVAC & Plumbing Company in Northern Virginia

Finding an HVAC and plumbing company you can trust can be pretty difficult. That is why Donmar Heating, Cooling & Plumbing is committed to offering prompt, affordable service on your schedule. We proudly offer a range of flat-rate fees and financing options with approved credit. Our services are second to none. We proudly feature energy efficient HVAC systems and water heaters that are friendly on the environment, as well as your monthly energy bills.

Our plumbers and technicians have years of experience and can determine a solution based on your needs, your home’s specifications, and most importantly, your budget. We know that you want a comfortable home all year long, so we make sure every repair or installation is executed to your complete satisfaction.

It's more than just about comfort –
it’s about having peace of mind.

  • Emergency Services 7 Days a Week
  • NATE Certified Technicians
  • Offering Free Estimates On HVAC Replacements
  • Flexible Financing Options
  • Quality Service With Honest Values
  • Affordable Service Management Agreements
  • Over 30 Years of Experience
  • We Are On Time, Every Time

Our Commitment to Excellence

Online Specials
0% Financing

0% financing on approved credit up to 60 months on select Carrier systems.

Don't Just Take Our Word For It!

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

    Samia K.

  • “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

  • “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.

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

    Scott H.

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

    K.J.

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

    Natalie M.

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

    Jeffrey N.

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