About Donmar Heating, Cooling & Plumbing
HVAC Professionals & Plumbers Serving Virginia & Maryland
For over 30 years and counting, Donmar Heating, Cooling & Plumbing has been a top HVAC contractor and home to experienced plumbers in both Virginia and Maryland. We’ve provided service to over 19,500 customers over the years, and our business continues to grow primarily through referrals from satisfied homeowners. Our testimonials show that our customers really do like our work.
Our business model is simple:
- Provide excellent service at an affordable price
- Treat every customer with respect
Our high standards have resulted in recognition from Carrier, and we are proud to be one of their distinguished factory-authorized dealers because every home’s heating and cooling needs are unique, we believe in presenting all available options to customers and finding the right comfort solution for their unique needs.
Our HVAC Technicians & Plumbers
Our business is built on professional-quality service, and it takes top-notch technicians to meet our high standards. We hire only trained and licensed professionals who pass full background checks. As a Carrier Factory Authorized Dealer, the majority of our technicians must hold NATE certification, the HVAC industry’s premier credential. NATE-certified contractors are simply the best at what they do, and we supplement their extensive knowledge with ongoing professional development seminars and workshops. Additionally, our plumbers are highly experienced and know how to get the job done right the first time. You can expect them to show up on time and to leave your space cleaner than when they arrived.
Because our employees are so vital to our business, we believe in treating them like family. Most of our technicians have been with us for seven or more years. Our management team promotes a drug-free, safe working environment and remains committed to training and caring for all of our staff.
Providers of Affordable Green Technologies
We’re big believers in green technology, energy efficiency, and clean air. Since the HVAC and plumbing industry is constantly working to make more efficient systems, we offer plenty of discounts and specials to help our friends and neighbors upgrade at a price they can afford. Our friendly customer service representatives are always ready to discuss your service needs and recommend the best course of action for your home and family.
We can help residents and owners of any of the following areas:
- Alexandria, VA
- Arlington, VA
- Bethesda, MD
- Bristow, VA
- Camp Spring, MD
- Chantilly, VA
- Fairfax, VA
- Falls Church, VA
- Forestville, MD
- Gaithersburg, MD
- Great Falls, VA
- Leesburg, VA
- Manassas, VA
- Oxon Hill, MD
- Potomac, MD
- Reston, VA
- Rockville, MD
- Silver Spring, MD
- Sterling, VA
- Temple Hills, MD
- Vienna, VA
- Woodbridge, VA
- Montgomery County
- Prince George’s County
- Prince William County
- Loudoun County
Contact our heating, air conditioning, and plumbing professionals to find out how we can help you breathe easier.
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.- Scott H.
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.- Samia K.
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!- 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