York S1-024-36052-018 Pressure Switch

The York S1-024-36052-018 Pressure Switch is the definitive OEM replacement pressure switch engineered for precision airflow monitoring in high-efficiency York, Coleman, and Luxaire furnaces. This furnace pressure switch is factory-calibrated with a .20" WC pressure rating and features a Single Pole Normally Open (SPNO pressure switch) configuration that is designed to close on fall. It ensures the inducer motor establishes a consistent vacuum, preventing the combustion cycle from initiating if venting or induction fails. By utilizing this genuine York HVAC part, technicians can resolve common venting safety switch errors and ensure the system meets original manufacturer safety protocols.

This 0.20 inch WC switch is the direct performance successor to legacy part numbers 024-27631-000, 024-27631-001, and 024-25993-000. It features robust male spade terminals and a corrosion-resistant diaphragm to handle the moisture often present in condensing furnace environments. As a critical HVAC safety control, it effectively monitors the draft inducer state, protecting the heat exchanger from improper exhaust discharge. When troubleshooting a furnace not igniting or intermittent pressure switch lockout codes, this OEM component provides the specific electrical response required by the control board to resume safe operation.

• Precise .20" WC Calibration: Ensures accurate vacuum detection required for furnace ignition sequence reliability.
• SPNO Close On Fall Logic: Direct electrical match for specific York and Coleman inducer motor pressure monitoring.
• OEM Cross-Compatibility: Replaces 024-27631-000 and 024-27631-001 without the need for field modifications.
• Enhanced Durability: Built to withstand the fluctuating pressure and thermal conditions of residential air handlers.

Common Questions

Why is my York furnace displaying a pressure switch error?
A 3-flash or 4-flash code typically indicates the switch is failed to close or is stuck. This can be caused by a faulty diaphragm in the S1-024-36052-018, a cracked vacuum hose, or a blockage in the furnace venting system.

Can I use a switch with a different water column rating?
No. Using a switch with a different WC rating can lead to dangerous operation or constant nuisance tripping. This 0.20" WC switch must be used on systems specifically listed for this set point to ensure proper safety margins.

How do I test if this SPNO switch is functioning?
With the inducer running, use a manometer to verify the vacuum is greater than .20" WC, then check for continuity across the terminals. If the vacuum is sufficient but the SPNO contact remains open, the switch requires replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.