OEM Carrier Pressure Switch with Bracket (HK06WC090) for Model PG8UAA048091ABJA

This is the factory OEM pressure switch with mounting bracket for the Carrier PG8UAA048091ABJA gas furnace. The pressure switch is a safety device that monitors negative pressure created by the inducer draft motor — it must close (prove airflow) before the control board will advance the ignition sequence. When this switch fails, the furnace locks out before ignition, often flashing a fault code indicating a pressure switch or inducer error. A failed or stuck switch is one of the most common causes of a no-heat call on Carrier 80% furnaces.

• Specs: .33" W.C. (water column) rating | Single-port design | Includes factory mounting bracket | OEM part number HK06WC090 | Also supersedes HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001, 310315-751, 310315-752, 326750-751
• OEM vs Generic: This is a genuine Carrier OEM part — factory-calibrated to the exact .33" W.C. trip point required for your PG8UAA048091ABJA. Aftermarket switches frequently carry ±10–15% pressure tolerances that can cause nuisance lockouts or, worse, allow unsafe operation without proving draft.
• Install difficulty: 2/5 — Always shut off gas and power before servicing. Tools needed: ¼" nut driver, needle-nose pliers, and a manometer or U-tube to verify inducer pressure if diagnostics are inconclusive. Before replacing, inspect and clear the rubber hose port for condensate blockage — a clogged port mimics a failed switch.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PG8UAA048091ABJA packaged gas furnace. Verify your unit's data plate and existing switch W.C. rating before ordering. Our fitment team is available to confirm compatibility — reach out before you buy if unsure.