At Sisemore Services, we're proud of our years of service to the Sherman area and look forward to helping you with your air conditioning and heating needs. We're pleased to serve both residential and commercial customers; our team is prepared to help you with the sales, service, and installation of the comfort system that is ideal for your home or business.

And be sure to ask Sisemore Services for a free estimate. Whether it's a new installation or routine service, our factory-trained technicians provide the expertise your comfort depends on. And at Sisemore Services, we repair all makes and models. When it comes to your family you want dependable air conditioning and heating systems that provide you with value as well as comfort.

Thanks to Sisemore Services you can expect value and comfort.

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Reviews (7)

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Sam Johnson

Jul 10, 2020

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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
I really thought service of this type was gone for good from this world!! If i could give 10 stars I would. Always go over and above! I will be a customer for life! Best mechanical company out there!!

Laura Hayes

Jul 03, 2020

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AMAZING!!! We had a very difficult job- old house - orange berg pipe- under a detached garage -complicated by a very large pecan tree- and worse, the city of Denison in no hurry to put in a new tap. Brad and crew knew what to do, how to do it .... and fast !!! Highly recommend this company and capable crew. Thank you guys, sincerely.
I AGAIN can’t say enough about these people!! My Old house (1930) started smelling like poo.... my cast iron pipes had cracked and I didn’t know it! Mark and Cole to the rescue .... couldn’t believe the lengths these guys were willing to go to .....to find and

Scott Buckman

Nov 28, 2019

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Very happy service on the phone. They could help me at the time I needed there service they was booked up the day I needed them. but they recommended another company to help me so I could them who they recommended they help me with my issues at home. Thanks Nancy for all your help and helping me to get my issues resolved. Maybe next time for your services.

L. K.

Nov 02, 2019

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We were having significant problems with both our heating and A/C. Sisemore came in, looked at the current situation, and came up with a solution that was not only NOT an un-needed up-sell, but one that worked in our budget, resolved the issues we were having, and improved the overall quality of heat the furnance is providing. It was a pleasure working with Brad, it is very clear he loves what he does! Thank you!

Major Bob

Oct 01, 2019

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They were very considerate to my problems during a busy holiday time. I could not have asked for better service and they were reasonable. Highly recommend.

Rance Davis

Aug 05, 2018

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I have had more than one occasion to call Sizemore. They are honest, priced fair and respectable while on site and on the phone. You won’t do better in Grayson county.

Mary Jones

Jul 29, 2017

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Excellent, fast and reasonable service! My technician, Robert Buck, was very prompt, courteous and resolved the issues I requested and also repaired another problem in my master bath. I will certainly use this company again and recommend them to my friends.