Performed heating maintenance on a 1995 Rheem 80% efficient natural gas furnace 20x25x4 filter is good Blower is clean Blower motor capacitor measures 14.1mfd, rated 15mfd Pulled and cleaned flame sensor Burners in good shape Igniter 3.8A Inducer 1.0A Blower 6.7A Gas pressure 3.5"wc No change in flame pattern or color after blower startup 50⁰ temperature rise Humidifier operating normally after turning up humidistat dial and switching Blower to on from auto at the thermostat No water leaks from it Water panel is new Dialed back water flow to reduce waste going down the drain Blower needs to run for humidifier to operate So either leaving the blower to run continuous to humidity without a heat call, or leaving the fan to auto and it will only humidify during calls for heat This is a personal preference. Humidifying with fan only will use more water Despite its age, furnace is still in healthy operating condition.