Siemer Heating & Cooling, Inc., is located in Highland, IN. We serve Orland Park, Illinois, Northwest Indiana, and the surrounding areas with HVAC sales, service and parts. We provide fast, quality work on all makes and models of heating and air units. We even provide 24 hour emergency service. No matter the season, our expert technicians can equip you with a unit that is sure to please. Free estimates are available on equipment replacement. We also accept credit cards for your convenience. Call today to schedule an appointment!