Your Comfort, Our Commitment

Donmar Heating, Cooling & Plumbing

5.0

Over 1000 5-Star Reviews

Awards That Set Us Apart

    Serving Ashburn and beyond Emergency Air Conditioning Repair Ashburn

    If your air conditioner isn’t working, Donmar Heating, Cooling & Plumbing stands ready to spring into action. Our emergency AC repair technicians know how to quickly troubleshoot and fix all types of cooling issues, from minor problems to complete breakdowns.

    Give Donmar Heating, Cooling & Plumbing a call for emergency air conditioning repairs if your air conditioner smells odd or is making strange noises, your AC is running, but warm air is coming out, your air conditioner won’t turn on at all, your air conditioner is leaking, or you're having any similar issue. With an emphasis on quality and efficiency, Donmar Heating, Cooling & Plumbing ensures that emergency AC repairs are handled with the utmost care, restoring your comfort swiftly.

    Facing an AC crisis? Call (703) 457-8676 now for Donmar Heating, Cooling & Plumbing’s emergency air conditioning repair services—because comfort can't wait.

    Ashburn Emergency AC Repair
    Call for More Information Today!
    703-457-8676
    Reviews That Speak for Themselves
    • C
      "Amazing service and pricing"
      Amazing service and pricing by DonMar
      Christopher Cunningham
    • C
      "Highly Recommend"
      Fast scheduling and questions answered honestly and promptly by the business owner.
      Christian Demeter
    • R
      "Competent and Professional Service"
      As always, competent and professional service.
      Rolf Mueller
    • E
      "Technicians Were Polite and Efficient"
      I appreciate being sent a picture of the technician and a short bio with the appointment reminder.
      Ellen Liberman
    • T
      "I Would Recommend Them to Anyone"
      Their work is incredibly neat and top notch. I would recommend them to anyone for any HVAC work.
      Tena -
    • R
      "Nice, Professional, and Clear"
      Everyone who has come out has been nice, professional, and able to explain what they are doing and why!
      Roberta Fisher
    • K
      "Chris has been our tech for years!"
      He is always friendly, explains what he’s doing, and he is just an all-around good guy!
      Kelley Churgin
    • P
      "Carlos and his crew went above and beyond"
      Carlos cut me a piece of their own duct, trimmed and crimped it, and it fit perfectly.
      Paul Hoisington
    • D
      "Thorough, Professional, and Friendly"
      As always, technician Abrahim was thorough, professional, and friendly.
      David Felt
    • A
      "Arrived Right on Time"
      Arrived right on time and provided efficient service for a reasonable price.
      A. E.S.
    • P
      "Exceptional service and quality"
      Here is an HVAC company with exceptional service, attention to quality and easy to deal with.
      Peter Clarkson
    • A
      "Very knowledgeable and efficient"
      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
    • R
      "Everything I Want in an HVAC Contractor"
      Polite, professional, responsive, and informative.
      Russ Shipman
    • R
      "Everything I Want in an HVAC Contractor"
      Polite, professional, responsive, and informative.
      Russ Shipman
    • 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
    • J
      "Every member of the crew was superb"
      The work Donmar did was not simply a replacement; it was significant upgrades for the equipment, as well as correcting poor design.
      Jack S
    • A
      "The system looks great"
      The system looks great… temps in the house were toasty warm in an hour after installation.
      Arellia Hinton
    • A
      "The System Looks Great"
      The system looks great; temps in the house were toasty warm in an hour after installation.
      Arellia Hinton
    • S
      "Mayer was excellent"
      He was very professional, knowledgeable, and very quick to resolve the issue.
      Seung
    • R
      "Very Diligent and Knowledgeable"
      Chris was very diligent and clearly knew what he was doing.
      Robert Tilton
    • S
      "Mayer Was Excellent"
      He was very professional, knowledgeable, and very quick to resolve the issue.
      Seung
    • R
      "Very diligent and knowledgeable"
      Chris was very diligent and clearly knew what he was doing.
      Robert Tilton
    • m
      "Prompt emergency service"
      Very knowledgeable and experienced technicians.
      m g
    • R
      "A Great Relief for Me"
      Donmar sent someone out immediately who fixed it quickly and dealt with my difficult sister in a very understanding way.
      Ronald Lee
    • R
      "A great relief for me"
      Donmar sent someone out immediately who fixed it quickly and dealt with my difficult sister in a very understanding way.
      Ronald Lee
    • m
      "Prompt Emergency Service"
      Very knowledgeable and experienced technicians.
      m g
    • C
      "Glad I switched to DonMar!"
      The technician, Chris, was very professional, thorough, and personable.
      Cindy Dall
    Amazing service and pricing
    Amazing service and pricing by DonMar on a new heat pump.
    Christopher Cunningham
    Highly Recommend
    Fast scheduling and questions answered honestly and promptly by the business owner. Prompt arrival of technician Javier. Professional diagnostics with the latest equipment. Repairs made with caveats as refrigerant leaks in a 26-year-old system may reoccur. Honest appraisal. Highly recommend.
    Christian Demeter
    Competent and Professional Service
    As always, competent and professional service. Thank you, Jorge. Communication by Donmar is first class.
    Rolf Mueller
    Technicians Were Polite and Efficient
    I appreciate being sent a picture of the technician and a short bio with the appointment reminder. The technicians were polite and worked efficiently. In addition, I could always get in touch with Don if I had questions. I was kept informed throughout the installation.
    Ellen Liberman
    I Would Recommend Them to Anyone
    I had never heard of Donmar before finding them on Carrier’s list of installers. They are rated #1 in customer satisfaction, and I have now become one of those customers. These guys had a 2-day job here with replacing a new system and new ductwork. I had McCrea come here first, as they sold me my first unit. Donmar, for the same scope of work, came in THOUSANDS less than McCrea. Michael from Donmar also uncovered my air duct issue. Changing this would ensure the new machine would work as it should and not have the issue my previous system had. Manuel and Edgardo were here both days, and they were awesome. Their work is incredibly neat and top notch. I would recommend them to anyone for any HVAC work. Honestly, if you want professional work, these are the guys to give it to you.
