OEM Carrier Furnace Pressure Switch HK06WC091 for Model PG8MAA060090AAJA

This OEM pressure switch (part number HK06WC091) is the factory-specified replacement for the Carrier PG8MAA060090AAJA gas furnace. The pressure switch is a critical safety component that monitors negative pressure created by the draft inducer motor before allowing the ignition sequence to proceed. When it fails, the furnace will lock out on a pressure switch fault — typically displaying an error code — and will not advance to ignition, leaving you with no heat. A failed pressure switch may also cause repeated short-cycling or a furnace that runs the inducer but never lights the burners.

• Specs: SPST (Single-Pole, Single-Throw) configuration | High-fire pressure switch | Factory Authorized Part manufactured by Honeywell | Cross-references: IS20027051N5065, 54505147 | Note: superseded by OEM replacement HK06MC110
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact W.C. (water column) setpoint tolerances. Generic aftermarket switches often carry wider tolerance bands that can cause nuisance lockouts or — more dangerously — fail to detect a true blocked flue condition, creating a safety hazard.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of replacement hose (inspect existing hose for cracks while you're in there). Photograph all hose and wiring connections before disconnecting. Verify inducer operation before confirming the switch as the failed component.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Fits Carrier model PG8MAA060090AAJA and is used across more than 700 Carrier, Bryant, and Payne furnace models including PG8MAA, PG8MEA, 58CVA, 58STA, and related series. Always verify your unit's data plate and existing switch W.C. rating before ordering. Our team is available to confirm fitment — reach out before you buy. Order today and your part ships the same business day.