OEM Carrier Pressure Switch with Bracket for Model GB3AAV060135ABJA — Part HK06WC090

This OEM pressure switch with bracket is the factory-specified replacement for the Carrier GB3AAV060135ABJA gas furnace. The pressure switch is a safety device that monitors negative pressure created by the inducer motor to confirm proper venting before allowing ignition to proceed. When this switch fails or the diaphragm cracks, the furnace will lock out before ever reaching the ignition stage — leaving you with no heat and a flashing fault code indicating a pressure switch fault. Common symptoms include the inducer motor running continuously with no ignition attempt, or the furnace cycling off immediately after startup.

• Specs: OEM-rated water column (W.C.) pressure setting factory-matched to GB3AAV060135ABJA | Includes mounting bracket | Single-port design | 24V control circuit compatible | Direct drop-in replacement for part number HK06WC090
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. specifications for your furnace's inducer and venting configuration. Generic alternatives often use broader tolerances that can result in nuisance lockouts or — more dangerously — failure to detect a true venting problem.
• Install difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter to verify switch continuity. Disconnect the rubber hose and wiring harness, swap the bracket-mounted switch, and reconnect. Always inspect the hose for cracks or blockages before reinstalling.
• Warranty: 1-year OEM factory warranty. Orders ship same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier GB3AAV060135ABJA gas furnace. Verify your existing part number (HK06WC090) on the switch body or your furnace's wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping available on all in-stock orders.