Cleaned & checked 2 gas furnaces. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Replaced air filters. Second floor system: Blower: 2.0A . Inducer: 1.0A . Gas pressure: 3.5 inches water column. Temperature rise: 57. First floor system: Blower: 2.3A, 1063cfm. Inducer: p.51A, 3ph . Temperature rise: 59 . Supply: 129 . Return: 70 . Clean and check humidifier, replace pad, checked water flow and drain.