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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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"Hartman Bros does a good job They installed my Lenox system and maintain it every year. They have always been responsive and professional. I will use them for my next system."

— Judy Gleason
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"I am a satisfied customer. I have been for over 50 years"

— Kenneth K.
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"Service was timely and the techs were professional and pleasant. There was a hitch but it was taken care of quickly. I recommend this company."

— W. Blume
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"AMAZING customer service!! My a/c went out this weekend - yes, THIS weekend the hottest weekend of the year. I called the office and they were able to have a service technician out within 5 hours. The truck was a sight for hot and sore eyes for sure. He did a wonderful job finding and fixing the problem as quickly as possible. 10/10 highly recommend!!"

— Estela G.
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"My service was outstanding. They arrived within a few hours. The technician was knowledgeable, kind and made me feel better as I was upset and freezing with no heat. They went above my expectations to find my part do it didn't have to be ordered. My Trane furnace is old. Definitely would recommend this company and I will continue to use them in the future for regular maintenance."

— Michelle L.
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"We didn't have to wait long for them to respond to our call. They fixed the problem, explained to us what happened, and explained to us what to do if the issue should occur again. Also, they have great customer service. We will definitely use them in the future if needed."

— John Kravec
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"Same good service over several years. Because Hartman's takes care of my furnace every year, there were no problems."

— James C.
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"Professional from start to finish. Arrived on time. Installation went smoothly. Faster than expected. Very helpful from the start. Answered all questions. Communication was excellent."

— Michael T.
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