Virginia & Maryland Heating, Air Conditioning & Plumbing
Make the Call for Comfort Your One-Stop Shop for Everything HVAC - In Manassas, VA!

Manassas, VA Heating & AC Contractors

A Leading Name in the Industry for More Than 30 Years

If you have been looking for a reliable and quality HVAC service in Manassas, VA, our team at Donmar Heating & Cooling would be glad to be of assistance. A leading name in the heating and cooling in the area, we have been in business for over 30 years, and care greatly about our customers. Whether you are in need of repair, maintenance, replacement, installation, or anything in between, turn to us for the expertise and customer-centric focus that you deserve!

Our services can help you:

  • Save money on energy bills
  • Clean up the quality of your indoor air
  • Keep comfortable in your home
  • Prevent major breakdowns and expensive repairs in the future

Timely, Helpful, & Customer-Oriented HVAC Technicians

Each visit by our professional technicians is backed by experience of more than 30 years. As an accredited Better Business Bureau service, we have been delivering quality and customer satisfaction since 1988 all over Manassas and the surrounding cities.

Our technicians are time-bound, uniformed and have strong communication skills to ensure you are updated on all steps throughout the project. Whether it's proper installation or just a minor repair at home, they offer the same level of courtesy and professionalism when working.

Twice-a-Year Preventive Maintenance Packages

With twice a year complete and comprehensive cleaning and maintenance, in spring and at the start of winters, we make sure both the heating and cooling units at your Manassas, VA location are in optimized working condition. Our preventive maintenance packages and deals are low-priced and, depending upon the services you need, can even be customized.

After all, it is about investing to protect your HVAC system, your safety, and comfort during the winters and summers. If you need additional services for air purifiers and boilers, heaters and furnace, we can club them with the package you opt for.

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

Don't Just Take Our Word for It!

See What Our Customers Have to Say About Our Service
  • “We've been pleased with the units, but its your employees that have made the real impression - they've been uniformly fantastic!”

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

    Samia K.
  • “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!”

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

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

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

    Natalie M.
  • “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.”


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 with Approved Credit

  • Quality Service With Honest Values

  • Affordable Service Management Agreements

  • Over 30 Years of HVAC Experience

  • We Are On Time, Every Time