The Carrier HK06WC069 is a direct-replacement draft inducer pressure switch engineered for Carrier and Bryant furnace systems. This switch monitors negative pressure generated by the draft inducer blower to confirm proper venting before allowing ignition -- a critical safety control that keeps your furnace operating safely and efficiently. Whether you are restoring a residential unit or maintaining a large RV or park-model furnace, this OEM-spec part restores correct pressure sensing without guesswork.
Draft inducer pressure switches are among the most commonly replaced furnace safety components. When the switch fails -- whether stuck open, stuck closed, or leaking internally -- the furnace control board will lock out ignition and often throw a diagnostic fault code. Replacing with the correct OEM part number, HK06WC069, ensures the switch opens and closes at the pressure setpoint Carrier engineered for your specific heat exchanger and venting configuration.
This part cross-references as NBK Parts number 20244, making it straightforward to verify you have the right component when ordering through HVAC supply or aftermarket channels.
Calibrated to the exact negative-pressure threshold Carrier specifies for compatible inducer assemblies -- no re-calibration needed after installation.
Designed to match the original mounting location, port diameter, and electrical connector of the factory switch it replaces on Carrier and Bryant furnace platforms.
Prevents ignition if inducer airflow is insufficient, guarding against combustion gas spillage and carbon monoxide risk inside the living space.
Also catalogued as NBK Parts 20244, giving technicians and DIY owners a reliable second reference number for sourcing and warranty verification.
The draft inducer motor pulls combustion air through the heat exchanger and exhausts it out the flue. As the inducer spins up, it creates a measurable negative pressure (vacuum) in the inducer housing. The pressure switch is plumbed to this housing via a small rubber hose. When the vacuum reaches the designed setpoint, the switch closes, signaling the control board that venting is confirmed and ignition can proceed.
A failed switch -- or a cracked, disconnected, or kinked pressure hose -- breaks this circuit. The board sees an open switch and refuses to fire the burner. Inspecting the hose and port for blockages or cracks before condemning the switch is always good diagnostic practice, but when the switch itself tests faulty, the HK06WC069 is the correct replacement for covered Carrier and Bryant models.