OEM Carrier Pressure Switch with Bracket for Model GB1AAV024045ACJA — Part HK06WC090

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier GB1AAV024045ACJA gas furnace. The pressure switch monitors negative pressure created by the inducer motor to confirm proper venting before allowing ignition to proceed. When this switch fails, the furnace control board cannot verify that the inducer is operating correctly, causing the unit to lock out prior to ignition — resulting in no heat and a blinking fault code. Common symptoms include the inducer running continuously with no ignition attempt, or the furnace cycling off immediately after startup.

• Specs: OEM part number HK06WC090 | Includes factory mounting bracket | Calibrated W.C. (water column) rating matched to Carrier GB1AAV024045ACJA specifications | Single-port diaphragm-style pressure switch
• OEM vs Generic: This OEM switch is factory-calibrated to the exact water column rating required by the GB1AAV024045ACJA. Generic pressure switches often carry wider tolerances and may trip too early or too late, leading to nuisance lockouts or, worse, unsafe ignition conditions.
• Install difficulty: 2/5 — Turn off power and gas supply before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, and a manometer to verify W.C. rating if reusing hose tubing. Inspect the rubber hose for cracks or blockages before installing the new switch, as a clogged hose is a frequent root cause of switch failure.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier GB1AAV024045ACJA gas furnace. Verify the existing part number printed on the switch body matches HK06WC090 before ordering. If your data plate or existing switch label differs, contact our fitment team — we confirm compatibility before your order ships so you get the right part the first time.