Heating & Cooling Services for Mount Airy & Surrounding Areas

100% Satisfaction guarantee!

As the leading HVAC service provider in MD and throughout the United States, we proudly serve communities from coast to coast—bringing expert service and peace of mind to homes throughout your area. One Hour Heating & Air Conditioning® of Mount Airy is based in Mount Airy and provides expert heating and cooling services to residents in Mount Airy and the surrounding areas.

Check out our complete service area map below. If you’re still unsure whether we service your address, give us a call at (301) 259-3815.

Two One Hour Heating & Air Conditioning technicians standing confidently in front of a service van.

Heating, AC & Furnace repairs in Mount Airy

100% Satisfaction guarantee!

When homeowners want a reliable heating or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.

At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time - guaranteed.

HVAC Near Me In...

One Hour Heating & Air Conditioning® of Mount Airy services the following communities:

Frederick
Gaithersburg
Glenelg
Granite
Greenmount
Hampstead
Keymar
Lineboro
Manchester
Marriottsville
Monrovia
Mount Airy
New Windsor
Reisterstown
Sykesville
Taneytown
Thurmont
Union Bridge
Westminster
Woodbine

We Have a Reputation

For Being Punctual, Friendly and Knowledgable

4.7

(807 reviews)

Carol Gilbreath Carden

04-18-2025

“Amazing, efficient, polite,”

Katie Sidey

04-14-2025

“Tyler took great care of us! He has a very professional demeanor and he was very respectful of my house. He covered his boots when he came in and out of the house and cleaned up the space after he was finished. Very thankful that Tyler was sent to our house today! Thank you, Tyler!”

Ofelia Li

04-11-2025

“There were 3 of them(can't remember their names.) They were friendly, polite and answered my questions. They did a good job!!! Thanks much. .”

Linda Orochena

04-04-2025

“Larsen was very knowledgeable, professional and friendly! I appreciate his solution to the problem and his promptness in coming quickly!!”

Yasmine Gagneul

04-03-2025

“Tyler was very professional,listened to our questions. Good job!! His name is not on your list. Yasmine Gagneul & Ken Boheler”

Patricia Moore

03-26-2025

“I hope I got the right person. He looks like the one that was here. He did a great job. He went through everything with me. He was very knowledgeable, very professional.”

Marusia Zearfoss

03-25-2025

“Installed new heat pump & hot water tank. Excellent work. Very professional crew who obviously care about the quality of their work.”

Brian Childs

03-17-2025

“Our appointment with Shawn was professional knowledgeable and beyond friendly. I highly recommend this company.thank”

JLB aka Bellus

03-07-2025

“Great job...Thanks!”

Bruce Zinck

03-04-2025

“Larson was awesome. So knowledgable extremely friendly. He has been here before and same results. Outstanding”

Special Offers

Mention these discounts at time of service

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$150

HVAC Inspection and Plumbing Walk Inspection

Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply.

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