Welcome to Don-Martin Heating, Cooling & Geothermal

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Are you one of many who have considered using renewable energy sources?

With the rising cost of fossil fuels it is forcing many to find alternative ways to save money while trying to make there homes more comfortable. Installing a WaterFurnace geothermal system can cover both of those concerns. Our trained personnel will provide you with an accurate analysis of your homes energy use and how you can save up to 70% on your energy costs in heating, cooling and domestic hot water heating.

Of course you could replace your existing heating and cooling system with another one and only save a minimum amount of money. However with a WaterFurnace geothermal system you will not only recover your investment in a few years but have enhanced comfort levels in your home. You will also feel good about the choice you have made since it emits no carbon dioxide, carbon monoxide or greenhouse gases. And, you also eliminate that inefficient loud and ugly outdoor cooling unit.

Let our friendly staff and certified installers provide you with what you deserve, more money in your pocket and a way to save our natural resources.

Save With A Geothermal HVAC System:

Learn More About Geothermal Heating And Cooling



Don – Martin Heating and Cooling Inc. has provided Janesville heating and air conditioning to many homes since its founding in 1998. We have formed many trusting friendships along the way. Of course those who know us have come to appreciate the more than 35 years of experience we bring to every project.

Many have come to know that we provide quality products that are designed to bring you the best comfort for your investment. We pride ourselves on gaining your trust and providing a solution for any type of installation. This fact is evident due to the many types of projects we have done, from Renewable Energy installations to simple sheet metal repairs. Homeowners, builders, property management companies, architects and businesses of all sizes have come to appreciate the experience we bring to every job.

We are confident that as a family owned company we can make you feel comfortable from the planning stage to the final finish. Our commitment to provide many years of skill combined with modern technology is going to give you the comfort you deserve

Come see our products

Contact us anytime!

our services

  • Geothermal Heating & Cooling
  • Furnace Replacements
  • Air Conditioning Replacements
  • Boiler Replacements
  • Radiant Heating & Cooling
  • Wood Heating Boilers
  • New Construction
  • Light Commercial
  • Indoor Air Quality Products
  • 24 Hour Access to Service
    What We Sell
  • We also offer extended warranties

Customer Testimonials

  • "Clay and his staff are “top-notch” responding to all our needs and requests.  They continue to work through situations eliminating any concerns and meeting all expectations."
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  • "We actual kept the house 2 degrees warmer in the winter and 3 degrees cooler in the summer then we did with our old system, so the savings could be even greater than this."
    ...read more

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3500 Newville Rd, Janesville, WI 53545 | Phone: 608-758-9882 | Fax: 608-758-984

Regions Served: Don Martin Heating and Cooling Provides Products and Services To The Following Communities and Counties In Southern Wisconsin and Illinois:

Wisconsin Counties Served Wisconsin Cities Served Illinois Cities Served
Rock County, Wisconsin
Walworth County, Wisconsin
Dane County, Wisconsin
Jefferson County, Wisconsin
Green County, Wisconsin
Janesville, WI
Elkhorn, WI
Delavan, WI
Whitewater, WI
Fort Atkinson, WI
Milton, WI
Edgerton, WI
Macfarland, WI
Madison, WI
Evansville, WI
Orfordville, WI
Darien, WI
Beloit, WI
Lake Geneva, WI
Mukwonago, WI
East Troy, WI
Lake Mills, WI
Brodhead, WI
Monroe, WI
Deerfield, WI
Oregon, WI
Evansville, WI
Albany, WI
Juda, WI
New Glarus, WI
Jefferson, WI
Johnson Creek, WI
Stoughton, WI
Cambridge, WI
Walworth, WI
South Beloit, IL
Rockton, IL
Roscoe, IL
Durand, IL
Harvard, IL
Poplar Grove, IL
Capron, IL
Shirland, IL