Trane SWT2973 Pressure Switch -1.33" WC/Open -1.52" WC/Close 24V

The Trane SWT2973 Pressure Switch is an essential component of HVAC systems because it has the function of measuring airflow pressure. The part operates in a manner that it only completes an electrical circuit when the airflow pressure is below -1.33 inches of WC and interrupts the circuit when the pressure is above -1.52 inches of WC. Its use is to enable the HVAC system manage some of its operations for enhanced free flow and efficiency of air as well as energy usage. The SWT2973 is a high quality switch that is compatible with 24V systems and is very reliable as well as very durable.