York S1-024-35268-000 SPNO Air Pressure Switch 0.70"/1.25" WC Close On Fall

The York S1-024-35268-000 SPNO Air Pressure Switch is an essential part of equipment that is used in measuring air pressure in HVAC systems. This pressure switch has a 0.70/1.25" WC rating, which means that it will work at such pressure settings and it is an SPNO switch, which means that it will be in a closed position when the pressure is low. Fiberglass is usually used in heaters and air-conditioning facilities such as furnaces, air-handling, and ventilation products for adequate airflow and to help the system work. When the pressure is below the set pressure the switch turns on and the system changes or turns off to avoid further damage or loss of efficiency.