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The Antunes Controls 801111321 is a versatile Air Differential
For safety and code compliance
Its recrystallized silicon carbide construction is designed for high-cycle industrial environments
capable of direct-switching electric heat stages and heavy motor loads
Designed for seamless HVAC valve repair
Heil Quaker ICP 1172809 Control Board R-410A The Antunes Controls 801111321 isReplacing a faulty Heil Quaker ICP 1172809 Control Board is essential for restoring the sequence of operation in high efficiency 2 stage furnaces. This genuine OEM 2 stage furnace control board acts as the central intelligence for your HVAC system, precision managing the hot surface igniter (HSI), inducer motor speeds, and variable speed blower timing. As a direct ICP 1172809 replacement part, it is engineered to handle the complex logic required for