Trane SWT2522 Pressure Switch 1.15" WC SPST N/C

The Trane SWT2522 is a pressure switch designed for use in HVAC systems to monitor air pressure and control furnace operation. This normally closed (N/C) single pole single throw (SPST) switch is calibrated to activate at 1.15 inches water column (WC), making it ideal for ensuring proper draft pressure in heating equipment.

Key Features:

• Pressure set point: 1.15" WC (inches water column)
• SPST configuration with normally closed contacts
• Designed for Trane residential and light commercial furnaces
• Monitors draft inducer pressure to ensure safe operation
• Direct OEM replacement part for reliable performance

This pressure switch serves as a critical safety component, ensuring that the furnace has established proper draft before allowing the main burners to ignite. When adequate negative pressure is achieved, the switch closes to signal the control board that it is safe to proceed with the heating cycle.