Lennox 13X23 is an OEM heat exchanger assembly designed for use in compatible Lennox gas furnaces. This assembly is responsible for safely transferring heat generated by combustion into the airflow while keeping combustion gases completely isolated from the conditioned air stream. As a critical safety and performance component, the heat exchanger ensures efficient heat transfer, proper combustion operation, and long-term system reliability.

Manufactured to Lennox factory specifications, this heat exchanger assembly provides an exact fit and proper alignment within the furnace cabinet, helping maintain original airflow characteristics and thermal efficiency. It is constructed from durable, high-temperature-resistant materials engineered to withstand repeated heating and cooling cycles common in residential and light commercial heating applications.

Using a genuine Lennox heat exchanger assembly like 13X23 helps restore furnace operation to OEM standards, reduces the risk of cracks or leaks associated with worn exchangers, and supports safe operation in compliance with manufacturer requirements. This part is intended for professional installation and should be matched to the correct furnace model and serial range before ordering.

Compatible with selected Lennox gas furnace models. Always verify model and serial compatibility prior to installation.

 

Manufacturer: Lennox
Part number: 13X23
Additional reference: 612216-44
Product type: Heat Exchanger Assembly
Application: Gas furnace heating systems