    Tena -
    Nice, Professional, and Clear
    I have had a maintenance contract with Donmar for years. Everyone who has come out has been nice, professional, and able to explain what they are doing and why!
    Roberta Fisher
    Chris has been our tech for years!
    Chris has been our tech for years! He’s great! He is always friendly, explains what he’s doing, and he is just an all-around good guy!
    Kelley Churgin
    Carlos and his crew went above and beyond
    I got a new HVAC system from Donmar yesterday. Carlos and his crew went above and beyond - they worked in a very confined space and moved a washer/dryer and shelf and put them back. In addition - I have to call this out - Carlos saw that whoever installed my dryer did not do a good job of connecting the duct because it had FALLEN OFF. He let me know and I got a few things from Home Depot to repair it. I got a wrong part and he saw I was struggling. Carlos cut me a piece of their own duct, trimmed and crimped it, and it fit perfectly and I was able to get the duct connected back. It was not part of his job, but I really appreciated that. Kudos to Carlos!
    Paul Hoisington
    Thorough, Professional, and Friendly
    As always, technician Abrahim was thorough, professional, and friendly. He checked our systems and gave us a detailed report.
    David Felt
    Arrived Right on Time
    Arrived right on time, provided efficient service for a reasonable price, had service appointment shortly after requested.
    A. E.S.
    Exceptional service and quality
    Here is an HVAC company with exceptional service, attention to quality, and easy to deal with. Donmar is really great. I needed a complete replacement of 2 complex HVAC systems. Their quote was thorough, transparent with competitive pricing. They were flexible on meeting some changes and guided me to the optimal solution. They started on schedule and laid out a day-by-day plan. Edgar and Gus were really professional and pleasant and worked hard over several days to rebuild our systems. They tested the entire system and walked me through all the features and settings. Everything was finished to spec. I met the owner Don, and he iterated the support they would give us looking after and servicing our equipment. We are delighted with the new system and are so pleased that we had Donmar do this work for us. If you are looking for a competitive, professional, and knowledgeable HVAC company, go to Donmar.
    Peter Clarkson
    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
    Everything I Want in an HVAC Contractor
    Recent furnace replacement. Everything I want in an HVAC contractor... polite, professional, responsive, and informative. Reacted quickly to our problem, clearly explained quoted options and prices, was on time for the work, completed work within schedule, and left the space cleaner than they started.
    Russ Shipman
    Everything I Want in an HVAC Contractor
    Recent furnace replacement. Everything I want in an HVAC contractor... polite, professional, responsive, and informative. Reacted quickly to our problem, clearly explained quoted options and prices, was on time for the work, completed work within schedule, and left the space cleaner than they started.
    Russ Shipman
    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
    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
    The system looks great
    Mr. Edgar and his team arrived on time and ready to work. All I heard was hums and laughter in sub-degree temps. The system looks great. Temps in the house were toasty warm in an hour after installation. I was very concerned about this major investment, and it worked out great. Thank you, Donmar. Arellia, Silver Spring, MD.
    Arellia Hinton
    The System Looks Great
    Mr. Edgar and his team arrived on time and ready to work. All I heard was hums and laughter in sub-degree temps. The system looks great; temps in the house were toasty warm in an hour after installation. I was very concerned about this major investment and it worked out great. Thank you, Donmar. Arellia, Silver Spring, MD.
    Arellia Hinton
    Mayer was excellent
    Mayer was excellent. He was very professional, knowledgeable, and very quick to resolve the issue.
    Seung
    Very Diligent and Knowledgeable
    Chris was very diligent and clearly knew what he was doing. He did his very best to restore the operation of our furnace.
    Robert Tilton
    Mayer Was Excellent
    Mayer was excellent. He was very professional, knowledgeable, and very quick to resolve the issue.
    Seung
    Very diligent and knowledgeable
    Chris was very diligent and clearly knew what he was doing. He did his very best to restore the operation of our furnace.
    Robert Tilton
    Prompt emergency service
    Prompt emergency service. Very knowledgeable and experienced technicians. Thank you, DonMar.
    m g
    A Great Relief for Me
    I called from California to get help for my 86-year-old sister in Falls Church, VA, whose furnace failed during a terrible snowstorm with very cold temps. Donmar sent someone out immediately who fixed it quickly and dealt with my difficult sister in a very understanding way. A great relief for me.
    Ronald Lee
    A great relief for me
    I called from California to get help for my 86-year-old sister in Falls Church, VA, whose furnace failed during a terrible snowstorm with very cold temps. Donmar sent someone out immediately who fixed it quickly and dealt with my difficult sister in a very understanding way. A great relief for me.
    Ronald Lee
    Prompt Emergency Service
    Prompt emergency service. Very knowledgeable and experienced technicians. Thank you, Donmar.
    m g
    Glad I switched to DonMar!
    I used DonMar for the first time, after a recommendation from a neighbor. The technician, Chris, was very professional, thorough, and personable. Their annual maintenance contract price is very reasonable. Glad I switched to DonMar!
    Cindy Dall
    Current Donmar Company Promotions
    • Donmar Heating, Cooling & Plumbing Donmar Heating, Cooling & Plumbing
      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

