Ensure reliable HVAC operation with the Lennox 10F74 (OEM part number 100438-05) Definite Purpose Contactor. Engineered for durability and consistent electrical performance, this contactor is commonly used in air conditioning and heating systems to control high-voltage components like compressors and fan motors. Designed to handle demanding cycles, it provides dependable switching and long-lasting service.

This genuine Lennox replacement part helps maintain optimal system efficiency and safety, making it a trusted choice for both residential and light commercial applications. Whether you're performing routine maintenance or a critical repair, the 10F74 contactor ensures your equipment stays powered and protected.

Key Features:

Reliable performance under high-load HVAC applications

Supports smooth and consistent electrical switching

Ideal for compressors, fan motors, and resistive heating loads

Designed for long service life in Lennox systems

Perfect for technicians and contractors looking to maintain Lennox system integrity with factory-approved components.