Cleaned & checked 2 gas furnaces. Inspected heat exchangers & flue venting. cleaned burners & flame sensors. Checked voltage & amp draw of motors. Test capacitors. First floor system: Inducer: 0.08/0.25A. Blower: 2.3/4.0A. Checked manifold gas pressure: 1.9/3.6. Second floor system: Inducer: 0.07/0.24A. Blower: 2.0/3.0A. Checked manifold gas pressure. 1.9/3.6. Replaced air cleaner medias. Adjust blowers. Clean and check 2 humidifiers. replace pads. checked water flow and drains.