OEM Carrier Pressure Switch w/ Bracket .33 WC for Model PG8UAA024065ACJA

This is the genuine OEM replacement pressure switch (part number HK06WC090) factory-specified for the Carrier PG8UAA024065ACJA packaged gas furnace. The pressure switch proves that the draft inducer motor is operating correctly before allowing the ignition sequence to proceed. It does this by detecting negative air pressure (vacuum) generated by the inducer — once the required pressure level is reached, the switch closes and signals the control board to continue startup. When this switch fails, the furnace will typically lock out before ignition, display a pressure-switch fault code, or cycle the inducer continuously without ever lighting the burner.

• Specs: Rated .33 W.C. (inches of water column) | Includes factory mounting bracket | Single-port diaphragm-style switch | 24V control circuit compatible
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances. Generic aftermarket switches often carry a ±15–20% W.C. variance that can cause nuisance lockouts, failed ignition attempts, or — worse — unsafe operation. OEM is the only reliable choice for a safety-critical component like this.
• Install difficulty: 2/5 — Before starting, power down the furnace at the disconnect and thermostat. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, and a manometer or magnehelic gauge if you want to verify pressure after install. Disconnect the rubber vacuum hose and two wiring terminals, unmount the bracket, and reverse the process with the new switch. Always confirm the hose is free of cracks, kinks, or moisture before buttoning up.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG8UAA024065ACJA packaged gas furnace. This part also supersedes and replaces earlier part numbers including HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, 326750-751, HK660001, 310315-751, and 310315-752. Always verify the W.C. rating on your existing switch and the part number on your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any doubt.