Cleaned & checked 2 gas furnaces. Inspected heat exchanger & flue venting. cleaned burners & flame sensors. Checked voltage & amp draw of motors. Test capacitors. Checked filters. East system: Blower: 5.8A . Inducer: 1.62 . Gas pressure: 3.4 inches water column. Temperature rise: 59 . Supply: 130 . Return: 71. West system: Found run capacitor weak: 11.5%low. Customer declined repair at this time. Blower: 5.9A . Inducer: 1.52A . Gas pressure: 3.4 inches water column. Temperature rise: 56 . Supply: 127. Return: 71 .