OEM Carrier Pressure Switch with Bracket (HK06NB124) for Model PG9MAB060080LBSA

This OEM pressure switch with bracket is the factory-authorized replacement part for the Carrier PG9MAB060080LBSA gas furnace. The inducer pressure switch monitors negative pressure produced by the draft inducer motor to confirm proper venting before allowing ignition to proceed. When the diaphragm fails or the switch sticks, the furnace will fault before ever reaching ignition — leaving you with no heat and a blinking error code. Common symptoms include the inducer running continuously with no ignition, or an immediate lockout at startup.

• Specs: 1.81" WC rating | -1.65" WC set point | SPST (Single-Pole, Single-Throw) | Normally Open | Includes factory mounting bracket | Manufactured by Honeywell for Carrier
• OEM vs Generic: This is the OEM Carrier-authorized part (HK06NB124), precision-calibrated to factory tolerances. Generic switches often drift from rated set points, causing nuisance lockouts or — worse — allowing ignition under unsafe vent conditions. OEM is the only safe choice for pressure switches.
• Install difficulty: 2/5 — Power down the furnace and confirm inducer is off before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers. Note port orientation: the + and - ports are labeled, and one port contains an internal flow restrictor — match to the original before reconnecting hoses. Photograph wiring and hose routing before removal.
• Warranty & Shipping: 1-year OEM manufacturer warranty against defects. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG9MAB060080LBSA gas furnace. Also supersedes obsolete part numbers HK06NB119, HK06NB120, and HK06NB122. Verify your existing switch's water column rating and port configuration before installation. Need help confirming fitment? Our HVAC parts team verifies compatibility before you order — just ask.