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Mount Airy HVAC Company

Heating & AC Experts Serving Frederick County, Montgomery County & Beyond

One Hour Air Conditioning & Heating® of Mount Airy has a long history serving the residents of Mount Airy, Frederick, Gaithersburg, and throughout the Washington DC area. We’ve been in business since 1949 and turned our focus to HVAC service in 1993. Our team has the same goal that we started with: making customers happy and comfortable through excellent heating and AC service. Every member of our team undergoes extensive training and is well equipped to solve any HVAC problem. Our vehicles are so well-stocked with parts that we can finish most jobs in one visit!

Why Maryland Customers Love Our HVAC Services

Even though we operate under the name of a nationally-recognized HVAC company, we’re a proud local business based in Mount Airy. Our team back all their jobs with amazing guarantees that make sure we’re always on time, and we always do the job right the first time. To be as transparent as possible, we also have a StraightForward® pricing guide so you’ll know the costs of all our heating and AC services before we perform them. For local HVAC repair, installation, and maintenance need in Mount Airy, Frederick, or beyond, call the experienced team from One Hour Air Conditioning & Heating® of Mount Airy right now!

Always On Time... Or You Don't
Pay A Dime

We Have A Reputation For Being Punctual, Friendly, and Knowledgeable

    “Austin provided expert, professional service and explained the work performed. I am extremely satisfied with One Hour Heating and Air Conditioning.”

    “WOW, what savings. I will recommend your services and equipment for everyone.”

    - Diane D.

    “I thought that it was going to be a mess (getting ducts cleaned) but they were very neat and professional and they had taken their time to do it right. Well done and I only wish I did it sooner.”

    - Ira G.

    “Dave from One Hour Air and Heating did a great job.”

    - Paul M.

    “Called and let me know when he would arrive, did a very thorough job of checking everything.”

    - David D.

    “I will stick with them and would recommend them to others because they are very good at keeping to their schedule and being responsive. Their workers are professional, clean, and, they respect your house and you.”

    - Marty V.
  • Areas We Serve
    • Barnesville
    • Beallsville
    • Bethesda
    • Bladensburg
    • Boyds
    • Brentwood
    • Burtonsville
    • Cabin John
    • Chevy Chase
    • Clarksburg
    • Damascus
    • Derwood
    • Dickerson
    • Fort Washington
    • Gaithersburg
    • Germantown
    • Hanover
    • Hyattsville
    • Kensington
    • Lanham
    • Littlestown
    • Montgomery Village
    • Mount Airy
    • Mount Rainier
    • New Market
    • Olney
    • Oxon Hill
    • Poolesville
    • Potomac
    • Rockville
    • Sandy Spring
    • Silver Spring
    • Spencerville
    • Takoma Park
    • Washington
    • Washington Grove
  • Zip Codes We Serve
We may service additional communities. Please contact us for more information.
  • Heroes Club
  • Home Advisor - 100 Reviews
  • Air Conditioning Contractors of America
  • Energy Star
  • Better Business Bureau A+ Black and White Image
  • UWin Black Badge

Here for You Around the Clock

Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

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