CAME OUT ON A SERVICE CALL, NO AC. CHECK THERMOSTAT, CHECK AIR FILTER, CHECK AIRFLOW, CHECK ALL ELECTRICAL CONNECTIONS. INSTALLED 3T 3P PIG 12YR P&L. MADE SURE EQUIPMENT WAS INSTALLED PROPERLY. MADE SURE WORK AREA WAS CLEAN WHEN FINISH. CHECK GAS PRESSURE AND FOR PROPER VENTING. EVERYTHING WAS RUNNING GREAT.