Trane SWT3774 Pressure Switch

The Trane SWT3774 0.05" WC SPST Pressure Switch is an OEM HVAC control component designed for pressure sensing in compatible Trane heating and cooling equipment. This switch operates at 0.05 inch water column (WC) and uses a single-pole, single-throw (SPST) contact configuration.

In HVAC applications, the pressure switch monitors airflow or draft conditions and changes the electrical control circuit when the specified pressure condition is reached. This allows the equipment controls to verify proper airflow or draft as part of the system operating sequence.

When replacing a Trane pressure switch, verify the original part number, pressure setting, electrical contact configuration, pressure connections, and equipment model. Do not substitute a switch based only on physical appearance, since the pressure setting and switching characteristics must match the equipment requirements.

Key Benefits

• Genuine Trane HVAC replacement component
• 0.05" WC pressure setting
• SPST contact configuration
• Designed for airflow and draft pressure sensing
• Suitable for compatible Trane HVAC equipment
• Direct replacement configuration for specified Trane applications

Common Questions

What does the Trane SWT3774 pressure switch do?
It monitors air pressure or draft conditions and switches the control circuit when the required pressure condition is reached.

What does 0.05" WC mean?
WC stands for inches of water column, a measurement commonly used for low air and differential pressures in HVAC systems.

Can I replace another Trane pressure switch with the SWT3774?
Only when the SWT3774 is specified for the equipment or confirmed as the correct replacement. Always verify the equipment model, pressure rating, electrical configuration, and connections before ordering.

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.

SWT3774 is the cross for SWT3776