OEM Carrier SPST High-Fire Pressure Switch HK06WC091 for Model PG8MEA060110AAJA

This OEM Carrier pressure switch (part number HK06WC091) is the factory-specified draft-proving switch for the Carrier PG8MEA060110AAJA gas furnace. The pressure switch monitors the vacuum produced by the inducer blower motor before allowing the ignition sequence to proceed. If the inducer is not moving enough air — due to a blocked flue, cracked hose, or failed motor — the switch stays open and locks out the furnace, protecting against unsafe combustion. When this switch fails internally, the furnace will typically enter a no-heat lockout immediately after the inducer starts, even when the inducer and venting are functioning correctly.

• Specs: SPST (Single-Pole, Single-Throw) | High-fire pressure switch | Factory-calibrated W.C. set point | Honeywell-manufactured factory authorized part | Direct OEM replacement for Carrier, Bryant, and Payne gas furnaces
• OEM vs Generic: OEM pressure switches use factory-calibrated diaphragms that hold the exact W.C. set point over thousands of cycles. Generic aftermarket switches often drift out of tolerance, causing nuisance lockouts or — worse — failing to open when they should, creating a flue safety hazard.
• Install difficulty: 2/5 — Disconnect power before starting. Tools needed: 1/4" nut driver, flathead screwdriver, manometer (for verification). Label the port hose before removal. Verify hose integrity and inducer performance before condemning the switch.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse in original Carrier packaging.

Compatibility: Engineered for the Carrier PG8MEA060110AAJA gas furnace. Also fits many Carrier, Bryant, and Payne gas furnace models sharing the same draft-inducer and venting configuration — confirm your model and data-plate W.C. rating before ordering. Note: HK06WC091 has been superseded by updated OEM part HK06MC110; our listing ships the current authorized replacement. Questions about fitment? Our HVAC parts team verifies compatibility before you buy — contact us today. Order now and your part ships today.