Gas heating preventative maintenance performed Check filter - 210 popup - new today truck stock Clean flame sensor Ohm test igniter: Inspect wiring for loose connections and/or hot spots - none found Check humidifier pad: n/a Inspect exhaust flu - no concerns Set thermostat for heat Check amp draw on blower motor: 5.3amp Check amp draw on inducer motor:0.77amp Check delta T - 53° Furnace is in optimal running conditions