Ensure safe and reliable furnace operation with the Lennox 52W29 (LB-74940A) Flame Sensor Kit. Designed to detect the presence of a burner flame, this OEM replacement sensor helps prevent unburned gas from accumulating in your heating system by signaling the control board to shut off the gas supply when no flame is detected. Engineered for compatibility with select Lennox furnaces, the 52W29 kit includes the flame sensor and necessary hardware for a straightforward installation. If you're experiencing ignition failures or intermittent furnace shutdowns, this kit is a dependable solution to restore proper flame detection and ensure efficient system performance.

Key Features:

OEM Lennox part for reliable system integration

Detects burner flame to ensure safe furnace operation

Helps prevent gas buildup by signaling ignition issues

Includes sensor and mounting hardware

Easy installation for qualified HVAC professionals

Ideal for maintenance or repair, the Lennox 52W29 Flame Sensor Kit supports dependable heating system performance and safety.