OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY4GPAA30060AA

This OEM draft pressure proving switch is the factory-specified replacement for the Carrier PY4GPAA30060AA packaged unit. The pressure switch monitors negative pressure generated by the inducer motor to confirm safe venting conditions before the ignition sequence begins. When it fails or sticks open, the furnace or packaged unit will lock out before ignition — resulting in a no-heat call even though the inducer motor is running normally.

• Specs: 0.18" W.C. (water column) setpoint | Normally open | Single-port pressure sensing | Factory-matched actuation tolerance | OEM Part # HK06WC061 (superseded by HK06MB061) | Cross-references Honeywell IS20224-5236
• OEM vs Generic: This is a genuine Carrier OEM switch manufactured to exact W.C. actuation specs. Generic substitutes often deviate in setpoint calibration, causing nuisance lockouts or — more dangerously — allowing operation under unsafe venting conditions.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer for post-install verification. Disconnect the rubber hose from the port, swap the switch, reconnect, and confirm the unit cycles through a full ignition sequence.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PY4GPAA30060AA packaged unit. Also fits Bryant and Payne models sharing this pressure switch specification. Always verify the W.C. rating on your existing switch and the unit's wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — don't guess on safety-critical components.