OEM Carrier Pressure Switch w/ Bracket -0.33" W.C. for Model PG8DAA060115ABJA

The Carrier HK06WC090 is the factory OEM pressure switch with mounting bracket for the PG8DAA060115ABJA packaged gas furnace. The pressure switch is a critical safety device that monitors negative pressure produced by the inducer (draft) motor before allowing ignition to proceed. When the inducer creates the correct draft, the diaphragm inside the switch closes the circuit and signals the control board to advance to the ignition sequence. If the switch fails — or if it senses insufficient draft — the furnace will lock out on a pressure switch fault, typically displaying a fault code and delivering no heat.

• Specs: -0.33" W.C. (inches water column) set point | SPST normally-open configuration | Includes factory mounting bracket | OEM part number HK06WC090 | Direct factory replacement
• OEM vs Generic: This is a genuine Carrier OEM switch, factory-calibrated to the exact -0.33" W.C. trip point required by the PG8DAA060115ABJA. Off-brand switches with loose tolerances can cause nuisance lockouts or — worse — fail to detect a true venting fault, creating a safety risk.
• Install difficulty: 2/5 — Power off the furnace at the disconnect before starting. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of replacement tubing (if hose shows cracking). Always inspect the rubber hose port and hose itself for blockage, cracks, or moisture before condemning the switch — these are the most common root causes of switch failure.
• Warranty: Backed by a 1-year OEM manufacturer warranty. In-stock units ship same business day from our NationalHVACParts.com warehouse when ordered before the cut-off.

Compatibility: Engineered as the direct OEM replacement for Carrier model PG8DAA060115ABJA. Also supersedes earlier Carrier part numbers including HK06WC088, HK06WC086, HK06WC076, HK06WC072, HK06WC073, HK06WC074, HK660001, 326750-751, 310315-751, and 310315-752. Verify the W.C. rating on your existing switch before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.