13 POINT MAINTENANCE CHECK-UP FOR 4 YR A/C SYSTEM. ADJUST BLOWER COMPONENTS, AND LUBRICATE ALL NECESSARY MOVING PARTS. CHECK VOLTAGE AND AMPERAGE ON MOTORS, CLEAN AND CHECK CONDENSER COIL. CHECK THERMOSTAT, AIRFLOW, AIR FILTER, FREON LEVELS, DRAINAGE, COMPRESSOR DELAY SAFETY CONTROLS, AND ALL ELECTRICAL CONNECTIONS.