![Lennox 57W63 Secondary Heat Exchanger specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-57w63-specs.png?v=1794099020&width=1445)
This Lennox 57W63 secondary heat exchanger extracts additional heat from combustion gases after the primary heat exchanger, improving the furnace's efficiency.
This is a genuine Lennox replacement part. Confirm the part number matches your equipment's parts list before ordering.
Specifications
| Part Number | 57W63 |
|---|---|
| Brand | Lennox |
| Type | Secondary Heat Exchanger |