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 148 customer reviews

Map of Beavercreek, OH

Great service and very prompt - Came within hours of my call

The ServiceTech. - Anthony - Was very professional and explained everything he did and why. I would rate him 5 stars plus.

Map of Huber Heights, OH

Great Service

Quick response and technician (Mike Treadway) was very honest and quick at fixing the problem. Would highly recommend this company and technician.

Map of Dayton, OH

Great mechanical knowledge and customer service

Extreme One Hour is our go-to company for A/C services because we haven't found anywhere near us with as good customer service with value. Michael, specifically, is our requested tech. He provides a lot of background knowledge that we wouldn't be aware of and we trust his recommendations and because he's straight forward about what's really needed. It's nice not feeling like a car salesman walked into our living room to sell us a bunch of things we don't need. I appreciate interesting that Extreme One Hour is truly looking out for our best interests.

Map of Dayton, OH

Professional service and honest answers

Our tech, Michael Treadway, did a great job repairing our blower unit. He was able to quickly diagnose the problem and give honest recommendations about how to proceed. He explained the pros and cons of all of our options and helped us get set up with the best motor for our homesize. I have recommended One Hour Service to all of my coworkers who have had AC/Heat issues and any time I need service in the future I will request Mr Treadway come out. Its refreshing to have a someone who knows what they are talking about and gives straight answers and not just trying to sell the most expensive equipment.

Map of Miamisburg, OH

Mike was great. Give him a raise 🙂

Michael T.

Michael T.

Leak repair and air balancing with adding additional duct work

Near Kitridge Rd, Dayton, OH 45424
Michael T.

Michael T.

No cool. Found melted low voltage wiring going into the outdoor unit. Cut and repair connections. System is operating properly.

Near Catkin Ct, Waynesville, OH 45068
Anthony F.

Anthony F.

Comort club tune up

Near Greenburn Rd, Beavercreek, OH 45434
Michael T.

Michael T.

Performed system maintenance and optimization

Near Powell Rd, Dayton, OH 45424
Anthony F.

Anthony F.

Comfort Club Tune Up

Near Westminster Dr, Beavercreek, OH 45431

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