We are just around the corner. Servicing residential homeowners Montgomery, Frederick, Carroll and Howard Counties since 2000.

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Company Info

LOCALLY OWNED & OPERATED SINCE 2000. At One Hour Air Conditioning and Heating®, your time is our top priority, and our technicians will always be prompt for your appointment. We offer our customers on-time service, every time. When you need trustworthy A/C installations, repairs or maintenance, we understand your time is valuable. We will be there when you need us. Got a broken A/C? Has your heater gone cold? Whether you need A/C or heater repairs or replacement services, we will make sure to get the job done right the first time. We always stress the five C’s: courtesy, cleanliness, competence, convenience and character. We guarantee prompt and professional service to our customers on every job that we do.

We accept:

  • Visa
  • Mastercard
  • American Express
  • Discover

Local Technicians You Can Trust



Protection Plans

Are you concerned about your home's air conditioning and furnace? Do you fear an unexpected breakdown at the worst possible time, leaving your family uncomfortable and putting strain on your budget? If so, then consider enrolling in a heating and cooling protection plan from One Hour Heating and Air Conditioning.

At One Hour, we understand the need to have peace of mind when it comes to caring for your home's systems. We know that you may not have the time or skills to take care of the major systems on which your family relies daily. That's why we've teamed up with Direct Energy to offer Home Comfort Collection® protection plans to homeowners.


Area Served

Serving the greater Mount Airy area: Adamstown, Ashton, Aspen Hill, Barnesvile, Beallsville, Bethesda, Bowie, Boyds, Brinklow, Brookeville, Buckeystown, Burtonsville, Cabin John, Chevy Chase, Clarksburg, Colesville, Columbia, Damascus, Darnestown, Darnestown/Germantown, Derwood, Dickerson, Edgewater, Eldersburg, Elkridge, Ellicott City, Frederick, Gaithersburg, Germantown, Glenwood, Halethorpe, Hampstead, Hanover, Hyattsville, Ijamsville, Jessup, Kensington, Laurel, Laytonsville, Linthicuim, Manchester, Monrovia, Montgomery Village, Mt Airy, New Market, New Windsor, North Bethesda, Olney, Pikesville, Poolesvile, Reistertown, Riva, Rockville, Sandy Spring, Silver Spring, Simpsonville, Spencerville, Takoma Park, Urbana, Walkersville, Washington DC, Washington Grove, West Bethesda, West Friendship, Westminster, Wheaton.

  Business Address

2702 Back Acre Circle, Suite 120
Mt. Airy, MD 21771

License Number

MD #4818

Your Local One Hour Heating & Air Conditioning® Team