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Bard 171-293BX - 75K Heat Exchanger Assembly

The Bard 171-293BX is an OEM 75,000 BTU heat exchanger assembly used in select Bard wall mounted gas/electric HVAC units to safely transfer burner heat into the supply airstream while keeping combustion gases isolated from indoor air. When a heat exchanger is cracked, leaking, or failing a safety inspection, replacing it with the correct Bard factory assembly helps restore proper heating performance, correct airflow temperatures, and reliable operation with the unit’s existing burner and safety controls. Because heat exchangers are application specific by model and series, confirm 171-293BX against your Bard unit data plate and the matching service parts list before ordering to ensure proper fit and safe installation.


  • Technical Specifications
  • Product number: 171-293BX
  • Manufacturer description: Heat Exchanger Assy 75K Serivce
  • HTS Code: "8415.90.8085"

  • Previous Versions
  • S171-293 (Obsolete, superseded by 171-293BX)

$1,692.00 *

* 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.