OEM Carrier Pressure Switch with Bracket HK06WC090 for Model PG8UAA048091ADJA

This is the genuine OEM Carrier pressure switch with bracket (part number HK06WC090), the factory-specified replacement for the Carrier PG8UAA048091ADJA packaged gas furnace. The pressure switch is a critical safety component that monitors negative pressure created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When it fails or sticks open, the control board cannot verify a safe venting condition — causing the furnace to lock out before ignition, often with a fault code indicating a pressure switch fault.

• Specs: -0.33" W.C. (water column) rating | Includes factory bracket for direct bolt-in fit | SPST normally-open configuration | OEM Carrier part number HK06WC090
• OEM vs Generic: This is a genuine Carrier OEM switch calibrated to the exact set-point required by the PG8UAA048091ADJA control board. Aftermarket switches often carry ±10–15% set-point tolerance, which can cause nuisance lockouts or, more dangerously, allow ignition under unsafe venting conditions.
• Install difficulty: 2/5 — Power down and disconnect the furnace before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, wire labels or masking tape for marking hose and wire connections. Photograph all connections before removal. The included bracket allows direct swap to original mounting location.
• Warranty & Shipping: 1-year OEM factory warranty. Orders placed before 3 PM local time ship same business day from our warehouse.

Compatibility & Cross-Reference: Fits Carrier model PG8UAA048091ADJA packaged gas furnace. This part also supersedes and replaces: HK06WC088, HK06WC086, HK06WC076, HK06WC074, HK06WC073, HK06WC072, HK660001, 326750-751, 310315-751, and 310315-752. Always verify your unit's data plate and existing switch W.C. rating before ordering. Not sure it fits? Contact our parts team — we verify fitment before you buy.