Carrier HR81LG020 Flow Switch

The Carrier HR81LG020 Flow Switch functions as a water flow monitoring part which specifically operates in HVAC systems throughout boilers and hydronic heating systems. The device checks flow changes to activate or deactivate equipment according to established conditions thus maintaining system functionality. The flow switch protects systems from insufficient water flow while improving reliability and energy efficiency and preventing expensive maintenance costs which makes it essential for heating and cooling system performance.