Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Replaced air filter. Clean and check humidifier, replace pad, checked water flow and drain. 8.4uA. Blower: 3.1A . Inducer: 0.08A . Gas pressure: 2.0 inches water column. Temperature rise: 53 . Supply: 123 . Return:70 . Flame:14.5uA. Suggestions: Need to add humidifier to maintenance plan at next renewal.