Description
The Lennox 12K79 is a 7-tube heat exchanger engineered as a direct OEM replacement for compatible Lennox furnace systems. Designed to restore efficient heat transfer and safe combustion gas separation, this heat exchanger helps maintain the performance and reliability your heating system demands.
Product Overview
The heat exchanger is the heart of any forced-air furnace — responsible for transferring heat from the combustion process to the circulating air stream while keeping exhaust gases safely contained. The Lennox 12K79 replaces a worn or cracked heat exchanger to restore proper furnace operation, improve heating efficiency, and eliminate the risk of combustion gas leakage into the conditioned space.
Key Features
- 7-tube heat exchanger design for effective thermal transfer
- OEM Lennox replacement part — engineered for precise fit and function
- Restores safe separation of combustion gases from supply air
- Helps maintain furnace efficiency and heating output
- Durable construction built to withstand repeated thermal cycling
- Direct replacement minimizes installation time and complexity
Application
The Lennox 12K79 is intended for use in compatible Lennox furnace models. Always verify compatibility with your specific unit model number before installation. Replacement of a heat exchanger should be performed by a qualified HVAC technician in accordance with all applicable codes and manufacturer guidelines.
Why Replace Your Heat Exchanger?
A cracked or failed heat exchanger is a serious safety concern. Carbon monoxide and other combustion byproducts can enter the living space if the heat exchanger is compromised. Replacing a faulty heat exchanger with a genuine Lennox OEM part like the 12K79 ensures proper sealing, safe operation, and continued system efficiency.
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