Trane SWT4049 Pressure Switch 320788-704 Using it on a 1/2

Using it on a 1/2 HP or 3/4 HP motor will result in incorrect torque and potential airflow issues

directly improving fuel efficiency and combustion performance

Heavy-Duty Construction: Rated for a maximum static pressure of 400 psi and a close-off pressure up to 40 psi

Common Questions What are the symptoms of a failing Trane SEN1318 flow sensor

Trane SWT4049 Pressure Switch 320788-704 Using it on a 1/2The Trane SWT4049 High Pressure Switch is a critical safety component designed for precise refrigerant circuit monitoring in residential and light commercial HVAC systems. As a genuine OEM Trane replacement part, this pressure actuated switch is engineered to protect the compressor from catastrophic failure by interrupting the electrical circuit when discharge pressure exceeds safe operating parameters. Utilizing a factory calibrated set point, the