OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY3GPAA36060NA

This OEM pressure switch is the factory-specified replacement for the Carrier PY3GPAA36060NA packaged unit. The pressure switch monitors the negative pressure created by the draft inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When it fails or sticks open, the furnace will lock out before ignition — leaving you with a blinking fault code and no heat. A failed pressure switch is one of the most common causes of a furnace that won't start, even when the inducer motor is running normally.

• Specs: 0.18" Water Column (WC) | SPST (Normally Open) | Draft inducer proving switch | Replaces OEM part numbers HK06WC061 and superseding part HK06MB061 | Also replaces Honeywell IS20224-5236
• OEM vs Generic: This is a genuine Carrier factory-authorized part, precision-calibrated to 0.18" WC. Aftermarket switches frequently fall outside tolerance, causing nuisance trips or, worse, allowing ignition under unsafe draft conditions.
• Install difficulty: 2/5 — Power down the unit at the disconnect before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a manometer to verify inducer draft if troubleshooting. Swap the hose connection and two wire terminals — note wire colors before disconnecting. Always clear fault codes after replacement.
• Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Fits Carrier model PY3GPAA36060NA packaged units. This part is also cross-compatible with select Bryant and Payne models sharing the same 0.18" WC pressure switch specification — verify your unit's data plate and existing switch rating before ordering. Note: HK06WC061 has been superseded by HK06MB061; both part numbers are fulfilled by the same current OEM component. Questions about fitment? Our HVAC parts specialists verify compatibility before every order.