Virginia & Maryland Heating & Air Conditioning

Heating & Air Conditioning Services in Sterling, VA

Serving Homeowners Throughout Northern Virginia & Maryland Since 1990

At Donmar Company Heating & Cooling, we have always been committed to giving our customers the best HVAC services. We tailor our services to your home, your budget, and your needs. Our Sterling heating and AC 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!

From brand new installations of a heating unit or routine maintenance for an air conditioning system, we strive to help create a controlled climate in your home 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 28-year legacy of customer service and satisfaction and we aim to provide the top-notch service you expect from your HVAC provider.

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

Why We Are the #1 Trusted HVAC Company in Northern Virginia

Finding an HVAC company you can trust can be pretty difficult. That is why Donmar Company Heating & Cooling 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 and we proudly feature energy efficient heating and cooling systems that are friendly on the environment, as well as your monthly energy bills.

Our NATE Certified 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.

Indoor air quality is more than comfort –
it’s a peace of mind.

  • 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

Our Commitment to Excellence

Online Specials
50 Any Service Call Over $200

Don't Just Take Our Word For It!

  • “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.

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


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


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


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


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

    Scott H.

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

    Samia K.

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

    Chris C.

Request a Service Today!

We're Prepared to Handle Any HVAC Issue
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