Hefel Geothermal Inc
4035 Plum Hollow Rd, Hazel Green, WI 53811
Experience and expertise comes with Terry Hefel and Hefel Geothermal, Inc. In business since 1984, Terry holds Heating Ventilation and Air Conditioning (HVAC) licenses in both Iowa and Wisconsin. A member of both the Iowa and Wisconsin Heat Pump Associations, Terry has installed several hundred systems, including the first horizontal slinky loop system in the Tri-State area.
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