OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model GB1AAV036065ABJA

This is the OEM factory-specified pressure switch with mounting bracket for the Carrier GB1AAV036065ABJA gas furnace. The pressure switch monitors negative air pressure created by the inducer draft motor to confirm proper venting before allowing ignition to proceed. When this switch fails or sticks open, the furnace control board cannot verify inducer operation and will lock out the heating cycle entirely — resulting in a no-heat condition with no ignition attempt. Common symptoms include the inducer running but the furnace never advancing to the ignition stage, or a flashing fault code indicating a pressure switch error.

• Specs: OEM Part Number HK06WC090 | Includes factory mounting bracket | W.C. (water column) rating matched to Carrier GB1AAV036065ABJA specifications | Single-port pressure switch design
• OEM vs Generic: This OEM Carrier pressure switch is calibrated to the exact water column rating required by your furnace. Generic or mismatched switches can trip too early or too late, causing nuisance lockouts or unsafe ignition attempts. Always replace with the factory-specified part.
• Install Difficulty: 3/5 — Disconnect power and gas before servicing. Tools needed: Phillips and flathead screwdrivers, 1/4" nut driver, needle-nose pliers. Inspect rubber pressure hose for cracks or blockages before condemning the switch — a clogged hose is a common misdiagnosis. Photograph all hose and wiring connections before removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GB1AAV036065ABJA gas furnace. Verify your existing switch part number matches HK06WC090 and inspect the pressure hose port count before ordering. If you have questions about fitment, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping on all in-stock orders.