Heating Maintenance Performed Upon arrival system is working and operational. I began my maintenance in the attic by performing a duct leakage inspection. I then proceeded to the furnace unit, I checked and tightened electrical connections. I inspected the heating components for proper operation and wear. Burners were inspected for proper operation. Flame sensor was cleaned. Condensates lines were inspected for proper drainage. Static pressures and temperature splits were taken. Filter has been changed at this time, home owner supplied. Blower housing and wheel was inspected for balance and dust build up. Air supply was measured. Inspected safety switches as well as inspected home for fire and carbon monoxide detectors. Upon departure system is working and operational.