Lennox 10M65 Auto Limit Switch 135°F-175°F

The Lennox 10M65 is an automatic limit switch – a safety component common to many HVAC systems such as furnaces and air conditioners. It also acts as a temperature controller, measuring the system temperature and stopping operation if the temperature is outside a certain safety limit. For the 10M65, this range is between 135°F and 175°F. In high temperature conditions, the Lennox 10M65 prevents the exposure of crucial HVAC components such as compressor and heat exchanger to high temperatures that may lead to their damage by shutting off the system automatically. This protection also protects against such malfunctions, makes operation safer, and increases the service life of your HVAC equipment.