OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY3GPAA30060AA

This is the OEM factory-specified draft inducer pressure switch for the Carrier PY3GPAA30060AA packaged unit. The pressure switch monitors negative pressure created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or sticks, the furnace or heating section will lock out before ignition — a common symptom being a unit that attempts to start, runs the inducer, but never advances to the burner stage. Also cross-references Honeywell part number IS20224-5236 and current successor part HK06MB061.

• Specs: 0.18" W.C. (inches water column) setpoint | Normally open | Single-port draft proving switch | Factory OEM tolerance — matches original equipment exactly
• OEM vs Generic: OEM pressure switches are factory-calibrated to exact W.C. ratings. Off-tolerance aftermarket switches can trip too early or too late, causing nuisance lockouts or — worse — allowing ignition under unsafe draft conditions.
• Install Difficulty: 2/5 — Disconnect power before beginning. Tools needed: 1/4" nut driver, flat-blade screwdriver, needle-nose pliers. Photograph all hose and wiring connections before removal. Replace rubber tubing if cracked or brittle during the same service call.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse stock.

Compatibility: Designed for the Carrier PY3GPAA30060AA packaged unit. Note: OEM part number HK06WC061 has been superseded by HK06MB061 — both numbers reference the same 0.18" WC switch. Compatible across Carrier, Bryant, and Payne platforms sharing this draft switch specification. Verify the W.C. rating on your existing switch before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — in stock and ships today.