​​​​​"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." read more ...


"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 ...

- Upgrade to 95% ​Efficiency

- Replace Existing System

- Incentives for Upgrades

- Indirect Water Heating

- Combination Boiler/Hot

   Water Heating

- Free in-home estimates

- Options and Solutions

- Well-trained and Courteous

- Professional installation will

  get the job done right.

Wisconsin Cities Served

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

​​Wisconsin Counties Served 
Rock County, Wisconsin
Walworth County, Wisconsin
Dane County, Wisconsin
Jefferson County, Wisconsin
Green County, 

​​​​"wE'RE NOT COMFORTABLE Until YOU ARE"

heating, air conditioning, Geothermal & Indoor air Quality Contractor Meeting the  needs with OVER 40 years

-Economical

- No Carbon Monoxide

- Clean & Quiet

- Low Maintenance

- ​Incentives

​​​​​DON-MARTIN HEATING, COOLING & GEOTHERMAL  

- Under floor heating

- Wall heating systems
- Radiant ceiling panels

- Concrete Floors

​- Zoned Room Control

- Replacing or adding air conditioning?             

- Ask about Ductless Cooling


Illinois Cities Served

Durand, IL
Harvard, IL
Poplar Grove, IL
Capron, IL
Shirland, IL

South Beloit, IL
Capron, IL
Rockton, IL
Roscoe, IL




Free Pro 1 Digital Thermostat

with Purchase of a New Furnace and Air Conditioning Unit