OEM Carrier High-Fire Pressure Switch HK06WC091 for Model PG8JEA060135AAJA

This OEM Carrier SPST high-fire pressure switch (part number HK06WC091) is the factory-specified replacement for the Carrier PG8JEA060135AAJA gas furnace. Manufactured by Honeywell to Carrier factory specifications, this pressure switch monitors the negative pressure (vacuum) created by the draft inducer motor before allowing the ignition sequence to proceed. When the switch fails — or senses improper inducer airflow — the control board locks out the ignition sequence, resulting in a furnace that blows only cold air or shuts down immediately after startup. A failed pressure switch is one of the most common causes of a furnace no-heat call in mid-season.

• Specs: SPST (Single-Pole Single-Throw) configuration | High-fire pressure switch | Factory-authorized Honeywell-manufactured component | Designed for correct W.C. (water column) rating matched to PG8JEA060135AAJA inducer performance
• OEM vs Generic: OEM pressure switches are calibrated to the exact W.C. trip point required by your furnace's inducer. Generic alternatives can be mis-rated by ±0.10" WC or more, causing nuisance lockouts in cold weather or — worse — allowing operation with inadequate flue draft, creating a safety hazard.
• Install difficulty: 2/5 — Power down the furnace and confirm zero voltage before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer (optional, for verification). Photograph all hose and wire connections before disconnecting. The switch typically mounts with one screw and connects via a single vacuum hose and two spade terminals.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier model PG8JEA060135AAJA gas furnace. Note: HK06WC091 has been superseded by OEM replacement part HK06MC110 — our listing ships the current authorized replacement that meets or exceeds original specifications. Always verify the W.C. rating on your existing switch label before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.