OEM Carrier Pressure Switch with Bracket (HK06NB124) for Model PG9MAB036060LBSA

This is the factory OEM replacement pressure switch with integrated mounting bracket for the Carrier PG9MAB036060LBSA gas furnace. The pressure switch monitors negative pressure created by the draft inducer motor to confirm safe combustion airflow before the control board allows the ignition sequence to proceed. When this switch fails or sticks open, the furnace will lock out on a pressure fault — typically before any ignition attempt — leaving you with a no-heat call and a flashing fault code. Replacing it with the correct OEM part restores factory-calibrated safety logic.

• Specs: SPST (Single-Pole, Single-Throw) | 1.81" W.C. set point | Includes factory mounting bracket | Replaces superseded part numbers HK06NB120, HK06NB119, HK06NB122, and HK06ZB104
• OEM vs Generic: OEM pressure switches are factory-calibrated to the exact W.C. rating required by your furnace's control board. Off-spec generic switches can trip too early or too late, causing nuisance lockouts or — worse — masking a real venting problem. Don't compromise on a safety component.
• Install difficulty: 2/5 — Power down the furnace at the disconnect and thermostat before starting. Tools needed: 1/4" nut driver, flat-head screwdriver, needle-nose pliers. Photograph all hose connections before removal. Match the port labeled with a restrictor orifice on the old switch to the same port on the new switch before reattaching hoses.
• Warranty: 1-year OEM factory warranty. Ships same business day from NationalHVACParts.com when ordered before cutoff.

Compatibility: Designed for the Carrier PG9MAB036060LBSA gas furnace. HK06NB124 is also the current superseding replacement used across more than 200 Carrier and Bryant residential furnace models — always verify the W.C. rating on your unit's data plate before installing. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — contact us today and get your part shipped out fast.