Description
The Lennox 11F45 is an OEM replacement SPST (Single-Pole, Single-Throw) limit switch engineered to protect furnaces and heating systems from dangerous overheating conditions. Designed to close at 185°F, this limit switch monitors heat exchanger temperatures and activates the appropriate safety or operational circuit when the set-point is reached — helping maintain reliable, safe system performance.
Key Features
- SPST (Single-Pole, Single-Throw) switching configuration
- 185°F close set-point for precise temperature-triggered circuit control
- OEM Lennox replacement part (SKU: 11F45) for accurate fit and function
- Designed for use in Lennox furnaces and compatible heating equipment
- Provides overheat protection to safeguard the heat exchanger and system components
- Durable construction built to withstand demanding HVAC operating environments
Application
The Lennox 11F45 limit switch is commonly used in residential and light-commercial furnace applications where precise temperature-based switching is required. When the monitored surface reaches 185°F, the switch closes to trigger the appropriate system response — whether activating a blower, signaling a control board, or completing a safety circuit. Always verify compatibility with your specific Lennox equipment model before installation.
Why Choose OEM Lennox Parts?
Using genuine Lennox replacement components ensures proper calibration, reliable operation, and maintained equipment warranties. The 11F45 limit switch is built to Lennox specifications, giving technicians confidence in every installation.
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