View visual findings from this job here - https://visionshare.xoi.io/?id=XA-EE1C-7F34EFF5E144463985056630B7431582 Here to preform deep cleaning on first floor unico hydro air handler and replace expansion tank and relief valve on Weil McLain gas water boiler : GAS WATER BOILER REPAIRS: * shut power to system * shut water feed supply to system * close all supply and return ball valves on system * drain down boiler * removed existing expansion tank, drip leg and relief valve from system * prep new expansion tank and piping with teflon, tape and dope- Install and pipe in new expansion tank and relief valve into boiler piping * Install and pipe in brand new drip leg into relief valve * Open supply of water feed to boiler And filled system back up * Purge all air from boiler and heating/domestic hot water zones- okay * Confirm boiler pressure is normal, Water feed is open and all supply and return valves are back open on the boiler * Return power and test heating operation * Confirm all