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This OEM dual pressure switch assembly (part number HK06NB012) is the factory-specified replacement for the Carrier PG92SCS48100CAAA 92% AFUE gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (vacuum) created by the inducer draft motor to confirm safe flue venting conditions before allowing ignition to proceed. A failed pressure switch causes a hard lockout before ignition — the inducer will run, but the furnace will never reach the ignition stage, resulting in a no-heat call. Secondary part number HK02LB008 (Gas Pressure Switch) is also covered by this assembly listing for LP/propane-configured units.
Compatibility: Engineered to fit the Carrier PG92SCS48100CAAA 92% efficient packaged gas furnace series. Verify the W.C. rating on your existing switch before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.