Came out today for QC visit on new install. Started inside at t-stat activsted test mode to extensively check over unit. System is level all wiring is good no error codes. Getting over 20 degree temp split. Drain line is draining at this time. System is clean. And operating as designed. Outside unit is level all electrical components are good and tight. All components are operating as designed. Pressures were within manufacturer specifications. Unit in good working order upon departure. Added more silicon around outdoor unit conduit and cutback bush that was blocking back side of unit. Recommended to customer to apply herbicide to stump to prevent regrowth. Also noticed both bathroom exhaust vents were disconnected from exterior wall; leaving gaping holes in the siding. Left estimate for repair.