OEM Carrier Draft Pressure Switch 0.18" WC for Model PY3GNA030060AA

This is the OEM factory-specified draft inducer pressure switch for the Carrier PY3GNA030060AA packaged heating unit. The pressure switch proves that the inducer motor has established a proper negative pressure draft before the control board advances to ignition. When it fails or sticks open, the furnace will lock out entirely — often before a single ignition attempt — leaving you with a no-heat call and a flashing diagnostic code indicating a pressure switch fault.

• Specs: 0.18" W.C. (water column) setpoint | Normally-open configuration | Honeywell-manufactured (OEM cross: IS20224-5236) | Replaces legacy P/N HK06WC061, superseded by HK06MB061
• OEM vs Generic: This factory-matched OEM switch is calibrated to the exact 0.18" W.C. trip point required by the Carrier control board. Off-spec aftermarket switches can trip too early or too late, causing nuisance lockouts or — worse — unsafe operation.
• Install difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, manometer (for verification). Disconnect the rubber hose from the inducer port and the two wire spade connectors before removing the old switch. Always confirm hose integrity and inducer performance when diagnosing pressure switch failures.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY3GNA030060AA packaged unit. Also cross-compatible with select Bryant and Payne furnace and packaged unit models using the 0.18" W.C. specification — verify your unit's data plate and existing switch rating before ordering. Our HVAC parts team is available to confirm fitment prior to purchase. Order now — in stock and ships today.