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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
Lynda Mcmillian
01-31-2026
“He was very knowledgeable about everything that he explain to me. About the different plans of equipment. He went over each plan step by step. He had great customer service skills.”
Brian Martin-Haynes
01-30-2026
“Josh was very clear in his explanations, as well as in his instructions to his trainee. They were here for quite some time tracking down the issues. He has very helpful as well as courteous.”
Courtney Maxwell
01-27-2026
“Damon was on time, professional , friendly and personable. He had thorough knowledge of the issue and explained the reason for it happening and how he could resolve the issue. He also shared helpful tips for maintaining a functioning HVAC system. Thanks again One Hour Air Conditioning & Heating for sending another true Professional that provided excellent service.”
Meenakshi Chellaiah
01-23-2026
“Tyrell Poole did the maintenance check up. He did a thorough job and explained what needs to be done in the future to maintain the system properly. His explanation on the ecobee is great. Overall he did a great job and 5 stars justify his work.”
Jackie R
12-10-2025
“Tyler was great in helping me to understand the problems with my hvac system and my options to resolve the issues.”
Michael T
11-26-2025
“Josh from One Hour did a great job today. He cleaned my coils, made sure all systems were operating properly, set my Humidifier up (new system for us so we didn't know how to turn it on), inspected the outside compressor, and answered my many questions. I will definitely request Josh for my next scheduled visit!”
Sherry Kish
11-21-2025
“Damon was fantastic! You’re very lucky to have him working for you! He’s friendly, knowledgeable, professional—just all around great!!!”
Sue Vidal
11-08-2025
“Tyler was helpful, professional, friendly and overall great guy! We were very happy with our service and with Tyler!!”
Alex Floyd
10-28-2025
“Damon was professional in his approach at performing the heating season check up. He took his time to review the history of the system and checking his notes for the service call. Friendly and outgoing, Damon easily answered all questions while providing his excellent knowledge of system performance and recommendations. Damon is another valued asset for the company.”
AJ
10-21-2025
“Tyler helped up out very quickly and he was professional and informative.”
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.