      Valid Sep 17, 2025 - Sep 30, 2026 Download
    • Donmar Heating, Cooling & Plumbing Donmar Heating, Cooling & Plumbing
      Virginia

      $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

      Valid Sep 17, 2025 - Sep 30, 2026 Download
    • Donmar Heating, Cooling & Plumbing Donmar Heating, Cooling & Plumbing
      Virginia Washington Gas Rebates

      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

      Valid Sep 17, 2025 - Sep 30, 2026 Download
    Why Choose 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
    • Trusted for Over 30 Years

      Providing expert HVAC services since 1990.

    • Energy Efficiency Focus

      Save money with our green technology solutions.

    • Real-Time Service Updates

      Track your technician’s arrival with GPS tracking.

    • Flexible Financing Options

      Affordable upgrades with flexible financing solutions.

    Answers to Your Top Questions
    • What qualifies as an emergency AC repair?
      Emergency AC repair involves situations where your air conditioning system fails to provide adequate cooling, leaks refrigerant, or encounters electrical issues that could pose safety risks. If your AC stops working during extreme weather conditions, it’s likely considered an emergency.
    • How can I prevent future AC emergencies?
      Regular maintenance is key to preventing AC emergencies. We recommend scheduling routine check-ups to ensure your system functions optimally year-round. This helps identify potential issues early and prolongs the life of your unit.
    • How do I choose the right emergency AC repair service?
      Choose a repair service with a solid reputation, qualified technicians, and responsive service. Look for reviews and testimonials, and ensure they offer prompt, 24/7 availability. We pride ourselves on delivering all these qualities to our customers.
    • Do you service all AC brands in emergencies?
      Our skilled technicians are trained to handle emergency repairs for a wide range of AC brands and models. Regardless of the make and model of your system, we are equipped to diagnose and fix problems efficiently.
    Areas We Serve
    • Broadlands
    • Loudoun County
    • Ashburn
    • Sterling
    • Leesburg
    • Reston
    • Herndon
    • Dulles Town Center
    • Countryside
    • Sugarland Run
    • Cascades
    • South Riding
    Call Us Today! 703-457-8676
    or Contact
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