Ibrahim is very knowledgeable, courteous, and gets the job done effectively and efficiently.
Avi Bender
S"Courteous, Friendly, and On Time"
They were courteous, friendly, and fully explained the work to be done.
Susan Edwards
D"Sean did a great job as always"
He kept me informed all the way through the process.
Dave Teal
D"Sean did a great job as always"
He kept me informed all the way through the process.
Dave Teal
J"Every Member of the Crew Was Superb"
The main technician, Edgar, and every member of the crew were absolutely superb.
Jack S
S"Mayer was excellent"
He was very professional, knowledgeable, and very quick to resolve the issue.
Seung
Very knowledgeable and efficient
Ibrahim is very knowledgeable, courteous, and gets the job done effectively and efficiently. Glad I worked with this company.
Avi Bender
Courteous, Friendly, and On Time
Manuel and Edgar performed the service on my HVAC unit. They were courteous, friendly, and fully explained the work to be done. They came at the start of the scheduled window for the service, alerted me ahead of time when they would arrive, and completed the work within the 4-hour time that had been estimated. Everything was cleaned up at the end of the service.
Susan Edwards
Sean did a great job as always
Sean did a great job as always. He kept me informed all the way through the process. I like how Don Mar contacts me when it’s time for a spring and fall checkup. I like the new plumber service too.
Dave Teal
Sean did a great job as always
Sean did a great job as always. He kept me informed all the way through the process. I like how Donmar contacts me when it’s time for a spring and fall checkup. I like the new plumber service too.
Dave Teal
Every Member of the Crew Was Superb
The main technician, Edgar, and every member of the crew were absolutely superb. I had done a great deal of research, so I asked many technical questions. We are the original owners of this 2011 townhouse, and I watched it be built over several months. The work Donmar did was not simply a replacement; it was significant upgrades for the equipment, as well as correcting poor design and installation by the home builder. In every case, the installations/repairs were first rate.
Jack S
Mayer was excellent
Mayer was excellent. He was very professional, knowledgeable, and very quick to resolve the issue.
Serving Rockville and beyond
HVAC Maintenance Rockville
With Donmar Heating, Cooling & Plumbing's HVAC maintenance services, you’re not just preparing your central air system for the summer or winter—you’re setting the stage for year-round comfort. Our detailed HVAC maintenance services are designed to identify and fix minor issues before they lead to major breakdowns, ensuring your system is in peak condition when you need it most. From thorough cleaning to performance optimization, Donmar Heating, Cooling & Plumbing covers every aspect of HVAC maintenance.
When you schedule HVAC maintenance with Donmar Heating, Cooling & Plumbing, you can experience peace of mind in knowing you’re protecting the efficiency and longevity of your heating, cooling, and ventilation systems. Routine maintenance can even protect you from the hassle and expense of an unexpected malfunction!
Call (703) 457-8676 now to book a maintenance visit with Donmar Heating, Cooling & Plumbing.
At Donmar Heating, Cooling & Plumbing, we deliver dependable HVAC and plumbing services across Virginia and Maryland. With over 30 years of experience, our team of NATE-certified technicians is committed to enhancing your home's comfort and energy efficiency. We focus on customer satisfaction through reliable service and green technology.
Why Choose Us:
30+ years of trusted service in Virginia and Maryland
NATE-certified technicians committed to quality
Carrier Factory Authorized Dealer
Transparent real-time updates with GPS tracking
Flexible financing and discounts for affordable upgrades
Emphasis on energy efficiency and green technology
Track your technician’s arrival with GPS tracking.
Flexible Financing Options
Affordable upgrades with flexible financing solutions.
Current Donmar Company Promotions
Virginia
Columbia Gas Rebates
Paid in the form of check 6-8 weeks after installation. Donmar submits application on your behalf. $300 for Gas Furnaces with a minimum of 90% AFUE $400 for Gas Furnaces with a minimum of 95% AFUE $500 for Gas Furnaces with a minimum of 97% AFUE
$2,600 for Hybrid/Dual Fuel (Gas Furnace and Heat Pump) Systems with a minimum
furnace AFUE of 95%, 15.2 SEER2 and 7.5 HSPF2 $2,000 for replacement of Heat Pump and Evaporator Coil on a hybrid/dual fuel system
with a minimum of 15.2 SEER2 and 7.5 HSPF
Paid in the form of a check 6-8 weeks after installation. Donmar submits application on your behalf. $500 For Gas Furnaces with a minimum of 95.1% AFUEZ $700 For Gas Furnaces with a minimum of 97% AFUE
$400 for Energy Star Certified Tankless Wat
Virginia Columbia Gas Rebates