Cleaned and checked air conditioner. Checked drains. Checked voltage and amperage draw of motors. Tested capacitors. Checked Freon level. Topped off Freon to nearly full charge. Sub cooling: 10. Approach: 10. Cleaned condenser coil. Compressor: 11.8/12.0A.Condenser fan: .92A .ambient: 71. liquid line: 81 .suction line: circuit B: 57, circuit A: 48.metering device: TXVs . Suction pressure: stg2: 65(38) .head pressure: 170(91). Stage one cooling draws high amps. Not efficient.