OEM Carrier Dual Pressure Switch Assembly HK06NB021 for Model PG95XAT48100CAAA

This OEM Dual Pressure Switch Assembly (part number HK06NB021) is the factory-specified replacement for the Carrier PG95XAT48100CAAA gas furnace. The pressure switch is a critical safety component that proves the inducer blower motor is operating at the correct RPM and generating the proper negative pressure (vacuum) before allowing gas ignition to occur. When it fails or sticks open, the furnace control board will not advance through the ignition sequence — resulting in a no-heat lockout condition, often with a diagnostic fault code pointing to a pressure switch fault. This listing also includes the secondary HK02LB008 Gas Pressure Switch, a companion switch in the dual-switch assembly for LP/propane or natural gas pressure sensing on this platform.

• Part Numbers: Primary — HK06NB021 (superseded by HK06MB021) | Secondary — HK02LB008 Gas Pressure Switch | Both switches include 2 wire terminals and one hose port each
• OEM vs Generic: OEM switches are factory-calibrated to the exact water column (W.C.) setpoint required by the PG95XAT48100CAAA inducer assembly. Off-spec aftermarket switches can trip too early or fail to open, creating nuisance lockouts or unsafe operation.
• Install Difficulty: 2/5 — Shut off power and gas before servicing. Disconnect hose tubing and wiring harness connectors. Inspect rubber hose for cracks before reinstalling. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify switch continuity). Always verify inducer operation independently before condemning the switch.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PG95XAT48100CAAA 95% AFUE packaged gas furnace. Also fits select Bryant and Payne platforms sharing this switch assembly. Verify your unit's model data plate before ordering — our team is available to confirm fitment. Order now and ship today!