OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model GB3AAV024050ADJA

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier GB3AAV024050ADJA gas furnace. The pressure switch monitors negative pressure created by the inducer motor to confirm proper draft before allowing the ignition sequence to proceed. When this switch fails or sticks, the control board cannot verify safe venting conditions and will lock out the furnace — leaving you with no heat. Common symptoms include a furnace that attempts to start but shuts down before ignition, a blinking fault code indicating pressure switch failure, or an inducer motor that runs continuously without the burners firing.

• Specs: Includes factory mounting bracket | Correct W.C. (water column) rating matched to Carrier GB3AAV024050ADJA inducer assembly | Single-port design | OEM part number HK06WC090
• OEM vs Generic: This OEM switch is calibrated to the exact water column rating required by the GB3AAV024050ADJA. Aftermarket pressure switches frequently use imprecise W.C. thresholds, causing nuisance lockouts in cold weather or — more dangerously — allowing ignition under poor venting conditions.
• Install difficulty: 2/5 — Shut off power and gas before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a multimeter to confirm switch continuity. The included bracket simplifies reinstallation to the original mounting position. Photograph all hose and wire connections before removing the old switch.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GB3AAV024050ADJA gas furnace. Always verify the W.C. rating printed on your existing pressure switch before ordering to ensure an exact match. Our parts specialists are available to confirm fitment — order with confidence and get your furnace back online fast.