CLEAN AND CHECK A/C. CHECK THERMOSTAT, CHECK CONDENSER COIL. INSTALLED 3.5 TON AC/FURN/COIL. MADE SURE SYSTEMS WAS INSTALLED PROPERLY. CHECK ALL ELECTRICAL CONNECTIONS, CHECK DRAINAGE, CHECK FREON LEVELS, CHECK VOLTAGE AND AMPERAGE ON MOTORS. MADE SURE WORK AREA WAS CLEAN WHEN LEFT. EVERYTHING IS RUNNING GREAT.