Blue shield club heating maintenance. Joe(JC)Ritchal. 12/29/2023 Performed full system evaluation and safety inspection. Arrived to perform the customers annual fall service. The customer didn’t have any questions for me so I went ahead and got started with the maintenance. I took the heat exchanger and safeties along with the blower and heating components. I performed the Carbonazo test and clean the flame sensor and also change the filter for the customer. The system is operating correctly at this time.