OEM Carrier Dual Pressure Switch Assembly HK06NB020 for Model PG92SBS48080BBAA

This OEM dual pressure switch assembly is the factory-specified replacement for the Carrier PG92SBS48080BBAA 92% AFUE packaged gas furnace. The pressure switch proves that the inducer motor has established proper draft before allowing the ignition sequence to proceed. When this switch fails — or the hose, port, or diaphragm degrades — your furnace will lock out before ignition, often flashing a diagnostic fault code indicating an open pressure switch. OEM part number HK06NB020 has been superseded by HK06MB020; both are included for cross-reference. Secondary gas pressure switch HK02LB008 is also referenced for complete two-stage pressure switch service on this model.

• OEM Part Numbers: HK06NB020 (superseded) | HK06MB020 (current direct replacement) | HK02LB008 (gas pressure switch, secondary stage) | Factory Authorized Carrier / Bryant / Payne part
• OEM vs Generic: OEM pressure switches are calibrated to exact water-column (W.C.) trip points for this furnace's inducer. Generic switches may trip at the wrong differential, causing nuisance lockouts or — worse — failing to detect a true venting fault, creating a safety hazard.
• Install Difficulty: 3/5 — Shut off power and gas before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers, manometer (recommended to verify W.C. rating on data plate). Inspect rubber hose and collector box port for cracks or blockage before condemning the switch.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG92SBS48080BBAA 4-ton 80,000 BTU 92% AFUE packaged gas furnace. Cross-references Carrier, Bryant, and Payne units sharing this dual pressure switch specification. Always verify the W.C. rating stamped on your existing switch before installing. Our fitment team is available to confirm compatibility before you order — no guesswork required.