OEM Carrier Pressure Switch with Bracket (HK06NB124) for Model PG9MAB048080LBSA

This is the factory OEM replacement pressure switch with mounting bracket for the Carrier PG9MAB048080LBSA gas furnace. The pressure switch proves that the inducer motor has established proper draft before allowing the ignition sequence to proceed. When the diaphragm fails or the switch sticks open, the control board detects a pressure fault and locks out the furnace — typically displaying an error code before any heat is produced. Replacing this switch with the correct OEM part restores safe, reliable furnace operation.

• Specs: SPST (Single-Pole, Single-Throw) | Set point: -1.65" W.C. | Rated 1.81" WC | 1/4" barbed hose connection | Includes factory mounting bracket
• OEM vs Generic: This OEM Carrier part is factory-calibrated to the exact W.C. rating required by the PG9MAB048080LBSA. Generic aftermarket switches are often rated to looser tolerances, risking nuisance lockouts or — worse — failure to detect a true draft fault.
• Install difficulty: 2/5 — Power down and disconnect the furnace before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and needle-nose pliers. Photograph all hose and wire connections before removal. Swap the hose ports carefully — note that one port may contain a flow restrictor from the original switch.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Supersedes: HK06NB124 is the current OEM part and directly replaces obsolete part numbers HK06NB120, HK06NB119, HK06NB122, HK06NB123, and HK06ZB104. If your furnace previously carried any of these part numbers, HK06NB124 with bracket is your correct replacement. Compatible across the Carrier PG9MAB048080LBSA and over 200 Carrier and Bryant residential furnace models. Order today and get same-day shipping on all in-stock orders — our HVAC specialists are available to confirm fitment before you buy.