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

Payment Options

  • Debit Cards, Discover, MasterCard, Personal Checks, VISA

Contact Details

  Website
  City Beavercreek , OH
  Zip Code 45434
  Address 712 North Fairfield Road
  Phone Number (937) 426-7399

Products & Services

Air Conditioning Repair and Maintenance

Air Conditioning Repair and Maintenance

Our highly trained and certified technicians are able to repair any brand of air conditioner.

All of our technicians are drug tested and background checked to insure you have a comfortable and pleasant experience with them in your home.


Replacement and Installation

Replacement and Installation

Air conditioner replacement is a quick and easy process with Extreme’s One Hour Heating and Air Conditioning. We start with a free in-home estimate from one of our knowledgeable comfort advisors to determine the perfect system to fit your home and needs. Then, our highly trained installation crew will be at your home first thing in the morning and have your housing cooling down with a new air conditioner by the end of the day!

Don’t wait, call us today!

  • I would recommend this business

They are always punctual and neat. I think they are great. We have had Kevin check our system and he was wonderful.

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  • I would recommend this business

Devin & his team are extremely professional! Not to mention we how have air conditioning again!

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Overall ratingExcellent

  • I would recommend this business

Tech Matt explained everything he was doing and why. Showed up early and very professional.

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Overall ratingExcellent

  • I would recommend this business

Our a/c went out last night on one of the hottest days of the summer. We called around 10:15pm and Kevin, our technician, was here by 11:00pm. He replaced our capacitor and our system was running again by 11:30pm. Thank you so much for the prompt service!

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Overall ratingExcellent

  • I would recommend this business

These people are dedicated to good results, and customer service. Extreme is a great part of this companys name, they did a 12 hour job replacing my old ac with new updated unit and the extreme part is that they had to put it in my attic which reached 155 f at one point. yea that's dedication!!!
I really must thank Jake, Cory, Curtis and Caleb for such a great job and for all of their dedication even in the horrible heat of our attic I wish I could give them 20 stars but I will settle with 5 stars.

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  • I would recommend this business

Great company to work with. I called to get my vents cleaned and they made it happen within a timely manner. They showed up when they where suppose to and did a wonderful job.
If you need your ducts cleaned give these guys a call and thank me later! Check out the before and after pic of just one of my vents and you will see the outstanding work!

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  • I would recommend this business

We have been using Extreme's One Hour Heating and Air Conditioning since 2010. Their servicemen are highly technical, as are their salesmen to answer real questions for comparing products without being pushy. Today Kevin C came out and diagnosed our heating problem in less than a minute. Just love their fast response, yet their amazing low prices for tune-ups and service calls. Great company overall. So glad we had them install our Trane system. It has worked well for the past 9 years with great warranties. I give a 5 out of 5 star rating to Extreme's One Hour and Kevin C for today's service.

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  • I would recommend this business

Professional, dependable, and friendly. I am extremely pleased with the furnace and air conditioner they installed for me. The installation was quick and the price was great. The salesman, John, was very friendly and not pushy at all. The install crew were very friendly, quick, clean, and knowledgeable. They took the time to explain how everything works. It was a wonderful experience, I would recommend Extremes One Hour to anyone!

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  • I would recommend this business

After nearly getting fleeced by their competition, we had Extreme’s come look at our broken AC. We had them out to quote a new system, but the sales manager looked at our old system and told us he could get it running for a fraction of the cost of the other guys. Their technician Ben came out today and I couldn’t be happier with his work. He was quick, courteous, and on time. The work was done as quoted and he got our system up and running.

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  • I would recommend this business

Well, I search yelp and you all came through! Anthony arrive this evening, we were told it would be tomorrow due to the workload they were managing. It has been very hot the last week and I am sure we are not the only ones with a crippled A/C.

Anthony's arrival was a God send! He was professional, friendly, informative, and very helpful! He found the issue quickly and had us going in no time! He was also informative about how to balance the air flow in the House!!

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  • I would recommend this business

Had them come out on a Sunday at my last house, the cheapest in town and diagnosed it right away. The part showed up quick and it got installed even quicker. Needless to say they are the only company I will be using in my new home.

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  • I would recommend this business

Extremes One Hour is a great company that provides great service! I would (and will) recommend them to anyone.

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Overall ratingExcellent

  • I would recommend this business

They did an excellent job. The tech was very friendly and respectful. They had my furnace back up and running in no time! Would definitely recommend Extreme's One Hour!

