ℹ️ This listing has not been claimed by the business owner. Information shown
is compiled from public records and may not be current.
Claim this listing to update your business information.
The contractor demonstrates strong diagnostic capabilities and repair efficiency, with technicians consistently identifying issues such as refrigerant leaks and capacitor failures and completing repairs within one to two hours. Response time is a notable strength, with the company scheduling same-day or next-day appointments, arriving earlier than scheduled times, and maintaining reliability over extended service relationships spanning multiple years.
Based on Google reviews
About the Contractor
Don-Martin Heating, Cooling & Geothermal Inc. is a geothermal and HVAC specialist based at 4101 Commercial Drive in Janesville, Wisconsin, serving residential and light commercial clients across southern Wisconsin. The company provides geothermal heat pump installation and service along with furnace, air conditioning, and boiler work for Rock County and neighboring counties including Walworth, Dane, Jefferson, and Green. Don-Martin is a registered Focus on Energy Trade Ally, qualifying customers for Wisconsin energy efficiency rebates and incentives on qualifying high-efficiency equipment. The service territory spans the greater Janesville-Beloit corridor and extends toward the Madison metro area, covering both new geothermal installations and ongoing maintenance for existing ground-source systems.
Perfect 5.0-star Google rating from 26 verified reviews specializing exclusively in geothermal system service and maintenance for Janesville and surrounding communities.
Business Hours
Mon8:30a-3p
Tue8:30a-3p
Wed8:30a-3p
Thu8:30a-3p
Fri8:30a-3p
SatClosed
SunClosed
Regulatory Context
Geothermal Permitting in Wisconsin
Geothermal heat pump installations in Wisconsin require specific permits and compliance with state regulations regarding well drilling, loop installation, and refrigerant handling. Contact your local building department for specific requirements in your area.
Don-Martin Heating, Cooling & Geothermal Inc. specializes in geothermal system service and maintenance, including prompt diagnostics, repairs, and preventive maintenance to keep systems running efficiently year-round.
Preventive maintenance from Don-Martin's technicians maximizes system performance and longevity, ensuring your geothermal heating and cooling system operates at peak efficiency.
Yes, Don-Martin Heating, Cooling & Geothermal Inc. serves Janesville, Wisconsin and surrounding communities with expert geothermal system service.
Don-Martin maintains a perfect 5.0-star Google rating from 26 verified reviews, demonstrating consistent customer satisfaction and technical expertise in handling routine maintenance and complex geothermal issues.
Own this business?
Claim this listing to update services, pricing, and respond to quote requests.
Request a Quote from Don-Martin Heating, Cooling & Geothermal Inc.
We don't have an email address for Don-Martin Heating, Cooling & Geothermal Inc.. The quickest way to reach them is by phone on (608) 758-9882. You can still send your details below and we'll pass them to the nearest installers we can reach.
✓
Quote Request Received
Thanks — we'll review your request and forward it to Don-Martin Heating, Cooling & Geothermal Inc. within 1 business day. If you asked to compare quotes, we'll pass it to up to two more local installers as well. They typically respond within 1–2 business days after that.
If you need to reach Don-Martin Heating, Cooling & Geothermal Inc. directly: (608) 758-9882
Geothermal heat pump installations in Wisconsin may require drilling permits, environmental site assessments, and compliance with local well and thermal energy regulations. Requirements vary by jurisdiction and system type (vertical, horizontal, open-loop). Contact your local municipality, state energy office, or a licensed geothermal installer for specific permitting requirements in your area.