Donmar Heating, Cooling & Plumbing
Donmar Heating, Cooling & Plumbing is a HVAC provider serving Rockville, MD. Rated 4.9★ with 115 Google reviews. See services, review signals, and request a quote.
HVACRockville, MD
On this page
Company overview
- TradeHVAC
- Service areaRockville, MD
- Google rating4.9★ (115 reviews)
- Phone(301) 250-1899
- Address1106 Taft St, Rockville, MD 20850, USA
Photos
Photos from Donmar Heating, Cooling & Plumbing
What customers say
“We have positive working relationship with Donmar heating and cooling . They were punctual and detail oriented professionals, answered all questions timely and installed the system within 4 days from…”
“Donmar is a great company and the tech Chris was fantastic. They have your best interest at heart and are looking for ways to save you money instead of trying to upsell on a brand new system. I recomm…”
“Kien performed the maintenance in under 30 minutes. Gave me recommendations but didn’t push for extra services. He gave me honest feedback and answered all my questions as a new home owner. Very happy…”
“Donmar was wonderful. The receptionist on the phone was professional and thorough. Javier came out quickly to fix my A/C. Apparently I shorted it out replacing the thermostat myself (not my fault thou…”
“This morning, Gordon and Gus replaced our 20-year-old failed water heater in our crawl space. They communicated with me during the installation, answering all of my questions. They are true profession…”
Key highlights
Strengths
- Highly rated (4.9★ average)
- Large review volume (115 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Donmar Heating, Cooling & Plumbing offer?
Donmar Heating, Cooling & Plumbing provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Rockville, MD.
What is Donmar Heating, Cooling & Plumbing's rating?
Donmar Heating, Cooling & Plumbing has a 4.9 out of 5 star rating based on 115 Google reviews.
Is this company licensed in Maryland?
All listed providers have a verified Maryland contractor license at time of publication. You can verify on the Maryland Department of Labor — Board of Heating, Ventilation, Air-Conditioning, and Refrigeration Contractors (HVACR Board) lookup at https://www.dllr.state.md.us/cgi-bin/ElectronicLicensing/OP_Search/OP_search.cgi?calling_app=HVAC.
Does Donmar Heating, Cooling & Plumbing offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Maryland Department of Labor — Board of Heating, Ventilation, Air-Conditioning, and Refrigeration Contractors (HVACR Board) · Company data: verified business records + Google Business profile
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