DIFFRENTIAL PRESSURE SWITCH

What is a Differential Pressure Switch?

A differential pressure switch in HVAC is a device that tracks the pressure difference between two locations within an air flow system. It is commonly utilized to detect when an air filter is becoming blocked by triggering an alarm or activating controls to resolve the issue. This ensures efficient airflow and system performance by monitoring pressure variations across components like filters and fans.

It essentially measures the pressure drop at a specific point in the system, enabling early detection of potential issues, such as clogged filters or restricted airflow.

Measures the pressure difference between two points in an HVAC system, like the pressure before and after an air filter.

Primarily used to monitor the status of air filters, as a clogged filter results in a greater pressure drop.

Aids in maintaining proper airflow, preventing inefficiencies, and identifying potential problems at an early stage.

Differential Pressure Switches are most commonly used in AHU units for detecting the pressure difference in air intake and air outlet pressures.