The Lennox 93W72 is an OEM replacement L155-30F limit switch engineered to protect your furnace from overheating and unsafe operating conditions. Designed as a direct replacement for compatible Lennox heating systems, this limit switch monitors heat exchanger temperatures and automatically interrupts the burner circuit when temperatures exceed the set point — helping prevent equipment damage and ensuring safe, reliable operation.
Key Features
- OEM Lennox replacement limit switch — model L155-30F
- Designed to monitor and protect against furnace overheating
- Automatically opens the burner circuit when the high-limit set point is reached
- Resets automatically once temperatures return to a safe operating range
- Direct drop-in replacement for compatible Lennox furnace models
- Helps maintain safe, efficient furnace operation
Application
This limit switch is a critical safety component in Lennox forced-air furnaces. It is intended for use by qualified HVAC technicians performing maintenance or repair on compatible Lennox heating equipment. Always verify compatibility with your specific furnace model before installation.
Product Specifications
- Brand: Lennox
- SKU: 93W72
- Model: L155-30F
- Type: High-Limit Switch
- Application: Forced-Air Furnace Overheat Protection
