Lennox 53J09 Auto Limit Switch 170°F-210°F

The Lennox 53J09 Auto Limit Switch is an essential safeguard required for many components of HVAC equipment including furnaces and air handlers. It also works as a thermostat which turns off the system when temperatures get high, usually between 170°F to 210°F. This is to avoid overheating and possible damage to your HVAC unit the Lennox 53J09 is an essential component that helps to protect your HVAC system and save you from possible damages that may be costly in the long run.