This Lennox 99W42 (catalog 610414-02) Heat Exchanger Assembly is a direct OEM replacement designed for 105K and 108K BTU furnace models. Built from durable aluminized steel, it provides efficient heat transfer, longer service life, and reliable performance under demanding heating cycles. Ideal for restoring safe, optimal furnace operation and ensuring the system runs to manufacturer specifications.

 

Key Features:

• Genuine Lennox OEM heat exchanger assembly
• Rated for 105K/108K BTU furnace applications
• Aluminized steel construction for enhanced durability
• Designed for proper airflow and high-efficiency heat transfer
• Ensures safe and reliable furnace operation
• Exact-fit replacement for compatible Lennox units

 

Specifications:

• Material: Aluminized steel
• Application: 105K and 108K BTU furnaces
• Product Type: Complete heat exchanger assembly
• OEM Part Numbers: 99W42, 610414-02