Two Convenient Locations:
(937) 426-7399
712 N Fairfield Rd.
Beavercreek, OH 45434
(937) 885-5090
54 Hiawatha Trl.
Springboro, OH 45066
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My property has 2 furnaces installed by Extreme. Both are heat pump with natural gas backup. Both furnaces (one 4 years old, one just installed) were done promptly and are what we expected. I would gladly endorse and recommend Extreme.
R. Papajcik - Beavercreek
We are simply delighted with the new high efficient system we had installed by Extreme’s One Hour, but we were blown away by the amount of money we saved! The rebates and credits are great but the tax match made our decision to choose One Hour an easy one. Thanks One Hour!
Barry & Terri Threlkeld - Centerville
Very pleased with the service provided by Extreme. I’ve been recommending you to co-workers and friends. I also submitted an "A" rating on Angies List, to help future customers choose Extreme Heating and Cooling.
R. Steffek - Centerville
Steve Moore & his crew were outstanding!! Two months after the install and I know I can call with questions or issues but I do not have any!!!!
…. Great team!
… Great company!!!
C. Batchelor - Beavercreek
After getting multiple estimates to replace my air conditioning system One Hour Heating had the best product for the best price thanks to their tax match program and did a fantastic job of installing my new system.
Monte Murrel - Beavercreek
Wow, Extreme’s One Hour Heating and Air are true experts in their field. My family and I had suffered from uneven, uncomfortable temperature throughout our entire home for years. Not only did One Hour fix this issue completely while installing my new system, I saved a small fortune. With the tax match program, rebates and discounts from One Hour I saved over $3,500.00!
Jim Kroger - Centerville
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Upgrade your home's HVAC system and save up to $3000 Heating Safety & Efficiency Tune-Up $77.97 Award Winning Service Angie's List Super Service Award

Extreme's One Hour Heating and Air Conditioning
Always on time… or you don’t pay a dime! ®

Extreme's One Hour Heating & Air Conditioning in Dayton,Ohio, now with two convenient locations in Beavercreek and Springboro. Extreme's One Hour is your one-stop HVAC contractor for AC repair, Furnace Repair, Replacement HVAC systems, HVAC installation, specializing in Trane HVAC, Trane air conditioners, Trane furnaces, Trane heat pumps, and Trane parts.

We also carry other brands such as Amana, Bryant, and Goodman, plus parts, service, and maintenance for all brands such as Carrier, Lennox, York, Maytag, Rheem, American Standard, Ruud, Heil and many more. Make sure to take a look at our Products page where you will find product information on Heating, Air Conditioning, Heat Pumps, Indoor Air Quality, and Thermostats.

Everyone at Extreme's One Hour, from our schedulers to our service and repair technicians, respects the value of your time and your home as your castle. That's why if our technicians do not show up on time, do not wear "Floor Savers" to protect your floors, and do not clean up after they have solved your problem, your One Hour service is absolutely free. We mean it when we say your satisfaction is 100% guaranteed.

We are committed to exceeding your expectations and we prove it day in and day out. Call the heating and air conditioning contractors Dayton looks to for the best of product selection, professional and courteous customer service and value: Extreme's One Hour Heating and Air Conditioning.

  • NATE Certified
  • Drug Tested & Background Checked regularly
  • On Time Guarantee for Service at your home!
  • Complete and thorough analysis of your entire system
  • No charge "Free Estimates" for new system replacement
  • Competitive pricing