OEM Carrier Draft Pressure Switch 0.18" WC for Model PY3GNAA24060NA

This OEM draft inducer pressure switch is the factory-specified replacement for the Carrier PY3GNAA24060NA packaged gas/electric unit. The pressure switch monitors the negative pressure (draft) created by the inducer motor to confirm safe venting conditions before allowing the ignition sequence to proceed. When this switch fails or sticks open, the furnace will lock out before the igniter ever fires — leaving you with a cold system and often a diagnostic fault code pointing to inducer or pressure circuit failure.

• Specs: 0.18" Water Column (W.C.) | SPST normally open | OEM Part# HK06WC061 (superseded by HK06MB061) | Factory-matched setpoint tolerance
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. specifications at the factory. Generic substitutes with loose tolerances can fail to close — or worse, close at the wrong pressure — creating unsafe venting conditions or nuisance lockouts that are difficult to diagnose.
• Install difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a small flathead screwdriver for the hose barb. Photograph the pressure tube routing before removal. Verify hose integrity — a cracked tube is often the root cause of switch failure.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNAA24060NA packaged unit. OEM part number HK06WC061 has been superseded by HK06MB061 — both are fully interchangeable. Also cross-references Honeywell IS20224-5236. Verify the 0.18" W.C. rating on your unit's existing switch before ordering. Have questions about fitment? Our HVAC parts team confirms compatibility before you buy — order now and ships today!