OEM Carrier Pressure Switch with Bracket -0.33" WC for Model PG8DAA048095ABJA (Part# HK06WC090)

This OEM Carrier pressure switch with bracket (HK06WC090) is the factory-specified replacement for the Carrier PG8DAA048095ABJA packaged gas furnace. The pressure switch is a critical safety component that monitors the negative pressure (draft) created by the inducer motor. Once the inducer reaches proper speed and venting is confirmed, the pressure switch closes to allow the ignition sequence to proceed. When it fails or sticks open, the control board interprets this as a venting fault and shuts down the furnace — typically resulting in a no-heat call with a flashing fault code before the burners ever fire.

• Specs: -0.33" W.C. (inches of water column) set point | Includes factory mounting bracket | SPST normally-open configuration | Direct OEM replacement — no field calibration required
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory W.C. tolerances. Off-brand pressure switches frequently carry ±10–15% W.C. variance, which can cause nuisance lockouts or — worse — fail to detect real venting failures, creating a safety hazard.
• Install difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, and a short length of replacement hose (inspect existing hose for cracks while you're in there). Photograph the hose routing and wiring spade connectors before removal. Replaces legacy part numbers HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before 3 PM ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PG8DAA048095ABJA packaged gas furnace. Always verify the W.C. rating stamped on your existing pressure switch and cross-reference the part number on your unit's data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you buy if you have any questions.