OEM Carrier Draft Pressure Switch 0.18" WC for Model PY4GEAA60130AA

This is the factory OEM replacement draft pressure switch for the Carrier PY4GEAA60130AA packaged unit. The pressure switch monitors negative pressure created by the inducer blower motor to confirm that the flue path is open and safe before allowing ignition to proceed. When this switch fails — or when it senses insufficient draft — the control board will lock out on a pressure switch fault, leaving you with no heat. Common symptoms include the inducer running but the furnace never advancing to ignition, a blinking fault code indicating a pressure switch error, or the system cycling the inducer repeatedly without progressing to the trial-for-ignition stage.

• Specs: 0.18" Water Column (W.C.) setpoint | SPST (Single-Pole, Single-Throw) | Normally Open | OEM Part # HK06WC061 (superseded by HK06MB061) | Replaces Honeywell IS20224-5236
• OEM vs Generic: OEM pressure switches are calibrated to exact W.C. tolerances at the factory. An off-spec generic switch rated even ±0.05" W.C. can cause nuisance lockouts on cold starts or, worse, allow ignition under unsafe draft conditions.
• Install difficulty: 2/5 — Power down the unit before beginning. Tools needed: 1/4" nut driver, flathead screwdriver, and a digital manometer (recommended to verify draft). Disconnect the rubber hose and two-wire spade connector, swap the switch, and confirm tubing is free of cracks or blockages before restart.
• Warranty: 1-year OEM manufacturer warranty. In stock — ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY4GEAA60130AA packaged unit. OEM part number HK06WC061 has been superseded by HK06MB061 — both are covered by this listing. Also fits select Bryant and Payne models sharing the same 0.18" W.C. draft pressure switch specification. Verify your existing switch's W.C. rating on the data label before ordering. Our fitment team is available to confirm compatibility — contact us before you order.