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Geothermal Heating And Cooling: The Go-To System When Switching Out Your FurnaceGeothermal heating and cooling systems are the most energy-efficient home comfort systems you can buy. Rather than burning fossil fuels for heating or using ozone-depleting refrigerants for cooling, a geothermal heating and cooling system uses renewable (and free) heat from the earth.

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"I have always had excellent service from Hartman Bros. They go above and beyond! Thank you, Ked S."

— Tina Fourman
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"We've been using Hartman Brothers for many years to service our personal residence and also our church building. They are very friendly, professional, and reliable!"

— Dave W.
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"This was a great service call. The service mechanic was very efficient and did a great job."

— Donald S.
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"Hartman Brothers responded within hours of our furnace going out and gave us several options. They are always courteous and knowledgeable. We have done business with them for 20+ years."

— Mindy Meyer
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"I appreciate my technician Dalton. He is very thorough and takes really good care of my HVAC. He is also very patient and kind. Thank you Dalton!"

— Patty Barnes
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"Our Tech was amazing to work with, he was very patient and answered every single question that we had didn’t rush us at all. We had Hartman at our previous home, continued the service at our new home. Would highly recommend them to anyone!"

— Jerry C.
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"Great communication throughout the process. Things were explained to me in terms that I could understand. Very fair and professional. I'd highly recommend Hartman Brothers to anyone!"

— Jared C.
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"I was very pleased with the quickness of them getting here and fixing my thermostat so I could turn on my heat. Professional and communication was great! Thank you!!"

— Lucinda E.
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