Fall pm on 12/20/19 On arrival I sanded the flame rectification probe and checked burner arrangement the ignitor homes out to be in good condition checked all other electrical connections set unit to call for heat measured supply and return air temp measured voltage and amps inspected electrical connections checked drain and cleaned checked filter Ned to be replaced checked blower motor checked all other electrical connections checked temp rise DT 50.9 made for 35-65 unit tested unit operating normal at this time. Recommended DUCT Cleaning also Uv lights installation and hole house surge protector to avoid future problems customer accepted the option 1 duct cleaning customer schedule for December 30th between 11 to 3 pm. collected full amount of the duct $499:on C.C DUCT CLEANING