Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Checked filter: very dirty. Also, filter not pushed all the way back to cover opening. Test capacitor. Customer plans to replace air filter. Blower: 2.6A . Inducer: 1.45A . Gas pressure: adj. 3.5 inches water column. Recommend humidifier maintenance. Humidifier drain is old and restricted. Cleaned and checked air conditioner. Checked drain: Old and restricted small tubing. Checked voltage and amperage draw of motors. Tested capacitors. Checked Freon level. Cleaned condenser coil. Compressor: 5.6A . Condenser fan: 0.62A . ambient: 69 . liquid line: 81 . suction line: 53 . metering device: TXV . Suction pressure: 118-121(40) . head pressure: 246(83). Sub cooling low: two. Manufacturers recommended specs: 10 sub degrees cooling. Work suggested: Replace air filter every month or two. Humidifier maintenance with water pan