Perform smiley preventive maintenance inspection 1 system AC tune up. 1 of 2 bisits. added 2# of freon with NO warranties. -Filter: 14"25"1" -Flush drain line: needs EZT and wet switch -Clean and tighten electrical connections and wires: -Check electrical components: -High voltage wiring -Blower motor:??xx amps -Condenser fan motor: .60 amps. -Compressor: 9 amps. -Dual capacitor: 30/5uF -Contactor: 241Volts across -Breaker: 60 amp -Monitor refrigerant levels: ???Low: 70psi High: 220psi super heat: x10'F Sub cool: 10'F -Rinsed out condenser coil -Evaporator coil: 20plus years old. -Inspect flue/vent pipe: -Check gas valve and gas line: -Check duct work:???? -Measure temperature difference:20* -Outdoor ambient temperature: 91*'F -Cycle system operating at this time but is 20 plus years old and anything may go out at anytime. ??*Equipment normal wear and tear