Heating & Cooling Services for Columbia & 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. %{location_name} is based in Columbia and provides expert heating and cooling services to residents in Columbia 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) 918-5642.

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

Heating, AC & Furnace repairs in Columbia

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 Columbia services the following communities:

Annapolis Junction
Arbutus
Baltimore
Bowie
Catonsville
Clarksville
Columbia
Cooksville
Crofton
Dayton
Elkridge
Ellicott City
Ferndale
Fulton
Glen Burnie
Halethorpe
Harmans
Hanover
Ilchester
Jessup
Linthicum
Lisbon
Marriottsville
Millersville
Odenton
Owings Mills
Pasadena
Relay
Randallstown
Reisterstown
Scaggsville
Severn
Severna Park
South Laurel
Savage
Simpsonville
Woodstock

We Have a Reputation

For Being Punctual, Friendly and Knowledgable

4.9

(179 reviews)

Donald Brooks

07-08-2024

“Larson was very technically inclined, knowledgeable of my situation and communicated all details necessary for the job resolution.”

Gary

06-18-2024

“Dwight, Larson and the entire crew performed magnificently installing my new air conditioner. The job took the entire day! On time, polite, experienced, appreciative, describes the entire workers! You cannot go wrong engaging One Hour Air Conditioning— they are great !!!”

Marcus Mingo

06-13-2024

“Fantastic workmanship, extremely knowledgeable. He and his crew did a great job with the installation, I couldn’t be more impressed!”

J Katona

03-05-2024

“We received fantastic service from Larson when he came out to review and perform a quality control inspection on our new HVAC install. He was even able to work thru our outstanding permit inspections with the county for us to get them resolved. Larson was very knowledgeable in the HVAC system mechanics and was so patient in answering our questions. He’s to be commended for pointing out a serious electrical issue with our outside lead wire where the elements had deteriorated the protective covering; which if not corrected, could have been an electrical hazard for us. One Hour should be proud to have such a remarkable employee as Larson!”

Kenneth Williams

01-28-2024

“On time, knowledgeable, personable; and answered all my questions. After making changes to our system, he tested and tested again for good measure. All around GREAT service and experience. I would definitely recommend One Hour Heating and Air Conditioning to anyone looking to replace or upgrade their HVAC equipment.”

Katie Purswell

01-10-2024

“Larson is always professional, thorough, prompt, and kind. He is accurate in his diagnoses and makes sure the customer understands what was wrong, what he did to fix it, and if there is anything you need to do after. Always happy with his work!”

Jennie Wallace

01-09-2024

“Love the way he explains everything thing to me. Polite, professional.”

Jim Weiger

12-23-2023

“Emergency call because our heat stopped working. Young man showed up in about 90 minutes went through and checked everything he could, and even though it wasn’t the best news because have a bad circuit board he was very professional, and courteous.”

Max R.

12-15-2023

“Technician Larson did a great job explaining the condition of my HVAC system, which was purchased new by prior homeowner from One Hour 15 years ago and maintained by them for 11+ years according to maintenance records. Gave me excellent walk through of maintenance, repair and proactive replacement options along with his inspection report, and provided excellent and clear explanations while inspecting too.”

Will Duff

12-14-2023

“Gives a very detailed explanation of the system and possible concerns that may come up with solutions that very in pricing.also with technicians that are easy to talk to with good attitudes. Definitely recommend.”

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