• Home
• Contact
• About us
• Bard Equipment
• Bard Parts

• S171-317 OBSOLETE

• Heat Exchanger 100K Service

Bard S171-317 is an OEM 100K BTU service heat exchanger assembly used in Bard wall mounted gas/electric HVAC units, where it transfers heat safely from the burner section into the supply airstream for reliable space heating. This replacement is intended to restore proper heat output and stable furnace operation on applicable Bard WG and W-series gas/electric models that specify a 100K heat exchanger in the burner components list. Because heat exchangers are model and capacity specific, confirm your unit model and serial number and match the exact part number before ordering to ensure correct fit and safe operation.