OEM Carrier Dual Pressure Switch Assembly HK06NB012 for Model PG96VAT30040ACAA

This OEM Dual Pressure Switch Assembly is the factory-specified replacement for the Carrier PG96VAT30040ACAA 96% AFUE gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (vacuum) produced by the inducer motor during each heating cycle. When the inducer is confirmed to be running at the correct speed and pulling the proper draft, the pressure switch closes its contacts and allows the control board to advance to ignition. If the switch fails — or if a cracked hose, blocked flue, or weak inducer produces insufficient vacuum — the switch remains open, causing the furnace to lock out before ignition, leaving you with no heat.

• Assembly: Dual Pressure Switch (two switches included) | Each switch features 2 wire terminals and 1 hose port | SPST configuration | Factory-rated at 0.68" W.C.
• OEM vs Generic: This is a genuine Carrier OEM assembly matched to the exact W.C. rating of the PG96VAT30040ACAA. Aftermarket switches with imprecise trip points can cause nuisance lockouts or, worse, allow unsafe draft conditions to go undetected — always use OEM on safety switches.
• Install difficulty: 2/5 — Label all hose ports and wire terminals with tape before disconnecting. Tools needed: 1/4" nut driver, needle-nose pliers, and a digital manometer (recommended to verify draft after install). Always check the rubber hoses for cracks while the furnace is open — cracked hoses are a leading cause of pressure switch failure.
• Warranty & Shipping: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PG96VAT30040ACAA packaged gas furnace. OEM part number HK06NB012 has been superseded by HK06MB012 — both part numbers are fulfilled with the current production assembly. Verify your unit's data plate and existing switch W.C. rating before ordering. Our team confirms fitment before you order — just reach out.