OEM Carrier LP Gas Pressure Switch for Model PG8JAA060090AGJA

This OEM LP gas pressure switch is the factory-specified replacement for the Carrier PG8JAA060090AGJA packaged gas unit. The pressure switch proves that the inducer motor has established adequate draft before allowing ignition — a critical safety interlock in the furnace control sequence. When this switch fails or drifts out of calibration, the control board cannot confirm proper venting, triggering a hard lockout before the burners ever fire. Common symptoms include the inducer running continuously with no ignition attempt, a flashing fault code indicating an open pressure switch, or a furnace that starts then immediately shuts off.

• Specs: LP (Propane) Gas Pressure Switch | Cut-out set point: 6.5" W.C. | SPST configuration | OEM part numbers: HK02LB008 (primary), HK06WC091, HK06WC100 (w/ bracket) | Cross-reference: GFS3451-4036
• OEM vs Generic: This is a genuine Carrier factory-authorized part matched to the exact W.C. rating for the PG8JAA060090AGJA. Aftermarket pressure switches frequently carry wider tolerances that can cause nuisance lockouts or — more dangerously — allow ignition under insufficient draft conditions.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: flathead screwdriver, needle-nose pliers, and a manometer to verify switch operation after install. Note: HK06WC100 variant includes a mounting bracket — confirm your bracket configuration before ordering.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PG8JAA060090AGJA packaged gas/electric unit. This listing covers three OEM part numbers in the same switch family — HK02LB008 (standard), HK06WC091, and HK06WC100 (with bracket). Verify your existing switch's W.C. rating and bracket configuration from the unit's data plate or wiring diagram before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — same-day shipping on all stocked items.