OEM Carrier Pressure Switch with Bracket 1.81" WC for Model PG9MAB060140ABSA

This OEM pressure switch (part #HK06NB124) is the factory-specified replacement for the Carrier PG9MAB060140ABSA gas furnace. The pressure switch monitors negative pressure created by the inducer motor to confirm proper draft before allowing ignition. When it fails or sticks open, the furnace will lock out before the ignition sequence begins — typically triggering a fault code indicating a pressure switch issue. This switch includes the OEM mounting bracket for a direct drop-in installation with no modifications required.

• Specs: 1.81" W.C. (water column) setpoint | SPST (Single-Pole, Single-Throw) | 1/4" barb hose connection | Includes factory mounting bracket | Replaces obsolete part numbers HK06NB120, HK06NB119, and HK06NB122
• OEM vs Generic: OEM pressure switches are calibrated to exact factory W.C. tolerances. Off-brand substitutes often carry ±5–10% W.C. variance, which can cause nuisance lockouts or — more dangerously — allow ignition under unsafe draft conditions.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Disconnect the rubber hose and two-wire harness from the old switch, unmount the bracket, and reverse for installation. Tools needed: 1/4" nut driver, needle-nose pliers. Photograph wiring and hose routing before removal. Check hose for cracks or blockage while the switch is out.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG9MAB060140ABSA gas furnace. This part is also a verified replacement across more than 200 Carrier and Bryant residential furnace models. Always confirm the W.C. rating on your existing switch's data label before ordering. Our fitment team is available to verify compatibility before you buy — no guesswork required.