OEM Carrier High-Fire Pressure Switch HK06WC091 / HK06WC092 for Model PG8JVA036070AAJA

This OEM Carrier high-fire pressure switch (part number HK06WC091) is the factory-specified replacement for the Carrier PG8JVA036070AAJA gas furnace. Also available as HK06WC092, which includes the pre-attached pressure tube for a plug-and-play swap. The pressure switch is a critical safety device that proves the inducer motor is operating at the correct RPM and generating adequate negative pressure before allowing the furnace to proceed to ignition. When it fails or sticks open, the furnace will lock out — typically before the igniter ever glows — leaving you with no heat and a flashing fault code on the control board.

• OEM Part Numbers: HK06WC091 (pressure switch only) | HK06WC092 (pressure switch with pressure tube included) | Factory Authorized Part manufactured by Honeywell for Carrier
• OEM vs Generic: This is a genuine OEM Carrier part matched to the exact water column (W.C.) set-point of the PG8JVA036070AAJA. Aftermarket pressure switches are frequently calibrated to incorrect trip thresholds, causing nuisance lockouts or, worse, failing to protect against a blocked flue — always use OEM on safety-critical components.
• Install Difficulty: 2/5 — Power the furnace off at the disconnect before beginning. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter (to verify open/closed switching). Photograph all hose and wiring connections before removal. The HK06WC092 variant saves the extra step of sourcing or transferring the pressure tube.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8JVA036070AAJA gas furnace. Note that HK06WC091 has a known supersession history — if you have any fitment questions or need to confirm the correct W.C. rating against your unit's data plate, our team will verify compatibility before you order. Order today and get your furnace back online fast.