Heil Quaker ICP 1054627 Terminal Board 321702-401 Always verify your specific compressor

Always verify your specific compressor model number prior to installation

52" WC rating of the 12W53 is vital to maintain the furnace's original safety protocol and certification

It should show zero ohms (closed) to initiate defrost

avoid placing sensors near heating/cooling coils or where air is highly stratified without mixing

37-inch shaft length

Heil Quaker ICP 1054627 Terminal Board 321702-401 Always verify your specific compressorThe Heil Quaker ICP 1054627 Terminal Board is a critical OEM HVAC replacement part designed for precision circuit routing within International Comfort Products (ICP) residential and commercial units. This terminal board facilitates stable 24V low voltage connections between the thermostat, furnace control board, and peripheral components such as the compressor contactor and indoor blower relay. Engineered for exact fitment in brands like Heil,