cleaned & checked Condensing gas furnace. Inspected heat exchanger & flue venting. Cleaned burners & flame sensor. Checked filter. Checked drain. Checked voltage & amp draw of motors. Clean and check humidifier, replace pad, checked water flow and drain. Blower: 6.2A . Inducer: 1.76A . Gas pressure: 3.4inches water column. Temperature rise: 57 . Supply: 133 . Return: 76 .