OEM Carrier Pressure Switch w/ Bracket .33 WC for Model PG8UAA036065ACJA (HK06WC090)

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier PG8UAA036065ACJA gas furnace. The pressure switch is a critical safety component that monitors negative pressure created by the inducer draft motor during the startup sequence. It must close and confirm adequate draft before the control board advances to the ignition stage. When it fails or gets stuck open, the furnace locks out — often before the burners ever fire — leaving you with a no-heat call and a flashing fault code on the control board.

• Specs: Rating: –0.33 in. W.C. (water column) | SPST configuration | Includes factory mounting bracket | OEM part number HK06WC090 | Also replaces HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001, 326750-751, 310315-751, 310315-752
• OEM vs Generic: OEM pressure switches are calibrated to the exact –0.33 W.C. trip point specified for the PG8UAA036065ACJA. Generic aftermarket switches often carry ±15% tolerance, risking nuisance lockouts in cold weather or, worse, allowing the furnace to fire under unsafe draft conditions.
• Install difficulty: 2/5 — No special tools required. Turn off power and gas before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, and a multimeter to confirm switch continuity post-install. Always inspect the hose barb and rubber tubing for cracks before reusing — a split hose mimics a failed switch.
• Warranty: 1-year OEM manufacturer warranty from date of purchase. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Direct OEM fit for the Carrier PG8UAA036065ACJA gas furnace. This part also serves as a superseding replacement for multiple legacy Carrier, Bryant, and Payne pressure switch part numbers — verify the –0.33 W.C. rating on your existing switch label before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before every order.