The Lennox 71W44 is a direct OEM replacement limit switch designed to protect furnaces and heating systems from dangerous overtemperature conditions. Identified by its L145-30F designation, this limit switch is engineered to open the circuit at 145°F and reset automatically once temperatures drop by 30°F (closing at approximately 115°F), providing reliable, repeatable high-limit protection.
As a genuine Lennox OEM component, the 71W44 is built to exact factory specifications, ensuring a precise fit and dependable performance in compatible Lennox heating equipment. Installing an OEM-matched limit switch helps maintain system efficiency, protects heat exchangers, and supports safe furnace operation season after season.
Key Features
- OEM Lennox replacement limit switch – part number 71W44
- Model designation: L145-30F
- Opens at 145°F to shut down burner operation during overtemperature events
- 30°F differential – automatically resets (closes) at approximately 115°F
- Protects heat exchangers and furnace components from heat damage
- Direct OEM replacement for compatible Lennox furnace models
- Engineered for reliable, repeatable high-limit performance
Application
The Lennox 71W44 limit switch is intended for use in Lennox furnaces and heating systems that require an L145-30F high-limit control. Always verify compatibility with your specific equipment model before installation. Consult the equipment service manual or contact a qualified HVAC technician for proper installation guidance.
