Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Replaced MERV16 air cleaner media. Clean and check humidifier, replace pad, checked water flow and drain. Blower: 1.7/2.3A . Inducer: 0.07/0.24A . Gas pressure: 1.7/ inches water column. Temperature rise: 50 . Supply: 122 . Return: 72 .