OEM Carrier Pressure Switch Assembly w/Bracket HK06WC069 for Model PG8JAA042090ADJA

This is the genuine OEM pressure switch assembly with mounting bracket for the Carrier PG8JAA042090ADJA gas furnace. The pressure switch is a safety device that monitors negative pressure (draft) produced by the inducer motor before allowing ignition to proceed. If the inducer fails to pull adequate draft — or if the pressure switch itself fails — the control board receives no proof signal and locks out the heat sequence entirely. Common symptoms include a furnace that starts the inducer but never reaches ignition, a blinking fault code indicating a pressure switch error, or a system that briefly attempts ignition and immediately shuts down.

• Part Number: HK06WC069 | Pressure Switch Assembly with Mounting Bracket | Single-stage operation | Factory W.C. rating: –0.27" W.C. break / –0.42" W.C. max make
• OEM vs Generic: This factory-original Carrier/Honeywell switch is calibrated to exact W.C. specifications for the PG8JAA042090ADJA. Aftermarket pressure switches often carry wider tolerances, risking nuisance lockouts or — more dangerously — failing to detect a true inducer fault.
• Install Difficulty: 2/5 — Power down and disconnect gas before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a digital manometer (recommended to verify draft pressure post-install). Always inspect the rubber hose port for cracks or blockages before condemning the switch.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PG8JAA042090ADJA packaged gas furnace. Before ordering, confirm the W.C. rating stamped on your existing switch matches this part. If you are diagnosing a pressure switch fault, also inspect the inducer motor, draft hose, and condensate drain for blockages — these are the most common root causes of pressure switch failures. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — ships today.