OEM Carrier Pressure Switch w/ Bracket .33 WC — HK06WC090 for Model PG8UAA048091ACJA

This is the genuine OEM Carrier pressure switch with mounting bracket (part number HK06WC090), factory-specified for the Carrier PG8UAA048091ACJA packaged gas furnace. The pressure switch monitors negative pressure created by the inducer motor to confirm safe combustion airflow before allowing the ignition sequence to proceed. When it fails — or when the hose, port, or inducer is marginal — the switch will not close, causing the furnace to lock out before the igniter ever fires. Symptoms include a no-heat call, an inducer that runs but never advances to ignition, and a diagnostic fault code indicating a pressure switch fault or open pressure switch.

• Specs: Rated at .33 inches W.C. (water column) | Includes factory mounting bracket | SPST normally-open configuration | Direct OEM replacement, factory-matched setpoint
• OEM vs Generic: This is a genuine Carrier OEM part — not an aftermarket substitute. Generic pressure switches often deviate from the factory W.C. setpoint, causing nuisance lockouts, unsafe operation, or failure to prove inducer draft reliably. OEM ensures exact setpoint calibration every time.
• Install difficulty: 2/5 — Power off the furnace and verify zero voltage before starting. Tools needed: 1/4" nut driver, flat-head screwdriver, and a multimeter to confirm switch continuity. Photograph the hose and wiring connections before removal. The included bracket simplifies direct bolt-in replacement.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In stock and ships same business day from our warehouse.

Compatibility & Cross-Reference: Designed for the Carrier PG8UAA048091ACJA packaged gas unit. Also supersedes and replaces legacy part numbers: HK06WC088, HK06WC086, HK06WC076, HK06WC074, HK06WC073, HK06WC072, HK660001, 326750-751, 310315-751, and 310315-752. Always verify the W.C. rating on your existing switch before ordering. Order now — in stock and ships today.