2025 PCSA Heating Check Up Renewal Heating Maintenance Checked wire connections. Control board was free of codes. Replaced filter. Flushed drain line. Burners were clean. Cleaned flame sensor. CO levels were within normal range. Blower motor is starting to wear out but operational. Puron levels were within normal range. Defrost mode was operating normally. Everything was clean and checked out well. System is operating normally at this time.