OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY4GNAC30060AA

This OEM Carrier draft inducer pressure switch is the factory-specified replacement for the Carrier PY4GNAC30060AA packaged unit. The pressure switch monitors negative pressure created by the inducer blower motor to confirm safe venting conditions before allowing the ignition sequence to proceed. When this switch fails or sticks open, the control board cannot verify inducer operation and will lock out the entire heating cycle — leaving you with a system that attempts to start but shuts down before any ignition occurs.

• Specs: 0.18" Water Column (WC) setpoint | SPST normally open | OEM Part# HK06WC061 (updated successor: HK06MB061) | Replaces Honeywell IS20224-5236
• OEM vs Generic: OEM pressure switches are calibrated to exact factory WC ratings (±0.01" tolerance). Off-spec aftermarket switches can trigger nuisance lockouts or, worse, allow ignition under unsafe venting conditions.
• Install difficulty: 2/5 — Power down the unit and verify inducer has stopped before servicing. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers, manometer (for verification). Disconnect the rubber hose from the switch port, swap connectors, and reconnect hose. Always confirm furnace cycles through full ignition sequence after replacement.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY4GNAC30060AA packaged units. Note: HK06WC061 has been officially superseded by Carrier part number HK06MB061 — both are included in our listing and are fully interchangeable. Verify your unit's data plate WC rating before ordering. Our fitment team is available to confirm compatibility before you buy.