OEM Carrier Pressure Switch with Bracket for Model GB3AAV036095ACJA (HK06WC090)

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier GB3AAV036095ACJA gas furnace. The pressure switch is a safety device that monitors the negative pressure (inches water column) created by the inducer blower to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks open, the furnace control board cannot verify that the inducer is operating correctly — resulting in a no-heat lockout, a blinking fault code, or a furnace that clicks and restarts repeatedly without ever reaching the ignition stage. The integrated mounting bracket ensures a secure, factory-correct installation with no additional hardware required.

• Specs: Rated to factory W.C. (inches water column) specification | Includes OEM mounting bracket | Single-port design | Direct plug-in connector | Part number HK06WC090
• OEM vs Generic: This OEM switch is calibrated to the exact W.C. trip point specified for the GB3AAV036095ACJA. Aftermarket substitutes often use wider tolerance ratings, which can cause nuisance lockouts or — more dangerously — fail to detect true venting blockages, creating a safety risk.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: flathead screwdriver, needle-nose pliers, and a phone camera to photograph hose and wire routing before disconnecting. Inspect the rubber pressure hose for cracks or blockages while the switch is out.
• Warranty: 1-year OEM factory warranty against defects. Orders ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier GB3AAV036095ACJA gas furnace. Always confirm the OEM part number HK06WC090 against your existing switch or the unit's wiring diagram label before ordering. If you have any fitment questions, our HVAC parts specialists are available to verify compatibility before you buy — same-day shipping on all in-stock orders.