Don-Martin Heating, Cooling & Geothermal Inc.

Don-Martin Heating, Cooling & Geothermal Inc. holds a perfect 5.0-star rating across 26 verified client reviews in Janesville, Wisconsin. The contractor handles heating and cooling systems including air conditioning, furnaces, heat pumps, thermostats, and ductwork, with additional expertise in refrigerant services. Operating hours run Monday through Friday from 8:30 AM to 3 PM, the business serves Janesville and surrounding Wisconsin communities. The company maintains licensing and insurance credentials as stated on their website, with a no-fix-no-fee service guarantee backing their repair work.

What distinguishes this contractor is their geothermal system expertise. Website content indicates specialized knowledge in geothermal heating and cooling solutions, a niche offering not common among standard HVAC providers. The company also advertises a no-fix-no-fee guarantee, meaning customers pay nothing if the technician cannot resolve the issue. Their service offerings span multiple equipment categories including heat pumps, thermostats, and ductwork, positioning them as a comprehensive residential climate control provider.

Reviewers consistently mention same-day service responsiveness. Technician Sam handled a low-refrigerant AC repair with same-day arrival and straightforward pricing according to reviewer Nicholas Bruhnke. Technician Clay managed multiple scenarios including capacitor replacement, refrigerant top-up, and new furnace installations, with reviewer Josh noting reasonable costs and detailed part-and-labor breakdowns. Reviewer Paul Perschon described Clay going 80 miles beyond the service area to connect him with geothermal specialists in his region, demonstrating commitment to customer problem-solving beyond typical contractor scope.