OEM Carrier Draft Inducer Pressure Switch 0.18" WC for Model PY3GEAA60115NA

This OEM Carrier pressure switch (part number HK06WC061, superseded by HK06MB061) is the factory-specified replacement for the Carrier PY3GEAA60115NA packaged unit. The pressure switch monitors negative pressure created by the draft inducer motor to confirm safe venting conditions before the ignition sequence is allowed to proceed. When it fails or sticks open, the furnace control board never receives proof of inducer operation — resulting in a hard lockout before ignition, a blinking fault code, or a furnace that attempts to start and immediately shuts down. This is one of the most common causes of a furnace that "clicks but won't light."

• Specs: 0.18" W.C. (water column) rating | SPST (Single Pole, Single Throw) | Draft inducer proving switch | Cross-references Honeywell IS20224-5236 | Replaces obsolete HK06WC061 with current OEM part HK06MB061
• OEM vs Generic: OEM pressure switches are calibrated to factory-exact set-point tolerances. Generic aftermarket switches often carry wider W.C. tolerances that can cause nuisance lockouts or, worse, allow ignition under unsafe venting conditions — a critical safety risk. Always use OEM on pressure switches.
• Install Difficulty: 2/5 — Power down and tag out the unit before starting. Tools needed: 1/4" nut driver, needle-nose pliers, and a short length of replacement silicone tubing (recommended). Photograph the hose and wiring connections before disconnecting. Inspect inducer hose for cracks or blockages while the switch is out — a clogged hose is often the root cause of switch failure.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Fits Carrier model PY3GEAA60115NA and select Bryant and Payne packaged units sharing the same inducer/pressure switch assembly. Also fits across Carrier, Bryant, and Payne furnace and packaged unit platforms using the 0.18" WC specification — verify your unit's existing switch rating on the data plate or wiring diagram before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you purchase.