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VIRGINIA & MARYLAND HEATING, AIR CONDITIONING & PLUMBING
Virginia: 703-457-8676
Maryland: 301-250-1899
Donmar Heating, Cooling & Plumbing Donmar Heating, Cooling & Plumbing
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Make the Call for Comfort Your One-Stop Shop for Everything HVAC!

Rockville, MD HVAC Services

Providing Our Maryland & Virginia Customers with Comfort & Clean Air

No matter what time of the year it is, you and your family deserve to breathe clean indoor air and remain comfortable in your home. At Donmar Heating, Cooling & Plumbing, we have made it our mission for more than 30 years to provide the best HVAC services to Rockville, MD so that this clean air and total comfort can be a reality. Whether you are in need of emergency repairs, want a professional team for regular maintenance, are looking to upgrade your current system, or anything in between, count on us!

Why choose us for your HVAC needs?

  • NATE-certified technicians
  • A+ Better Business Bureau accreditation
  • Quick response and same-day services
  • Emergency HVAC services
  • Mobile fleet of vans

Regularly-Scheduled Maintenance Services

One of the services that our Rockville, MD HVAC company often stresses is maintenance and tune-ups so that your system works effectively and efficiently during the year. When you have problems with your air conditioning or heating, it can be extremely frustrating, especially if you and your family’s comfort within the home are compromised. In order to keep these issues at bay and prevent damage that could require costly repairs, it is important to have regularly scheduled maintenance performed on your system by our certified and trained professionals.

Save Money on Energy Costs!

In many cases, all that is needed are a few minor adjustments in order to maximize your system’s efficiency. This ensures that you and your family will be as comfortable as possible during every season of the year. Not only do these small, calibrated adjustments increase efficiency, they can also ensure that your monthly utility bills will be lower. No matter what season it is, you’ll be living comfortably inside your home and saving money on your energy costs as well!

Our Technicians Are Ready to Handle Jobs of Nearly Any Size!

You can rest assured that every technician on our staff has attended a number of HVAC workshops and undergone rigorous training before they are ever sent out on a service call. We know how essential it is to have the right people for the job. That is why we only hire heating and air conditioning repair technicians that are NATE-certified. Our people are prepared to handle any problem, large or small, because they have been extensively trained to do so.

We can help residents and owners of any of the following areas:

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

Helpful Resources

Don't Just Take Our Word For It!

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

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

    - Kathy
    "Donmar Company defines customer service excellence to a higher level."

    Donmar Company defines customer service excellence to a higher level.

    - Scott H.
    "Great company — replaced my furnace very efficiently and effectively. "

    Great company — replaced my furnace very efficiently and effectively.

    - Chris C.
    "They are honest and straightforward with their recommendations and always give us various options. "

    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!"

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

    - K.J.
    "Really appreciate your crew. They answered all my questions and concerns, and the work appears to be impeccable!"

    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."

    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!"

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

    - Kathleen

Creating Happy Customers Since 1990

Why We Are the #1 Trusted HVAC Company in Northern Virginia
  • We Are On Time, Every Time
  • Over 30 Years of Experience
  • Affordable Service Management Agreements
  • Quality Service with Honest Values
  • Flexible Financing Options with Approved Credit
  • Offering Free Estimates On HVAC Replacements
  • NATE Certified Technicians
  • Emergency Services 7 Days a Week