After getting a heating installation Tempe AZ, many homeowners usually overlook the routine maintenance of their furnace. However, this can sometimes lead to costly repairs and untimely system replacement. Therefore, it is essential to tune up a heating device either yourself or by calling expert technicians. Some of the steps one must follow during heating maintenance are as follows:  Examine the thermostat  Change or clean the air filters  Keep the outdoor device clean  Check all the electric connections  Keep the air ducts clean