OEM Carrier Draft Pressure Switch 0.18" WC (HK06WC061) for Model PY3GNAA24060AA

This is the OEM factory-specified draft inducer pressure switch for the Carrier PY3GNAA24060AA packaged unit. The pressure switch monitors negative pressure created by the inducer blower to confirm safe venting conditions before allowing the gas valve to open. When it fails or sticks open, the control board cannot prove inducer operation — resulting in a hard lockout with no ignition attempt, a blinking fault code, or a system that cycles the inducer repeatedly without ever reaching the heating stage.

• Specs: 0.18" Water Column (WC) set point | SPST (Single-Pole, Single-Throw) | Replaces OEM part HK06WC061 | Current shipping equivalent: HK06MB061 | Also replaces Honeywell IS20224-5236
• OEM vs Generic: OEM pressure switches are factory-calibrated to the exact 0.18" WC trip point required by your Carrier PY3GNAA24060AA. Off-brand substitutes frequently ship with ±15% tolerance drift, causing nuisance lockouts or — more dangerously — failing to detect a blocked flue.
• Install difficulty: 2/5 — Power down and tag out the unit before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers, and a manometer or magnehelic gauge to verify switch operation after replacement. Photograph the hose routing before disconnecting the pressure tubing.
• Warranty & Shipping: 1-year OEM warranty against defects. In stock and ships same business day from our warehouse when ordered by 3:00 PM local time.

Compatibility: Direct OEM replacement for Carrier model PY3GNAA24060AA. This switch is also cross-referenced to Bryant and Payne packaged units sharing the same inducer assembly. Always verify the WC rating stamped on your original switch before ordering — neighboring models in the PY3G series may use a different pressure rating. Have your model and serial number ready and our HVAC parts specialists will confirm fitment before your order ships.