OEM Carrier Pressure Switch with Bracket for Model GB1AAV024055AAJA — HK06WC090

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier GB1AAV024055AAJA 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 ignition to proceed. When this switch fails or sticks open, the control board cannot verify safe draft conditions — resulting in a no-heat lockout, a blinking fault code, or a furnace that runs the inducer but never advances to ignition. Replacing it with the correct OEM part ensures exact pressure rating compliance and reliable operation.

• Specs: OEM part number HK06WC090 | Includes factory mounting bracket | Rated to exact W.C. (water column) specification for the GB1AAV024055AAJA | Single-port design matched to factory inducer assembly
• OEM vs Generic: OEM pressure switches are factory-calibrated to the precise W.C. trip point for your specific furnace model. Aftermarket switches often carry wider tolerances that can cause nuisance trips, failed ignition sequences, or — more dangerously — allow ignition under inadequate draft conditions.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a manometer (recommended to verify W.C. after install). Disconnect the rubber hose and two-wire harness, unbolt the old bracket, and reverse the steps to install. Always check for cracked hoses while the furnace is open.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GB1AAV024055AAJA gas furnace. Confirm your existing part number on the switch body or your unit's service label before ordering. If you need fitment verification, our HVAC parts specialists are available to confirm compatibility before you purchase — no guesswork required.