OEM Carrier Pressure Switch HK06WC061 for Model PY4GEAA36090AA

This OEM pressure switch (part number HK06WC061) is the factory-specified replacement for the Carrier PY4GEAA36090AA packaged unit. The pressure switch is a critical safety component in the combustion air circuit — it monitors negative pressure created by the inducer motor to confirm proper venting before allowing the ignition sequence to proceed. When this switch fails or weakens out of calibration, the control board cannot verify safe draft conditions and will lock out the heating cycle entirely, resulting in a no-heat call with a pressure switch fault code.

• Specs: Factory-calibrated W.C. (water column) rating | SPST normally-open configuration | Direct OEM replacement — no modification required | Designed for Carrier PY4GEAA36090AA packaged gas/electric unit
• OEM vs Generic: This is a genuine OEM Carrier part. OEM pressure switches are factory-calibrated to exact W.C. trip points. Aftermarket substitutes often carry wider tolerances, risking nuisance lockouts or — more critically — failure to detect a true venting fault.
• Install Difficulty: 2/5 — Disconnect power before servicing. Tools needed: 1/4" nut driver, flathead screwdriver, manometer (recommended to verify switch trip point post-install). Label hose connections before removal to ensure correct reassembly.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct fit for Carrier model PY4GEAA36090AA. Always confirm your unit's existing pressure switch W.C. rating and hose port count against your data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order for peace of mind.