OEM Carrier SPST High-Fire Pressure Switch HK06WC091 for Model PG8MVA060110AAJA

This OEM pressure switch (also sold as HK06WC092 with pressure tube included) is the factory-specified draft-proving switch for the Carrier PG8MVA060110AAJA gas furnace. Manufactured by Honeywell to Carrier's exact specifications, it monitors the negative pressure (vacuum) created by the inducer motor to confirm safe flue operation before allowing the ignition sequence to proceed. When the switch fails — or the inducer is not drawing adequate vacuum — the furnace control board will lock out before the igniter ever fires, leaving you with a cold house and a flashing fault code.

• Specs: SPST (Single-Pole, Single-Throw) | High-fire pressure rating | 24V control circuit compatible | Factory Authorized Honeywell-manufactured component | Superseded by Carrier part HK06MC110
• OEM vs Generic: This is a genuine OEM Factory Authorized Part matched to the exact set-point and diaphragm calibration of the PG8MVA060110AAJA. Generic switches often ship with off-spec trip points that cause nuisance lockouts or, worse, allow flue gas backdrafting — a serious safety risk.
• Install difficulty: 2/5 — Power down the furnace at the disconnect before starting. Tools needed: 1/4" nut driver, flat-blade screwdriver, needle-nose pliers. Photograph all wiring and hose routing before disconnecting. The HK06WC092 variant ships with the pressure tube pre-attached — recommended if your existing tube is cracked or brittle.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Directly fits Carrier model PG8MVA060110AAJA gas furnace. Also cross-compatible with select Bryant and Payne models sharing the same inducer assembly. Confirm the W.C. set-point on your existing switch before ordering if unsure. Choose HK06WC091 (switch only) or HK06WC092 (switch with pressure tube) at checkout. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — call or chat now.