Lennox 24L51 Pressure Switch Water Column SPST 0.51"

The Lennox 24L51 is a Pressure Switch that is manufactured for the HVAC systems. It checks the air pressure within the system and causes an electrical switch to operate at a specific pressure. It also works as an air that shuts off the HVAC system if the air pressure is less than 0.51 inches of water column. This helps avoid damaging any of the system components because there is always enough airflow. It can be operated as a single-pole single-throw switch, which makes or breaks a single circuit at a time.