About S&J Heating and Insulation, Inc. Your Premier Geothermal Source in Lansing since 1981 Our 30 Years of Experience means that you can count on S&J Heating and Insulation, Inc. for all your WaterFurnace geothermal heating and cooling system needs, including ... planning assistance complete comfort system installation routine service and maintenance emergency repair energy-saving advice and consultation Our fully trained professional staff is dedicated to the complete satisfaction of customers throughout Lansing. After all, you've chosen the finest heating and cooling system available. We make sure that system continues to live up to your expectations, improving your home's efficiency and helping you cut energy costs. Contact S&J Heating and Insulation, Inc. today to get a free estimate and a cost savings analysis for your home.