Heating & Air Conditioning Services in Dayton, Ohio

Do you need your furnace or air conditioner repaired?

Extreme’s One Hour Heating & Air Conditioning in Dayton, Ohio is a premier HVAC repair and replacement service provider. We take pride with our industry best “on-time guarantee”.  There is no reason to wait around at home for the technician to arrive, Extreme’s One Hour Heating and air Conditioning gives you convenient scheduling options and we will be there on time!  Never wait at home on us to arrive. We offer ½ hour call or text ahead to let you know the technician is on the way.  Call us now  937.426.7399

HVAC Repair in Dayton

Local HVAC Dayton Company with a National Backing

Locally owned and operated, our entire Dayton staff is ready to assist you the moment you call. You can expect the same service from the nearly 300 other One Hour Heating and Air Conditioning shops across the country. Being part of an organization as large as One Hour gives us leverage and backing with all the major brands such as Trane, Carrier, Lennox, Bryant, Honeywell, Goodman and Amana…and many more.  Being part of the One Hour Family allows us to stock our trucks like rolling warehouses carrying a large amount of parts and equipment so you don’t have to wait.  We also provide full service duct cleaning for you home or office.  Our professional staff will give you a free in home estimate and thoroughly explain the Duct Cleaning process.

Duct Cleaning in Dayton

Need a new system installed?

We are happy to provide you a free estimate, for your home or business, to replace your furnace, air conditioner, heat pump, or entire system. We carry many lines of equipment; we are a Trane Comfort specialist as well as Amana factory certified dealer. 

6-time Angies List super service award winner.   Dayton BBB Integrity Eclipse award winner.

Check out what our great customers have to say about us on Home Advisor, Facebook and Google!

Always Here When You Need Us!

  • Same day service and repair
  • Emergency service available 24/7
  • No overtime charges

Extreme's One Hour Truck Dayton, Ohio

Convenient Payment Options

  • Accept cash and check
  • Accept all major credit cards
  • 0% interest financing available

Military & Senior Discount

  • 5% Discount for Military and Seniors
  • Specials and Coupons Available
  • Click here to see our specials


Comfortable and energy efficient natural gas heat for your home with constant air circulation all year long.  Call us to learn more.

Heat Pumps

A dual purpose system from that heats your home in the winter and cools it in the summer.  Set up a free no cost estimate today!

Air Conditioners

We provide economic and efficient home cooling options from multiple manufactures. Get ready for summer.  Call us today to save!!

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Check out what our happy customers say about us…

Local Reviews

Rated 5.0 out of 5 stars based on 136 customer reviews

Map of Dayton, OH

Great service, good team, courteous and polite

Map of Dayton, OH

Great work fast service

One hour is the best

Map of Beavercreek, OH

Extreme's One Hour H&A/C Semi-Annual Service

Service was excellent. E-mail invoice leaves much to be desired. Way too small - microscopic type. Did not accurately portray signatures.

Map of Englewood, OH

Friendly and professional

Map of Sugarcreek Township, OH

Great service with awesome price! !

Techs are very friendly, great service, extremely satisfied with the result! Most importantly, the price is very reasonable and affordable. Surely we will return once we are due for another service.

Mike K.

Mike K.

Air duct cleaning in the Heights with a new install!

Near Strathaven Dr, Dayton, OH 45424
Anthony F.

Anthony F.

CC Tune Up

Near Melanie Ct, Beavercreek, OH 45434
Michael T.

Michael T.

Semi-Annual Maintenance

Near Eagles Way, Xenia, OH 45385
Anthony F.

Anthony F.

Comfortable Club Tune-up

Near Ticonderoga Ct, Dayton, OH 45434
Michael T.

Michael T.

Semi-Annual Maintenance

Near Colonial Dr, Dayton, OH 45434

Call us today for Heating and Air Conditioning Services for Dayton, Ohio