Description
The Trane SWT2522 Air Pressure Switch (sometimes referenced with the superseded number SWT2522/SWT02522) is a genuine OEM HVAC safety and control component engineered for furnace and combustion airflow monitoring. It detects pressure differences in the inducer and venting system to confirm proper draft before allowing ignition or continued operation, helping ensure safe and efficient furnace performance. This switch is commonly used in residential and light commercial heating systems.
Key Features
- Genuine OEM quality – Built to Trane original specifications for optimal fit and dependable performance in HVAC systems.
- 1.15 " WC pressure setpoint – Activates at a defined low pressure threshold, ensuring accurate airflow detection for safe system operation.
- SPST normally closed (N/C) switch – Remains closed below the setpoint and opens when pressure rises above it, helping manage control logic for inducer or combustion verification.
- Versatile electrical ratings – Works with typical HVAC control voltages (e.g., 24 VAC to 277 VAC) and supports various pilot and load duty requirements.
- Compact and durable design – Sturdy construction suitable for ongoing HVAC operation and repeated cycling.
- Direct replacement – Replaces older part numbers (like SWT2522) with the updated SWT02522 pressure switch for seamless compatibility.






