OEM Carrier Pressure Switch -0.33" WC with Bracket (HK06WC090) for Model PG8DAA036070ABJA

This is the genuine OEM factory-replacement pressure switch for the Carrier PG8DAA036070ABJA gas furnace. The pressure switch is a critical safety device that monitors the negative pressure (draft) created by the inducer motor. Once the inducer reaches proper speed, the switch closes and signals the control board to proceed to ignition. When this switch fails, the furnace locks out before the igniter ever fires — leaving you with no heat and typically a fault code indicating a pressure switch fault or open pressure switch condition.

• Specs: -0.33" W.C. (water column) set point | SPST (Single-Pole Single-Throw) configuration | Includes factory mounting bracket | OEM Part Number: HK06WC090
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances at the factory. Generic aftermarket switches frequently drift from their rated set point, causing nuisance lockouts or — more dangerously — failing to detect a blocked flue. Always choose OEM for a safety-critical component.
• Install difficulty: 2/5 — Power down the furnace and lock out the disconnect before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of 5/16" ID hose if the existing hose is cracked. Photograph the hose routing and wiring terminals before disconnecting. Bracket hardware is included.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day when placed by 5 PM local time.

Compatibility: Direct OEM replacement for Carrier PG8DAA036070ABJA gas furnaces. Also replaces legacy part numbers HK06WC088, HK06WC086, HK06WC076, HK06WC074, HK06WC073, HK06WC072, HK660001, 310315-751, 310315-752, and 326750-751. Verify the W.C. rating on your existing switch label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.