Lennox Y5415 - Lennox 14629002, Thermal Cutoff for Gas Fired Water Boiler, GSB8 Series, 291 Deg. F. (144 Deg. C.)

 

Lennox Y5415 thermal cutoff, part number 14629002, is a factory-specified safety component designed for Lennox gas-fired water boilers in the GSB8 series. This thermal cutoff is engineered to protect the boiler system by interrupting operation if excessive temperatures are detected, helping prevent overheating and potential system damage.

Rated to trip at 291°F (144°C), this thermal safety switch provides reliable over-temperature protection in residential and light commercial hydronic heating applications. It is manufactured to Lennox OEM specifications, ensuring proper fit, accurate temperature response, and dependable performance when used as a direct replacement.

The Lennox Y5415 thermal cutoff is commonly replaced during safety diagnostics, boiler repairs, or preventive maintenance when a faulty or tripped cutoff is identified. Using a genuine Lennox replacement helps maintain system safety, operational integrity, and manufacturer-recommended performance standards.

This component is intended for professional installation and is compatible only with specified Lennox GSB8 gas-fired water boiler models.

 

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If you need a reliable, factory-approved thermal safety solution for your Lennox boiler, the Lennox Y5415 thermal cutoff provides the correct temperature protection and long-term reliability required for safe system operation.