Scope: Provide and Install new Navien high efficiency, condensing, recirc-capable tankless water heater. Includes calculating proper gas line size, turn off water supply to home, relieve pressure from system, empty contents of water heater, disconnect hot and cold connections, remove old vent line connections, disconnect T&P line, remove old gas whip, dispose of old water heater, mount new high efficiency unit in place, rework hot and cold water lines to connect unit, install new pvc venting through exterior wall, reconnect T&P line, install sediment trap on gas line along with new gas supply, run condensate drain either through exterior wall or into pump (run discharge to exterior location and prevent freezing), program tankless heater by setting board to correct parameters, connect to power supply, test and clean up work area, register warranty, take away old unit. Does NOT include outlet or circuit Installed a Navien high-efficiency condensating recirculation tankless water heater