Gas heating preventative maintenance performed Check filter - 16x25x4 due soon (16x25x1 was clogged causing overheat) Clean flame sensor Inspect burners - no concerns Ohm test igniter: 56.3 Inspect wiring for loose connections and/or hot spots - none found Check humidifier pad: new today owner supply Inspect exhaust flu - no concerns Set thermostat for heat Check amp draw on blower motor: 4.3 Check amp draw on inducer motor:0.42 Check delta T - 42° Furnace is in optimal running conditions