Perform heating maintenance on four systems. Replace filters for all but RTU outside due to no stock on visit. Clean all flame sensors Check igniter on each system no concerns 16x25x1 new for entertainment room/gym 20x25x1 new 2nd floor 20x25x1 new 1st floor/basement All unit delta T within spec. Flush drain traps on 1st and 2nd floor main house units, basement had remnants of a mud wasp nest inside it All systems heating properly at this time. Test ran and inspected gym system but will return Friday to change the filter Replace air filter for gym system photo in file 24x30x2
