The Lennox 99W41 heat exchanger replacement kit (part number 610414-01) is an OEM aluminized steel heat exchanger designed for high-capacity Lennox gas furnaces rated at 150,000 BTU. This factory-authorized replacement kit restores proper heat transfer, combustion safety, and system efficiency in compatible Lennox furnace models. Built from durable aluminized material, it offers excellent resistance to corrosion and thermal stress caused by repeated heating and cooling cycles.

This heat exchanger kit is engineered to meet original Lennox performance specifications, ensuring proper airflow, reliable combustion containment, and long-term operational safety. It is ideal for replacing cracked, failed, or deteriorated heat exchangers during furnace repair or refurbishment, helping extend equipment life while maintaining manufacturer-intended performance.

Designed for professional HVAC service applications, the Lennox 99W41 heat exchanger replacement kit supports safe furnace operation and compliance with OEM standards when installed by a qualified technician.

 

Specifications:

 

Part number: 99W41
Alternate part number: 610414-01
Product type: Heat exchanger replacement kit
BTU rating: 150,000 BTU
Material: Aluminized steel
Application: Lennox gas furnaces (model compatibility required)
Manufacturer: Lennox (OEM)