STI Heating & Air Conditioning, located in Schererville, IN, is your local, trusted source for all of your heating, air conditioning, and geothermal needs. Our technicians have over 20 years of experience providing residential and commercial heating and air conditioning service to Lake and Porter Counties and the surrounding area. Do you need geothermal HVAC or custom sheet metal work? We offer those services as well. We are licensed, bonded and insured and we stand behind all of our work. We also offer free estimates on new installs and financing is available. Call today to set up an estimate!