Description
The Heatco NS2-1888-05 Pressure Switch is a low-pressure sensing control component used to monitor airflow or combustion draft conditions. It operates by detecting small pressure changes measured in inches of water column 0.6″ WC and responding by opening or closing an electrical circuit when the set threshold is reached in HVAC systems. The switch is installed in furnaces, air handlers or combustion systems during servicing or replacement where it helps ensure safe operation by confirming proper airflow or venting conditions. It supports system protection and stable performance in residential and light commercial applications.
