As an essential furnace safety switch

Easy Integration: Mounts directly to 1/2-inch shafts or 3/8-inch shafts with an adapter

Field testing is performed by jumping the "Test" and "Test Common" terminals

this board facilitates precise communication between the Smart System control module and peripheral components

Optimized Motor Torque: Ensures rapid compressor acceleration by managing the start capacitor circuit with precision 332V switching

Carrier 334357-756 Heat Exchanger 318518-761 As an essential furnace safetyThe Carrier 334357 756 Secondary Heat Exchanger is a critical OEM replacement part engineered for high efficiency condensing furnaces. As a genuine RCD part, this stainless steel condensing heat exchanger is designed to capture latent heat from combustion gases, ensuring your Carrier HVAC system maintains its AFUE rating. For contractors performing a furnace heat exchanger replacement, this component provides the precise fit and thermal transfer