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Durham Heating & Cooling Service Experts

Don't Let "Small" Problems Turn
Into Big Ones. The One Hour Guys Can Help.

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Durham HVAC Services

Air Conditioning and Heating That Makes Your Home Better

After hangin’ up my Air Force pilot wings, I started what would become Green Horizon One Hour in 2007. Our goal is to make your home better with the comfort provided by quality HVAC services. It’s probably why we’re the #1 installer of home efficiency improvements in the Raleigh – Durham – Chapel Hill area. Plus, those geothermal and super high efficiency systems are freakin’ cool. And everything you choose is covered by our Whole House Promise.

About Us

Raleigh-Durham HVAC Services with a Whole House Promise

We Don't Sell You Things You Don't Need

Our Whole House Promise means we won’t recommend things you don’t need. If anything we recommend and install doesn’t improve your home’s efficiency, we’ll replace it or give you 100% of your money back within one year. This way, you can be certain that our Raleigh-Durham HVAC repairs, installation, and maintenance are services that you can trust for years to come.

Always On Time... Or You Don't
Pay A Dime

‘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.
We Love What We Do
Our trained Comfort Specialists are friendly,
knowledgeable, and genuinely love helping people.

Learn More About Us

We Have A Reputation For Being Punctual, Friendly, and Knowledgeable

“I have been very impressed with the standard/routine maintenance services as well as the duct cleaning, The technicians were courteous, knowledgeable, thorough, and conscientious. They explained the ...”
- Nicole Knickmeyer
“I had the best experience with One Hour Air Conditioning! Jose was the gentleman who was sent to my home and he provided excellent service. He was very knowledgeable, he fixed my AC problem and was ...”
- Elena del Moral
“I just want to say Thank you to Sheena James, i didnt actually have any services done, i was just inquiring about yall services, but Sheena was very helpful friend courteous and knowledgeable about ...”
- Ida Thomas
“Call in to get some information about my central heating and spoke to ms Sheena J she was very help .provided me with great information .i will be using your service very soon and telling my friends ...”
- Patrice boyd
“I was please to speak with Sheena James about my Ac unit at my residence. She was courteous and respectful of my needs, and I felt welcome. Thank you for all the good customer service.”
- Aron Mahon
“I just want to thank you for the service you've provided over the years. Recently, Adam Gill came out to give me my regular service examination of my heating system. Just as he was the last time he ...”
- Wayne Whaley