Complete 1 system furnace repair and preventative maintenance check. New comfort club membership. Replaced dirty filter. Found dirty/ rusty evaporator coil, burnt/pitted main switch, the starter is weak and compressor draws high amps. Found outdoor system on 2 sides of the coil needs more clearance for entering the air, at least 12" of clearance. Tested Freon and got 9-degree subcooling. Freon is good, Installed compressor saver and clean evaporator coil. The system is heating normally.