We're Chelsea's Primary Geothermal Contractor! Chelsea, Michigan, homeowners have all kinds of reasons for wanting a geothermal heating and cooling system: phenomenal comfort all year – no matter how crazy the seasonal variations smooth operating efficiency energy performance (They would look forever to find a more "green," more natural way to heat and cool their homes!) significant – sometimes outstanding – savings on their energy bills superior installation and service from Haley Mechanical, Chelsea's geothermal professionals. Find out more about what a geothermal heating and cooling system can do to improve your family's comfort. Look at our Geothermal Savings Calculator. Then contact Haley Mechanical. We sell, install, and maintain WaterFurnace geothermal systems, the very best available today.