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We respect your time that's why we guarantee prompt, professional HVAC service.

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

General Info

One Hour Heating & Air Conditioning has delivered reliable residential HVAC services to Indianapolis and surrounding areas for over 100 years. Whether you need routine maintenance to help extend the life of your system, an emergency repair, or a new system installed, you can trust our team of HVAC professionals to get the job done right the first time.


24/7 Emergency Service:

Your HVAC system might not work around your schedule, but we do. Call us day or night and we'll get you taken care of in no time.


Highly Trained & Professional Technicians:

Not only are our technicians some of the best trained in the industry, but you can feel comfortable having them in your home. All of our technicians are background checked, drug tested, clean and professional. They'll never leave a mess, just a properly running HVAC system.


Always On Time, Guaranteed:

With all of life's day-to-day commitments, we know you don't have hours to spare. That's why we're always on time, guaranteed.


Comprehensive & Complementary Diagnosis with Repairs:

Before you repair with One Hour, we'll do a thorough investigation into the issue and provide a comprehensive and complementary diagnosis to ensure we catch everything the first time.


Trucks Stocked with Parts for Same-Day Repairs:

As friendly as our technicians are, we know you don't want us to make multiple trips to repair your HVAC system. That's why we keep our trucks stocked with a variety of parts for same-day repairs.


StraightForward Pricing Guarantee:

There's no guessing game when it comes to our estimates. We pull pricing directly from our standardized StraightForward Pricing Guide so you know you're being treated fairly.


100% Satisfaction Guarantee:

We always strive to exceed our customer's expectations. That's why we stand behind a 100% Satisfaction Guarantee.


Payment Methods: All Major Credit Cards, Cash, Check, Debit, Discover, Master Card, Visa


Regular Hours

  • Duct Repair & Service
  • Heating
  • Residential
  • Furnace Repair
  • Air Conditioning
  • Service & Repair
  • Air Duct Cleaning
  • Installation

We service all major brands.

Payment method
amex, check, discover, visa, master card
Park 100

We have been accredited with Indianapolis' Better Business Bureau since 2008.


North American Technician Excellence (NATE) Certified:

Our technicians are certified by the North American Technician Excellence organization, the nation' largest non-profit organization for HVACR certification.


Indiana Association of Plumbing Heating Cooling Contractors:

We are proud members of the Indiana PHCC Association and actively participate in the mission to protect the environment and improve the health, safety and comfort of society.


Energy Star Verified HVAC Installers:

Did you know nearly half of all HVAC systems are installed incorrectly? As an Energy Star Verified HVAC Installer, we follow the Energy Star Quality Installation guidelines which ensure your HVAC system gets installed properly.


Members of the Air Conditioning Contractors of America:

As Air Conditioning Contractors of America members, we follow the quality standards and industry best practices set forth by the ACCA to ensure our customers receive service that meets the highest of standards.


Better Business Bureau Certified:

We have been accredited with Indianapolis' Better Business Bureau since 2008 and are continually working to maintain our A+ rating.

Air Conditioning Contractors & Systems, Air Conditioning Service & Repair, Heating Contractors & Specialties, Heating Equipment & Systems, Air Conditioning Equipment & Systems, Heating, Ventilating & Air Conditioning Engineers, Heating Equipment & Systems-Repairing



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Darren T.



Terrible. They are borderline criminal. Technician didn't hook up my blower motor wires correctly which I had to fix. Their price was absolutely ridiculous. They will not tell you how much a particular repair is without coming out first which will cost you $89. They would not waive the fee even though the technician did not put my furnace back together correctly. He also did not test to make sure it was still functional before leaving. The switch was still off. Don't bother calling with issues. Kenny the manager will basically just call you a liar. Because the only reason a customer would ever not want to pay their bill is because they just don't want to right? Dial One Hour never makes mistakes right? WRONG!

FYI for anyone reading this. A heat exchanger swap under warranty should not cost $1400 which is what they charge. I paid another company $650 which still seems high for 2 hours work but way better than $1400.

Doug H.



Different techs have given me different feelings of "good", but overall, I really like Dial One, compared to the other companies I've dealt with over the years.

If all techs were as good as most, I'd give 5 stars!

Jim M.



I recently recieved a card in the mail promoting a pre-winter furnice inspection service from Dail One Heating. As my furnice/heat pump was about 3yrs old I decided to take them up on this offer. One month after service was done I woke up on a Sunday morning with no heat. The tech. that came out from another company had found that my drain line was completly block and water had gotten back up into vacume pressure switch line and shut down furnice. I was also, told at the time of inspection that my ignitor was getting weak and needed replaced. I decided not to replace it at time of inspection because of cost.$125.00 and because I had heat pump ignitor was only used when temp. dropped below 32 degres. The tech. that came out and fixed plugged drain line also, checked ignitor and I was told, ignitor was good and that if Dail One tech had done a proper inspection when he was there, the problem with drain line should have been addressed. As tech. that made repairs told me it just didn't happen over night. Waiting to hear from Dail One to see what their response is. Will post later.


We recently had issues with our 3 year old unit and received the best service from Dial One Hour. The technician that came out was extremely nice. He called around until he found the part for our unit and stayed until we were fixed and up and running. It is great to know there is a place we can rely on for great service. Thank you!!