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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Client Testimonials

Always a Pleasure

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


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.


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.


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!!


Technician Deserves 5 Stars

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


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.


Great Work

Keith did great work.


Courteous and Professional Work

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


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.!


Excellent Service

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

Thank you – see you in the Fall!


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.


Informative and Friendly

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


Technician was Pleasant and Efficient

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


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.


From Our Blog

Reduce Your Home’s Humidity Naturally

This time of year in southwest Ohio, the humidity cranks up to some truly uncomfortable levels. And if you’re living in a home that doesn’t do a good job of keeping that moist air outside, you’re likely experiencing some tough days and tougher... read more


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