OEM Carrier Pressure Switch w/ Bracket -1.65" WC for Model PG9MAB036060AASA

This is the factory-specified OEM pressure switch with mounting bracket for the Carrier PG9MAB036060AASA gas furnace. The pressure switch monitors negative pressure created by the induced draft blower to verify proper venting before allowing ignition to proceed. When this switch fails or becomes stuck, the furnace control board detects an unsafe condition and locks out the ignition sequence — leaving you with no heat and typically a fault code 31 or similar inducer-related error on the control board.

• Specs: -1.65" W.C. set point | SPST (Single-Pole, Single-Throw) | Includes OEM mounting bracket | Supersedes HK06NB119, HK06NB120, HK06NB122
• OEM vs Generic: This is the genuine Carrier OEM part — factory-calibrated to the exact W.C. set point required by the PG9MAB036060AASA heat exchanger and inducer assembly. Off-brand pressure switches with loose tolerances can cause nuisance lockouts or, worse, unsafe operation if the switch trips too late.
• Install difficulty: 2/5 — The mounting bracket makes alignment straightforward. Tools needed: flathead screwdriver, 1/4" nut driver, needle-nose pliers. Photograph all hose connections before removal. Always verify inducer motor function and hose integrity before condemning the switch — a cracked hose is a common root cause of switch failure.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG9MAB036060AASA gas furnace. Also fits over 200 Carrier and Bryant residential furnace models that share the HK06NB124 specification — verify the W.C. rating on your original switch before ordering. Our fitment team is available to confirm compatibility before you buy.