Tech serviced unit. Upon arrival tech found water spicket in the front working but one in the back by the unit was not. Tech informed customer. Tech found excessive bacteria build up inside furnace. Tech found evaporator coil to be severely rusted. Tech believes a small leak is starting to form(tech took a video). Tech also found condenser coils to have excessive build up and recommends getting it cleaned out. Unit is heating and cooling efficiently. Customer wants an estimate on new evaporator coil.