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Bard 171-245BX - Heat Exchanger Assembly

The Bard 171-245BX heat exchanger assembly is an OEM furnace heat exchanger package used in Bard wall-mounted gas/electric units to transfer heat from the burner to the supply airstream while keeping combustion gases sealed from the conditioned air. This is a critical mechanical component for safe, reliable heating performance, and it is the correct choice when the original exchanger is damaged, leaking, or failed inspection. Because heat exchanger fit and BTU sizing are model-specific, confirm compatibility using the unit model and serial number and reference the applicable Bard wall-mounted gas/electric parts documentation before ordering Bard 171-245BX.


  • Technical Specifications
  • Product number: 171-245BX
  • Manufacturer description: Heat Exchanger Assy 100K Serivce
  • Weight: 41.000 lbs
  • HTS Code: "8415.90.8085"

  • Previous Versions
  • S171-245 (Obsolete, superseded by 171-245BX)

$1,928.00 *

* Orders less than $50 may incure a minimum order fee.

What does the "BX" suffix mean?

Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.

A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.

Example: 8406-142BX is physically identical to 8406-142.