OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model PG8UAA048111AAJA

This OEM pressure switch with bracket is the factory-specified replacement part HK06WC090 for the Carrier PG8UAA048111AAJA packaged gas/electric unit. The pressure switch is a critical safety component in the inducer circuit — it proves that the draft inducer motor has established adequate negative pressure (draft) before allowing the control board to advance to the ignition sequence. When this switch fails or drifts out of calibration, the furnace will lock out before ignition, typically displaying a pressure switch fault code and leaving you with no heat.

• Specs: Includes factory-matched bracket assembly | Rated to OEM water-column (W.C.) set point for the PG8UAA048111AAJA | Single-port or dual-port design per OEM specification | SPST normally-open configuration
• OEM vs Generic: This OEM switch is calibrated to the exact W.C. trip point required by Carrier. Aftermarket substitutes often carry wider pressure tolerances that can cause nuisance lockouts, intermittent no-heat calls, or — in worst-case scenarios — unsafe draft conditions.
• Install difficulty: 2/5 — Turn off gas and 24V power before starting. Tools needed: 1/4" nut driver, flat-head screwdriver, and a manometer if verifying W.C. post-install. Disconnect the rubber hose and two wiring harness leads, swap the bracket-mounted switch, and reconnect. Always check for cracked or kinked pressure tubing while the panel is open.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered and factory-matched for the Carrier PG8UAA048111AAJA packaged gas/electric unit. Verify your existing switch's W.C. rating and hose port count against your unit's data plate and wiring diagram before ordering. Our technical team is available to confirm fitment — just reach out before you buy.