View visual findings from this job here - https://visionshare.xoi.io/?id=XA-DE27-6264B03D571941738D54558520D66897 Completed heating maintenance on one Hot water boiler removed and cleaned a igniter and flame sensor and clean Burners and burner tray also checked electrical connections and components and checked expansion tank Turned system on and checked operations also checked natural gas lines from shut off valve to boiler And checked for carbon monoxide, none detected left system working.