Gas heating preventative maintenance performed Check filter - 20x25x4 Clean flame sensor set gas to 3.2 from 3.6 Set ac speeds for 1275cfm 3.5 ton Inspect burners - no concerns Ohm test igniter: 56.7 Inspect wiring for loose connections and/or hot spots - no concerns Check humidifier pad: new today Inspect exhaust flu - no concerns all connections tight Set thermostat for heat Check amp draw on blower motor: 4.92 Check amp draw on inducer motor:0.83 Check delta T - 63° Furnace is in optimal running conditions