Cleaned & checked 2 condensing gas furnaces. Inspected heat exchangers & flue venting. cleaned burners & flame sensors. Checked voltage & amp draw of motors. Test capacitors. Checked filters. Checked zoning system. Main system: Clean and check humidifier, replace pad, checked fan. checked water flow and drain. Blower: 7.1A. Inducer: 1.9A . Gas pressure: 3.6 inches water column. Temperature rise: 60 . Supply:133 . Return: 73 . Second floor system: Blower: 3.4A . Inducer: 1.9A. Gas pressure: 3.4 inches water column. Temperature rise: 61 . Supply: 130 . Return: 69 .