AC2 maintenance Indoor unit: Checked blower motor, checked coils, checked filter, checked ductwork, checked attic Insulation and ventilation, Cleared condensation line, checked all electrical connections and wires. Outdoor units: Cleaned outdoor coils, checked, capacitors, checked, contactors, checked Fan motors, checked compressors, checked pressures/Sub cooling and superheat, Checked all electrical connections and wires. Recommendations: Replace contactor on 5 Ton unit, replace TXV on one and a half ton unit, add safety float switches to both units primary lines.