OEM Carrier Dual Pressure Switch Assembly HK06NB021 for Model PG92SAS60120DAAA

This OEM dual pressure switch assembly is the factory-specified replacement for the Carrier PG92SAS60120DAAA 92% AFUE gas furnace. The pressure switch is a critical safety device that proves the inducer motor is operating at the correct RPM and generating sufficient negative pressure (vacuum) before allowing the ignition sequence to proceed. When either switch in the dual assembly fails, the furnace control board will lock out the heating sequence entirely — leaving you with a blinking error code and no heat. Common failure symptoms include the inducer motor running but the furnace never advancing to ignition, a fault code indicating an open pressure switch, or the furnace cycling on and off repeatedly without firing.

• Replaces OEM Part Numbers: HK06NB021 (Dual Pressure Switch Assembly) | HK02LB008 (Gas Pressure Switch) — both switches included in this dual assembly
• OEM vs Generic: This is a genuine OEM Carrier part, factory-calibrated to the exact water column (W.C.) rating required by the PG92SAS60120DAAA. Aftermarket switches often use approximate W.C. ratings that can cause nuisance lockouts or, worse, allow the furnace to fire under unsafe venting conditions.
• Install Difficulty: 2/5 — Locate the pressure switch(es) on the inducer housing or manifold, label and disconnect the hose ports and wiring terminals, and swap the assembly. Tools needed: flathead screwdriver, needle-nose pliers. Always verify hose integrity and check for condensate blockage before condemning the switch itself.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Engineered specifically for the Carrier PG92SAS60120DAAA 92% AFUE packaged gas furnace. Cross-references include part numbers HK06NB021, HK06MB021, HK02LB008, and BA20268-2. Confirm your unit's model and data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment at no charge — contact us before you buy.