Dayton and Springfield Ohio Heating, Geothermal and Air Conditioning Contractor

Detmer and Sons, Inc. is a leading Heating, Geothermal and Air Conditioning contractor in the Dayton and Springfield, OH area. We have been serving our valued customers for three generations

Our goal is to give our customers the confidence and peace of mind that Detmer and Sons is the right company for them. We constantly educate and train all Detmer and Sons employees on the skills needed to provide our customers with the most professional, personal, ethical and timely services in the industry.

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Residential Services

For three generations Detmer and Sons has been bringing the highest quality of standards to the homeowners of the Miami Valley.

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Commercial Services

Detmer and Sons offers a wide variety of commercial solutions from “Design and Build” to “Bid and Spec” work throughout Dayton, Springfield and the surrounding areas.

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Our Specials

We offer ongoing specials to save you money on our products and services. Please check our specials area often to see the latest offerings we have available.

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Client Testimonials

Amazing Technician

Tim was fantastic…give that man a raise…and I am not just saying that because I am a former employee. Usually when they inspect my furnace/ac I am not home so I don’t really get to see what they do. Tim checked not only my furnace but also gave me advice on the water heater, benefits of a humidifier and advised me on getting new smoke and carbon monoxide detectors for my protection. I appreciated all of his recommendations and his concern for my safety and comfort. A real benefit to the Detmer team!!


Excellent Service

Tim Sweeney deserves a compliment- courteous, professional and on time!

Thank you – see you in the Fall!


Courteous and Professional Work

Carl is always very courteous and professional Also on time to perform the service work.


Thank You for the Rapid and Thorough Job

A great job done again by our Tech 212. Thank you for the rapid, friendly and thorough job you do for both our properties. He is always pleasant and professional, but most of all honest when I have asked any questions concerning our furnaces or air conditioners. The best.


Extremely Pleased

We were extremely pleased, not only with the service and technician, but with the promptness and kindness shown to us by Matt Detmer. He and his family have been great friends of our family for the last almost 30 years. We will continue to be loyal customers of Detmer and Sons.!


Always a Pleasure

Always a pleasure to have Josh perform our bi-annual maintenance.


Technician was Pleasant and Efficient

The scheduling was easy and the technician was pleasant and efficient.


Thank you for a job well done!

Thank you and your technician for the excellent work done to repair our furnace in a very timely manner. Also, we appreciated this tech coming on Sunday afternoon to inspect our furnace. Job well done.

Would refer many friends to you.


Informative and Friendly

Keep up the good service. Tech 149 was very informative and friendly.


Great Work

Keith did great work.


Technician was Kind and Knowledgeable

Josh was professional, considerate, and polite he treated us like family. He didn’t want to leave an elderly disabled veteran without heat and didn’t want to leave without doing everything he could to get our heat up and running. He was sensitive to our needs and answered all our questions. We wish all technicians were this knowledgeable and respectful and kind. If possible thank Josh again for an excellent job.


An Outstanding Job by Your Technicians

Your Technicians are well qualified and do an outstanding job. Customer satisfaction is their goal. Of course, I was well satisfied and could not have had a better quality product put in my home.


Excellent Customer Service

Excellent Customer Service. The Tech (Tim Sweeney) explained everything and was outstanding. I am very happy with Detmer and Sons. I will refer you guys to anyone I hear needing service. Thanks and will see you in the Fall.


Technician Deserves 5 Stars

Your technician was super nice and explained everything that he did and why he did it. He deserves 5 stars.


From Our Blog

Understanding the “Feels Like” Temperature

If you watch any weather at all during the summer, you probably hear the meteorologists refer to the heat index. It’s a measure of the “feels like” temperature, a combination of the actual air temperature and the humidity. Regardless of how hot or... read more


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