Cleaned & checked condensing gas furnace. Inspected heat exchanger with scope. Checked flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Checked drain. Replaced air cleaner media. Clean and check humidifier, replace pad, checked water flow and drain. Blower: 2.6/6.8A . Inducer: 0.95/2.6A . Gas pressure: 1.7/3.6 inches water column. Temperature rise: 63/63 . Supply: 139/141 . Return: 76/78 .