Lennox 18J37 Limit Switch it ensures seamless compatibility when

it ensures seamless compatibility when servicing older equipment

Common Questions: Is the 632401R compatible with Miller or Intertherm furnaces and heat pumps

Can I cut the 48-inch rod to a shorter length in the field

and Janitrol air handlers and condensers

Technicians should check for continuity across the terminals when the system reached the 55 PSI reset threshold

Lennox 18J37 Limit Switch it ensures seamless compatibility whenThe Lennox 18J37 Limit Switch is a critical safety component engineered for high performance thermal regulation in residential and light industrial furnaces. As a normally closed disc style limit control, this genuine OEM Lennox replacement part is specifically designed to prevent heat exchanger damage by interrupting the burner circuit if internal temperatures exceed safety thresholds. Featuring a yellow color coded sleeve for rapid field