Blue shield heating maintenance. Joe(JC)Ritchal 09/27/2023 Performed full system evaluation and safety inspection. I arrive from the customers annual fall service. The customer didn’t have any questions for me when I arrived. I checked the thermostat then the heat exchanger. I also checked the flue. I checked the blower motor, inducer motor and the gas valve. I checked with gas pressure and all the safeties. I also checked the burners. I also change the filter for the customer