View visual findings from this job here - https://visionshare.xoi.io/?id=XA-AB08-1593F19BCC0E491D98FE7E33943A5CB Perform maintenance on crown Gas water boiler with two Hydro air handlers ( Unico and ADP ) With UV light kits: GAS CROWN WATER BOILER Shut power to boiler Removed boiler cover, Flame guard, and rollout switch, And all burner tubes Vacuumed and brushed all burner tubes, clean and clear Shut pilot at gas valve Vacuum and dusted out burner section of boiler under heat exchanger Vacuum and dusted boiler cabinet, Piping and all components, clean and clear Thermocouple is showing heavy everywhere and customer approved the replacement Removed existing thermocouple from gas boiler and installed brand new securing and pilot assembly and gas valve Relight pilot- ON inspect heat exchanger, Flue piping and damper motor- okay Secure and inspected all electrical wiring, and components Test and check expansion tank, Air vent, Water feed and backflow prevent, And relief valve- okay Rein