OEM Carrier Dual Pressure Switch Assembly HK06NB021 for Model PG96VAT60100CDAA

This is the OEM factory-specified dual pressure switch assembly (part number HK06NB021, superseded by HK06MB021) for the Carrier PG96VAT60100CDAA 96% AFUE gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (vacuum) 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 — leaving you with no heat and a flashing fault code on the control board.

• Specs: Dual pressure switch assembly | Two independent switches included | Each switch features 2 wire terminals and 1 hose port | Factory-calibrated W.C. (water column) trip points matched to the PG96VAT60100CDAA inducer and heat exchanger
• OEM vs Generic: OEM pressure switches are calibrated to exact factory W.C. specifications. Aftermarket units often carry wider tolerances, which can cause nuisance lockouts or — more dangerously — allow ignition under marginal draft conditions. For a safety-critical component like this, OEM is strongly recommended.
• Install Difficulty: 2/5 — Power down and lockout the furnace before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers. Photograph all hose and wire connections before removal. Inspect inducer hoses for cracks while you have the panel open — a leaking hose is a common root cause of pressure switch failure.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed as a direct OEM replacement for the Carrier PG96VAT60100CDAA high-efficiency gas furnace. Also compatible with select Bryant and Payne models sharing the same inducer assembly. Always verify your existing switch's W.C. rating against the data label on your unit before installing. Have a question about fitment? Our HVAC parts specialists verify compatibility before your order ships — call or chat today.