2ND MAINTENANCE TUNE-UP PER SERVICE AGREEMENT FOR 1 YR HT UNIT. RENEWED SERVICE AGREEMENT. CLEAN AND CHECK BURNERS AND BURNER OPERATION. LUBRICATE ALL NECESSARY MOVING PARTS, AND ADJUST BLOWER COMPONENTS. CHECK MANIFOLD GAS PRESSURE AND FOR PROPER VENTING. CHECK THERMOSTAT, ENERGY CONSUMPTION, HIGH LIMIT CONTROL, HEAT EXCHANGER, FAN CONTROL, AND ALL ELECTRICAL CONNECTIONS. EVERYTHING IS RUNNING GREAT.