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Overall ratingExcellent

  • I would recommend this business

They have prompt service and knowledgable people to get the job done right !!

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  • I would recommend this business

Great price and the tech was very friendly.

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Customer Testimonials

A/C was out on Memorial Day weekend (93 and humid). Extreme's came out very quickly, and got my house cooling again. It was recommend (not at all forced) that I change my system soon being builder grade at 16+ years old. After getting another quote, One Hour provided a better price for better equipment than the other guys. They provide payment options as well for any need. I have used them multiple times, and every time I call another HVAC company I wonder why I ever strayed from One Hour. Awesome group of guys (and ladies).


If you are looking for an honest company, Extreme One Hour Heating & Air Conditioning is the one! After having my yearly service on my furnace, by another company, I was told that I needed a very expensive repair so they gave me an estimate for a new one. Being a widow that has had bad experiences in the past, I decided to get a couple of estimates so I called Extreme One Hour Heating & Air. They sent John Seiber the Lead Service Technician out to give me my estimate.

After explaining my options he asked if he could take a looked at my furnace. To my surprise he told me that I didn't need a new furnace as there was nothing wrong with mine. Now I know why they have such great ratings for customer satisfaction! It's really amazing in this day and age to find a company that is this honest! Extreme One Heating & Air will be the only one that gets my business from now on!
Thank you John.


Have used Extreme twice in the last three months for different services ( A/C and Furnace )Great service. Was at my house in less than 4 hours !!! both times and charge was very reasonable. Definitely use these company if you what fast and reliable service.


I recently moved into a house that has dog hair in every possible nook & cranny and seemingly never had the furnace filters changed. I called Extreme about duct cleaning and it's the best thing I could have done for a fresh clean start! The guys were so courteous and efficient and really took their time to remove a mountain of the dust, dog hair, dirt, and even a few dead mice (eek!). They also did a sanitizing spray into each vent and my allergies say thanks!! I highly recommend Extreme and their air duct cleaning service if you haven't had your ducts cleaned in a while! It makes a difference in the air flow and quality of air!


I would HIGHLY recommend this company. The same day I called the company came out. Melanie and Diane (receptionist) were very nice and provided great customer service. Mike and Caleb came to my home to clean my dry vent and they did a WONDERFUL job. In doing the job, they were very professional and explained everything to me so that I understood what they were about to do. Please use them and refer them, you will not be disappointed.


I highly recommend this company they did an amazing job installing my new furnace . There customer service was absolutely incredible and very helpful with the questions I had . They also were very affordable.


Everyone at Extreme One Hour was very courteous and professional, and the tech was on site within about 1 hour of calling them early on a Sunday morning. Prices seemed in line with other HVAC contractors. He did replace my run capacitor, which was blown, only to reveal that the compressor was shot too, and I would likely need a new unit. Unfortunately, he couldn't uninstall and take back the $160 capacitor at that point, since now it was "used," albeit only once.

I understand he can't put a "used" part back on his truck, and it's not the tech's fault, but still, it stung. He offered to take it off the bill if I bought a new AC unit from him (which I didn't). I have a $160 paper weight now (that sells for only $10 on eBay or Amazon). I think the damage was the result of lightning, but the tech couldn't definitively confirm this so he didn't state it on the work order (which would have helped me with a homeowner insurance claim). But, I respected his honesty to not claim something he wasn't 100% positive about. I would recommend this company.


This company is top notch. We were quoted a very good price and they did exactly what they said they would do. We couldn't be happier with the service we received from their crew.


Quick turnaround, very professional. Great job on the ac and heat pump installation. Thanks again! We would definitely recommend.


This is the best company! I've always had great service and the system I purchased about 4 years ago has been very reliable. Today I had an annual PM on the system and I just have to say that Ben was absolutely the best! He was instrumental in troubleshooting a problem and went above and beyond. This is why I will always be a loyal customer because of your people like Ben. He deserves a big shout out and kudos!! Thank you so much!!


Excellent company. My tech Howie was extremely friendly and explained in detail the problem with our AC. We were charged a reasonable rate and we're very satisfied with our service. We definitely recommend this company to others. Thanks Howie for a job well done

Social Activity

Have you watched our duct cleaning video yet? If not, it explains our process on how we get your air ducts clean! I https://t.co/5Qapnc2MfR
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Since we have storms and strong winds on the way, these tips from Trane may be helpful! https://t.co/trY5atxfWS
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