OEM Carrier Pressure Switch 0.33 W.C. with Bracket — HK06WC090 for Model PG8DAA048115AAJA

This is the factory OEM pressure switch with integrated mounting bracket for the Carrier PG8DAA048115AAJA packaged gas furnace. The pressure switch is a normally-open safety device that monitors negative pressure created by the draft inducer motor. Once the inducer reaches proper speed and venting is confirmed, the switch closes — allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board detects a fault and locks out before the igniter ever fires, leaving you with a system that runs the inducer but produces no heat.

• Specs: 0.33 W.C. (inches of water column) set point | Includes factory mounting bracket | Normally-open SPST design | Compatible with 24V control circuit
• OEM vs Generic: This OEM switch is factory-calibrated to the exact 0.33 W.C. trip point specified for the PG8DAA series. Off-spec generic switches can trip too early or too late, causing nuisance lockouts or — worse — allowing operation under unsafe venting conditions.
• Install difficulty: 2/5 — Power down and disconnect the furnace before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a small flathead screwdriver. Photograph existing hose and wire connections before removal. The included bracket simplifies re-mounting to the original location.
• Warranty: 1-year OEM manufacturer's warranty. In-stock orders ship the same business day when placed by 5 PM EST.

Compatibility & Cross-Reference: Designed for the Carrier PG8DAA048115AAJA packaged gas furnace. Also replaces legacy Carrier and Bryant part numbers: HK06WC088, HK06WC086, HK06WC076, HK06WC074, HK06WC073, HK06WC072, HK660001, 326750-751, 310315-751, and 310315-752. Always verify the W.C. rating on your existing switch before ordering. Our parts specialists are available to confirm fitment — reach out before you buy for total peace of mind.