Description
The Lennox 25B82 2-Stage Pressure Switch 1.00/0.55 is a safety control part used to monitor air pressure levels. It detects changes in static or differential pressure and sends signals to control circuits to enable or disable system operation accordingly. In residential and light commercial HVAC systems such as furnaces and air-handling units, it is positioned within the pressure-sensing line connected to the inducer assembly or vent system. The switch operates using a diaphragm that responds to pressure variation. This support ensures safe combustion, prevents system operation under unsafe conditions.
