Lennox 99M78 Auto Limit Switch 110°F-130°F

The Lennox 99M78 Auto Limit Switch is anessential part of HVAC systems, which is used for controlling and preserving the safe temperature range. This switch turns on or off heating elements depending on the ambient environment giving the device its high efficiency and avoiding thermal overloading. Its working temperature range is between 110°F and 130°F and as such, it is ideal for several heating processes. Standard on Lennox furnaces and heating units, the auto limit switch increases the dependability and safety of the system. Because it maintains the temperatures accurately, it helps to save energy and also the life of the HVAC equipment.