Don-Martin Heating, Cooling & Geothermal Inc.
Don-Martin Heating, Cooling & Geothermal Inc. is a HVAC provider serving Janesville, WI. Rated 5.0★ with 26 Google reviews. See services, review signals, and request a quote.
HVACJanesville, WI
On this page
Company overview
- TradeHVAC
- Service areaJanesville, WI
- Google rating5.0★ (26 reviews)
- Phone(608) 758-9882
- AddressJanesville, WI 53545, USA
Photos
Photos from Don-Martin Heating, Cooling & Geothermal Inc.
What customers say
“My A/C unit kept freezing up on the inside and would stop working. I called up Don Martin and scheduled a time for a technician to come service the unit. Clay was able to diagnose the issue and had it…”
“Clay was very responsive and very helpful with estimate and timeframe of installation. He got my family all setup with a new furnace and central air unit. Thanks to Sam and Cliff for setting it up. Th…”
“Spoke with Clay, he was very helpful in getting me in touch with folks that could help with my mechanical problem and questions. I was out of his area of Service, by about 80 miles. But Clay took th…”
“Called Don-Martin Heating, Cooling & Geothermal in the morning and they were able to have a technician come out the same afternoon to look at my a/c unit. Sam, the technician was very professional an…”
“Great company! Had no heat, called and got me in as soon as possible. Got here earlier than appointment time! Found the problem quick. (Even put up with our animal thinking his tool box was a playg…”
Key highlights
Strengths
- Highly rated (5.0★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Don-Martin Heating, Cooling & Geothermal Inc. offer?
Don-Martin Heating, Cooling & Geothermal Inc. provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Janesville, WI.
What is Don-Martin Heating, Cooling & Geothermal Inc.'s rating?
Don-Martin Heating, Cooling & Geothermal Inc. has a 5.0 out of 5 star rating based on 26 Google reviews.
Is this company licensed in Wisconsin?
All listed providers have a verified Wisconsin contractor license at time of publication. You can verify on the Wisconsin Department of Safety and Professional Services (DSPS) — Dwelling Contractor certification (plus municipal HVAC licensing) lookup at https://licensesearch.wi.gov/.
Does Don-Martin Heating, Cooling & Geothermal Inc. offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Wisconsin Department of Safety and Professional Services (DSPS) — Dwelling Contractor certification (plus municipal HVAC licensing) · Company data: verified business records + Google Business profile
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