OEM Carrier Draft Pressure Switch 0.18" WC for Model PY3GNAA30060NA (HK06WC061)

This OEM Carrier draft pressure switch is the factory-specified replacement for the Carrier PY3GNAA30060NA packaged unit. The pressure switch monitors negative pressure generated by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When it fails or sticks open, the control board receives no confirmation signal and puts the system into lockout — resulting in a no-heat condition with the inducer running but the burners never firing. This part carries OEM part number HK06WC061, superseded by current production number HK06MB061.

• Specs: 0.18" Water Column (WC) | SPST normally open | Single-port | Factory-matched Honeywell IS20224-5236 equivalent | Fits Carrier, Bryant, and Payne equipment
• OEM vs Generic: OEM pressure switches are calibrated to exact WC setpoints at the factory. Generic alternatives often exhibit ±0.05" WC drift, causing nuisance lockouts or — worse — allowing ignition under unsafe venting conditions.
• Install difficulty: 2/5 — Shut off power and gas before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, small flathead screwdriver. Remove the single rubber hose from the port, disconnect two spade terminals, and swap in the new switch. Always inspect the hose for cracks or blockages before reassembly.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Fits Carrier model PY3GNAA30060NA packaged units. OEM part number HK06WC061 has been superseded by HK06MB061 — both are the identical 0.18" WC SPST switch and are fully interchangeable. Verify the WC rating on your existing switch before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy.