Williamston area heating and cooling

GLS features Lennox and Maytag products to heat, cool and clean the air in your home. GLS also services furnaces, air conditioning systems, boilers, water heaters and more.

Great Lakes State Heating & Air Conditioning is located in downtown Williamston, Michigan, where we have proudly served the area since 1976. As the area's local heating and cooling company, GLS aims to far exceed our customers' expectations.

If you have a problem after hours, call us. We make runs until midnight. If you have a question, stop in or call us. If you see us around town, ask us a question or schedule your next maintenance appointment. We are there for our customers and are proud to work with you.

Pouring money into an inefficient system?

Avoid the high energy bills that come with an old, inefficient heating and cooling system. Call us today and replace your home's heating and cooling equipment with a new, high-efficiency home comfort system.

Lennox and Maytag make some of the most energy-efficient heating and cooling products on the market. When you choose GLS to upgrade your system, you save hundreds of dollars right away and thousands over the life of your new system. Put money into your pocket instead of the monthly fuel bill!


Primarily serving the following areas

Williamston, Webberville, Dansville, Shaftsburg, Perry, Fowlerville, Howell, Holt, Haslett, Morrice, Bath, Laingsburg, Okemos, East Lansing, Lansing, Mason, Stockbridge, Gregory