For over 60 years Great Lakes State Heating & Air Conditioning have offered quality, affordable services to the residents of Williamston, MI.

For all your heating and cooling needs, contact Great Lakes State Heating & Air Conditioning, Inc. of Williamston, MI. Our family owned and operated company has been providing quality, prompt, and professional services for over 60 years. Do not get caught with an old, inefficient heating and cooling system. Replace your older home heating and cooling equipment now with a new, high - efficiency Lennox Home Comfort System.