View visual findings from this job here - https://visionshare.xoi.io/?id=XA-7C6F-2EC269DCC9E54AF4BF713FAF6F43BD7D Preform maintenance on (1) gas water boiler with (2) hydro air handlers and (1) ductless heat pump for garage gym: GAS WATER BOILER: power down equipment at arrival removed boiler cover door removed flame guard, roll out switch, burner tubes and igniter vacuumed and dusted out burner section on boiler under heat exchanger vacuumed and brushed all burner tubes clean and clear vacuumed and dusted boiler cabinet, components and all piping cleaned flame sensor with copper bristle brush and polished with steel wool inspected heat exchanger and flue piping- ok reinstalled all burners, igniter, flame guard and roll out switch test and inspect water feed / back flow, air vent, expansion tank (60) and relief- okay secured and inspected all electrical wiring, connections and components return power to system boiler fires for DHW- normal operations circulator pump is on and runni