OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model PG8DAA060135ACJA

This is the OEM factory-specified pressure switch with bracket for the Carrier PG8DAA060135ACJA packaged gas furnace. The pressure switch is a normally-open safety device connected to the inducer motor by a rubber hose. It monitors the negative pressure (draft) created by the inducer blower during the heating cycle. When the inducer reaches proper operating speed and generates sufficient draft, the switch closes, signaling the control board to proceed with ignition. If this switch fails — or if the hose cracks, the port clogs, or the diaphragm ruptures — the furnace will lock out before the ignition sequence begins, leaving you with a no-heat call and often a fault code pointing to pressure switch failure.

• Specs: -0.33 in. W.C. (water column) rating | Includes mounting bracket | Normally-open SPST configuration | Factory-calibrated diaphragm | OEM part number HK06WC090
• OEM vs Generic: This is a genuine Carrier OEM part — factory-calibrated to the exact -0.33 W.C. set point required by the PG8DAA060135ACJA. Generic pressure switches often carry wider tolerances that can cause nuisance lockouts in cold weather or, worse, fail to shut off on a true inducer fault, creating a safety hazard.
• Install difficulty: 2/5 — Turn off power and gas before starting. Tools needed: 1/4" nut driver, flathead screwdriver, and a digital manometer (recommended to verify switch operation post-install). Photograph the hose routing and wiring connections before removal. Inspect the rubber hose and port for blockage or cracks while the old switch is out.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8DAA060135ACJA packaged gas furnace. This part also supersedes earlier Carrier pressure switch part numbers including HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001, 310315-751, 310315-752, and 326750-751 — always verify the W.C. rating on your existing switch before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — reach out today and we'll ship your order the same business day.