Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Found run capacitor weak: 11%low. Replaced capacitor and tested amp draw. customer declined humidifier service. Adj Blower: H:3.4A . Inducer: 0.6A . Temperature rise: 61 . Supply: 139 . Return: 78 .