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Maintenance Program

The One Hour Heating & Air Conditioning maintenance agreement, Comfort Club, provides you with regular system checks. It's a bi-annual planned check-up and service.

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Customer Reviews of One Hour Heating and Air Conditioning

Customer Reviews

"One Hour is the best HVAC company service and experienced in the area. I will continue to be a customer and promote the company. 1st Class. Tommy is GREAT!"

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Find a One Hour Heating and Air Conditioning near you!

Local Cities We Service

  • Bethesda
  • Chevy Chase
  • Dickerson
  • Ellicott City
  • Frederick
  • Gaithersburg
  • Germantown
  • Hagerstown
  • Rockville
  • Silver Spring

Find A Location Near You

One Hour Heating and Air Conditioning - Frederick, MD


2707 Back Acre Circle
Mount Airy, MD 21771

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Heating and Air Services in Maryland, Including Frederick

If you live in Frederick, heating and air services are available from the nation's fastest growing franchises. 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 busted 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 offer a 100% guarantee on all of the work that we do. We are based in Mount Airy, MD, and we serve residents of Frederick, and Rockville, MD. We are available to help residents of the following counties:

  • Carroll
  • Frederick
  • Howard
  • Montgomery
  • Washington

Whether it's the coldest months of winter or the middle of the hottest summer months in Frederick, heating and air services from One Hour Air Conditioning and Heating will allow you to achieve the ideal climate in your home. Call us today!

Welcome to One Hour Heating & Air Conditioning, your source for prompt, courteous, reliable heating and air service. Offering heating and air conditioning maintenance, installation, repairs, and everything in between, our goal is to address your HVAC needs in a timely, efficient, and cost-effective fashion.

Always on Time, or You Don't Pay A Dime
To prove how much we value your time, we guarantee that our technicians will show up when you expect them, or your service is free. It's that simple.

No Mess and No Hassles
Heating and air service doesn't have to be messy. Our technicians will leave your home clean and debris-free, or the job's on us.

Straightforward Pricing
The cost of your heating and air project should be easy to understand. That's why we'll present a price up front and get your approval before proceeding.

Total Comfort Guaranteed
We want you to be completely satisfied with the service you receive. All repairs to your HVAC system are backed by our 100% guarantee. If a repair fails during the current heating or cooling season, we'll repair it again at no cost to you. We also guarantee our air conditioners for five years and furnaces for ten years.

Skilled Professionals
Continuous training and high company standards make our HVAC technicians the most qualified in the industry. With your comfort at stake, you deserve only the best.