OEM Carrier Pressure Switch for Model GA2AAD060110ACJA — HK06WC085 / HK06WC097

This OEM replacement pressure switch is the factory-specified part for the Carrier GA2AAD060110ACJA gas furnace. The pressure switch is a safety device that monitors negative pressure (draft) created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When the switch fails — or the port becomes blocked — the furnace will lock out before ignition, often flashing a fault code for "pressure switch stuck open" or "pressure switch stuck closed." Symptoms include no heat, a cycling inducer with no ignition, or a continuous inducer run with no burner flame.

• Specs: OEM-rated W.C. (water column) set point factory-matched to GA2AAD060110ACJA | Single-port design | 24V control circuit compatible | HK06WC097 variant includes mounting bracket for direct drop-in replacement
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances required by your furnace's control board. Off-spec generic switches can cause nuisance lockouts or, worse, allow operation under unsafe venting conditions — always choose OEM for safety-critical components.
• Install difficulty: 3/5 — Tools needed: 1/4" nut driver, flathead screwdriver, digital manometer (recommended for verification). Always disconnect power before servicing. Inspect rubber hose and port for cracks or blockage before replacing the switch — a clogged port is a common root cause of switch failure symptoms.
• Warranty: 1-year OEM factory warranty. Order ships same business day from our warehouse stock.

Compatibility: Designed specifically for the Carrier GA2AAD060110ACJA 5-ton gas furnace. This listing covers both OEM part numbers: HK06WC085 (pressure switch only) and HK06WC097 (pressure switch with mounting bracket). Verify your existing part number from the furnace's wiring diagram or component label before ordering. Not sure which variant you need? Our HVAC parts specialists confirm fitment before you buy — in stock and ships today.