Broad Compatibility: Serves as a direct replacement for legacy models including 375-3/4-75 and LF174A-3/4-75

preventing cold spots in the radiator

ensuring efficient thermal transfer to the sump

supporting both maintenance of older units and modern refrigerant conversions

allowing for versatile configuration in both dehumidification and humidification sequences

Carrier HK42FZ025 Control Board 318172-701 Broad Compatibility: Serves as aMaintain the operational integrity of your residential heating equipment with the Carrier HK42FZ025 Ignition Control Board. This genuine OEM furnace control board is a direct replacement designed specifically for Carrier, Bryant, and Payne units to manage critical ignition sequences, gas valve timing, and blower motor cycles. Engineered for precision, the HK42FZ025 utilizes advanced 24 VAC circuitry to monitor safety sensors and provide diagnostic