Description
HEIL 1172809 Two-Stage Furnace Control Board – OEM HK42FZ020 Replacement
The HEIL 1172809 Furnace Control Board (Model HK42FZ020) is a factory-authorized replacement for two-stage HEIL gas furnace systems. This advanced control board manages the ignition sequence, blower fan operation, safety sensors, and dual-stage heating cycles to deliver optimized comfort and energy efficiency.
Ideal for systems equipped with two-stage burners, this board ensures that the furnace can modulate heat output based on indoor demand—operating in low-fire for milder days and high-fire for colder temperatures. Designed to restore or maintain reliable system operation, it offers a plug-and-play fit for compatible HEIL models.
Key Features:
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OEM replacement for HEIL two-stage gas furnaces
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Manages ignition, blower operation, and dual-stage heat output
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Ensures safe startup and shutoff sequences
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Helps maximize efficiency and indoor comfort
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Factory-built to support HEIL system specifications
Alternate Part Numbers:
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3420M097182
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CEPL130591-41-I
Whether you're replacing a faulty board or upgrading a worn-out control, the 1172809 offers trusted performance and seamless integration in HEIL branded heating systems.
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