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Columbia, MD
Columbia, MD
Bringing Comfort Home
Columbia HVAC Services
One Hour Air Conditioning & Heating® of Columbia
4.8
Heating, AC & Furnace Repairs in Columbia, MD
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.
We Have a Reputation
For Being Punctual, Friendly and Knowledgeable
4.8
AJ
10-21-2025
“Tyler helped up out very quickly and he was professional and informative.”
William Evans
10-11-2025
“I am having a new HVAC system installed. Mr.Allen Powell was very knowledgeable and made sure I fully understood the various choices available to me. I feel good about my decision and look forward to having my new HVAC.”
William Evans
10-11-2025
“I was having a problem with my heating. Brandon was excellent and walked me through the process of troubleshooting my system. I have 12+year system and will make a decision to repair or replace the system. I trust One Hour will give me a great choice.”
William Evans
10-11-2025
“Chris and Christopher installed a new HVAC system for my home. Both technicians were professional and knowledgeable. The HVAC looks excellent. I've been with ONE Hour 13 years and I continue to be satisfied with their service. I will recommend One Hour to anyone who needs HVAC services.”
Penni Vera
10-09-2025
“Michael our technician was polite, knowledgeable and efficient. He explained everything in terms that were easily understood. I would recommend your services to anyone.”
ed tyler
08-18-2025
“My tech Majdi was awesome.”
Janet Cosner
08-05-2025
“The tech was knowledgeable and nice and explained everything well!”
Joe Dickinson
08-05-2025
“Very nice and helpful thank you agin”
Lindsay S
07-30-2025
“Ed Kreipl was fantastic- he figured out the issues causing our AC leak quickly and fixed them without a problem. Very knowledgeable, signed on for the maintenance plan to have him be able to come back and keep us on the right track. This company was the one out of six I called who could come out soonest to fix our AC - they were able to come out the next day. Overall very happy with the experience!”
Brad Weiss
07-21-2025
“Courteous, informative and generally great to work with.”
Our customers love what we do because we treat them like the neighbors they are to us. While we carry the One Hour name, we are an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForward® pricing guides for your benefit, and will pay you back for being even one minute late to an appointment.
Here For You
When You Need Us Most!
'Round the Clock Availability
No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
100% Satisfaction Guarantee
We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
StraightForward Pricing® Guide
Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
Always On Time…Or You Don’t Pay A Dime!®
We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.
Financing Available!
Prioritize your comfort without fronting the entire bill on day 1 – contact us today to learn more about financing options.
Hours of Operation
We are available 24/7 to take your call for emergencies. For all other services, our appointment hours are:
Monday
24 hours
Tuesday
24 hours
Wednesday
24 hours
Thursday
24 hours
Friday
24 hours
Saturday
24 hours
Sunday
24 hours
Authority Brands is the leading provider of in-home services, building brands that support the success of franchisees as well as better the lives of the homeowners we serve and the people we employ.
