View visual findings from this job here - https://visionshare.xoi.io/?id=XA-15F7-C42FE1079C3B40AD8268053E2695DA6F completed heating maintenance One steam boiler with a hot water loop Removed and clean burners and spark igniter and burner tray remove pressuretroll and cleaned Also flushed lower cut off. And checked McDonald miller Automatic water feed reset water feed and checked the automatic flue damper Tested systems operation left working upon checking the chimney base Recommended to homeowner to have it inspected domestic hot water tank is located next to the chimney clean out. Homeowner was with me. And as a courtesy checked the expansion tank, expansion tank is defective highly recommend to replace