Reznor 205821 SPST Pressure Switch 0.50" WC

The Reznor 205821 SPST Pressure Switch is used to monitor pressure changes and regulate the flow of air in HVAC systems. It turns on or off depending on the pressure level of 0.50" of water column. It is designed to have a Single Pole Single Throw and it operates on pressure changes for the better performance of a furnace or heater. It plays the role of safety by avoiding wrong combustion or flow of air. It makes the durability of the system, avoids overheating of the equipment, and increases the life of the equipment by providing optimum energy in heating applications.