Lennox 92L21 SPST Pressure Switch 1.61" WC

The Lennox 92L21 Pressure Switch is a safety device that is manufactured for use in Lennox HVAC systems. This pressure switch measures air pressure within your system and turns on at 1.16 Inch Water Column pressure setting. It has a single pole normally open contact arrangement and has a contact current of 5Amps resistive at 125VAC. When pressure rises beyond the set limit, the triggers the electrical controls of the system to keep pressure within your HVAC system at the right level. This assists in protecting your equipment from pressure build-up that may cause damage and makes your equipment work efficiently.