OEM Carrier Dual Pressure Switch Assembly HK06NB020 for Model PG92SBS48080BAAA

This OEM dual pressure switch assembly (part number HK06NB020) is the factory-specified replacement for the Carrier PG92SBS48080BAAA 92% AFUE gas furnace. The pressure switch monitors negative pressure created by the inducer draft motor to verify safe flue operation before allowing the ignition sequence to proceed. When either switch fails — or when the inducer, flue, or condensate system is compromised — the switch opens the control circuit, preventing ignition and triggering a system lockout. Common failure symptoms include: furnace attempts to start but shuts off before ignition, a blinking fault code indicating a pressure switch error, or a furnace that runs the inducer continuously but never advances to heat.

• Specs: Dual pressure switch assembly | Factory-calibrated W.C. (water column) rating | 24V control circuit | Replaces OEM part HK06NB020 (current replacement: HK06MB020) | Also pairs with secondary gas pressure switch HK02LB008 on LP/propane-configured units
• OEM vs Generic: OEM pressure switches are factory-calibrated to the exact W.C. setpoint required by this furnace model. Generic substitutes often use wider tolerance ranges, risking nuisance lockouts or — more critically — allowing ignition under unsafe draft conditions.
• Install difficulty: 3/5 — Turn off power and gas before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, manometer (recommended to verify draft pressure after installation). Inspect rubber hose connections for cracks before reinstalling. Always clear fault codes from the control board after replacing.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Fits Carrier model PG92SBS48080BAAA 92% AFUE packaged gas furnace. If your unit is configured for LP/propane, also verify the companion gas pressure switch HK02LB008. Confirm your existing switch's W.C. rating on the data plate or switch label before ordering. Our fitment team is available to verify compatibility — reach out before you order if you have any doubts. Order by 3 PM local time and your part ships today.