Gas heating preventative maintenance performed Check filter - 16x25x1 new today Clean flame sensor Ohm test igniter: spark n/a no concerns Inspect wiring for loose connections and/or hot spots - none found Inspect exhaust flu - no concerns 4” round Set thermostat for heat Check amp draw on inducer motor: 1.0 Check delta T - 50° running hot building at 78° upon arrival Furnace is in optimal running conditions