OEM Carrier LP Gas Pressure Switch HK02LB008 / HK06WC091 for Model PG8JAA060090AEJA

This OEM Carrier gas pressure switch (part number HK02LB008, cross-references HK06WC091) is the factory-specified replacement for the Carrier PG8JAA060090AEJA packaged gas furnace unit. The pressure switch is a critical safety device that monitors the negative pressure (vacuum) created by the draft inducer motor. Before allowing the ignition sequence to proceed, it confirms the inducer is running at the correct speed and that the flue path is clear. When this switch fails or sticks open, the furnace will lock out on a pressure switch fault — typically shown as a fault code — before a single ignition attempt is made.

• Specs: LP / Propane Gas Pressure Switch | Cut-out setpoint: 6.5" W.C. | SPST configuration | Suitable for air, natural gas, or LP gas applications | Mounts horizontally or vertically
• OEM vs Generic: This is a factory-matched OEM part built to Carrier's exact setpoint tolerance. Generic aftermarket switches frequently deviate from the rated W.C. setpoint, causing nuisance lockouts, unsafe ignition sequences, or repeated draft-proving failures that are difficult to diagnose.
• Install difficulty: 2/5 — Power down and confirm zero voltage at the unit before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer (recommended to verify inducer vacuum post-install). Photograph hose routing and terminal wiring before disconnecting. The switch typically mounts near the inducer housing with a single rubber hose connection.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock — ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Engineered for the Carrier PG8JAA060090AEJA packaged gas furnace. Also compatible across multiple Carrier, Bryant, and Payne furnace and packaged unit platforms that specify the HK02LB008 or HK06WC091 pressure switch. Always verify the W.C. rating on your existing switch's label and confirm your unit's model number before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork required.