STI Heating & Air Conditioning

STI Heating & Air Conditioning is a locally owned HVAC contractor serving Schererville, Indiana, and surrounding Lake County communities. With a perfect 5.0-star rating across nine verified client reviews, the company has built its reputation on honest diagnostics and cost-effective repairs rather than aggressive upselling. The business operates Monday through Friday with hours designed to accommodate working homeowners, opening at 8:00 AM on Mondays and shifting to 9:00 AM for the remainder of the week.

What distinguishes STI Heating & Air Conditioning from larger regional operations is their commitment to repairing existing equipment whenever financially reasonable. Multiple reviewers specifically note that technician Ted declined to recommend a complete system replacement for a forty two year old cooling unit, instead identifying a hard start capacitor that restored the system for under two hundred dollars. This repair-first philosophy extends to their maintenance programs, which include thorough cleaning, refrigerant assessment, and component testing designed to extend the life of aging residential systems.

Local homeowner reviews highlight specific technicians by name, providing verifiable service examples. Ted, who appears in multiple reviews, diagnosed a failing zone motor causing an unusual moaning sound from a furnace, ordering the replacement part for future installation. Another reviewer notes Ted and Garrett responded to a maintenance request and identified the specific source of a customer's complaint rather than performing generic service. These named technician accounts, combined with consistent five-star ratings, suggest a team with deep familiarity with northwest Indiana residential HVAC systems.