OEM Carrier Pressure Switch with Bracket for Model GB1AAV024045AFJA (HK06WC090)

This OEM pressure switch with mounting bracket is the factory-specified replacement for the Carrier GB1AAV024045AFJA gas furnace. The pressure switch monitors negative pressure created by the inducer motor to confirm proper venting before allowing ignition. When this switch fails or sticks open, the control board cannot verify safe draft conditions — causing the furnace to lock out before the ignition sequence ever begins. Common symptoms include a spinning inducer with no further startup activity, a flashing fault code indicating a pressure switch error, or repeated failed ignition attempts with no spark or gas.

• Specs: OEM-rated water column (W.C.) pressure setting factory-matched to model | Includes integrated mounting bracket | 1/4" spade terminals | Rated for Carrier GB1AAV024045AFJA application
• OEM vs Generic: This is a genuine OEM Carrier part (HK06WC090) with the precise W.C. rating required by your furnace. Aftermarket pressure switches frequently carry incorrect trip points, causing nuisance lockouts or — more dangerously — failing to detect true venting problems.
• Install difficulty: 3/5 — Shut off power and gas before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a manometer to verify hose integrity. Inspect rubber pressure hose for cracks or blockages before installing new switch, as a clogged hose is a common root cause of switch failure.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GB1AAV024045AFJA gas furnace. Verify your existing part number on the switch body or furnace wiring diagram before ordering — W.C. ratings vary across model variants. Our fitment team is available to confirm compatibility before you purchase. Order today and get same-day shipping on all in-stock OEM parts.