OEM Carrier Pressure Switch HK06WC091 for Model PG8MAA024045AAJA

This OEM pressure switch (part number HK06WC091) is the factory-specified replacement for the Carrier PG8MAA024045AAJA gas furnace. The pressure switch is a critical safety component that confirms the induced draft blower is creating adequate negative pressure before allowing ignition to proceed. When it fails or sticks open, the control board will lock out the furnace before reaching the ignition stage — leaving you with a no-heat call and a blinking fault code. Common failure symptoms include the inducer motor running continuously with no ignition, or an error code indicating an open pressure switch circuit.

• Specs: OEM part number HK06WC091 | Factory-calibrated W.C. (water column) rating matched to PG8MAA024045AAJA | SPST normally open configuration | Includes factory wiring harness connector
• OEM vs Generic: This is a genuine Carrier OEM pressure switch manufactured to exact W.C. specifications. Aftermarket switches frequently carry wider pressure tolerances that can cause nuisance lockouts or, worse, unsafe ignition conditions — making OEM the only recommended choice for this safety-critical component.
• Install Difficulty: 2/5 — Straightforward swap once the furnace cabinet is open. Tools needed: 1/4" nut driver, needle-nose pliers, and a manometer (recommended to verify W.C. rating post-install). Always shut off power and gas before servicing. Inspect inducer hoses and port for blockage before replacing the switch.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PG8MAA024045AAJA 80% AFUE gas furnace. Always cross-reference the W.C. rating stamped on your existing switch with the replacement before installation. If you're unsure of fitment, our HVAC parts specialists can verify compatibility before you order — contact us before purchasing.