York S1-024-35978-000 Close On Fall Pressure Switch 0.67" WC SPNO

The York S1-024-35978-000 For HVAC systems, the Close On Fall Pressure Switch is a safety device that is vital. As a pressure activated switch it interrupts the electrical supply when the water column pressure drops to 0.67”. This single pole, normally open switch is used in furnaces and air handlers, as well as other HVAC equipment to control airflow. It opens when the pressure goes down to the set level, signaling the control board to act as by pausing the machine to prevent injury. This pressure switch is essential to the safety of heating and cooling systems because it ensures that the right airflow is maintained by guaranteeing pressure. It avoids problems like the one that happens when there is a lack of fresh air inside the system, for example, overheating.