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The Bard URHX4 is an OEM replacement 4-section heat exchanger assembly used in select Bard gas heating sections to restore safe, consistent heat transfer and proper combustion airflow through the furnace. When a heat exchanger is damaged or leaking, replacing it with the correct factory part helps maintain designed temperature rise, protects downstream components, and supports reliable heating performance. Because heat exchanger fit and venting details can vary by unit family and revision, confirm URHX4 against your Bard model and serial number or the unit parts list before ordering to ensure correct application.
* Orders less than $50 may incure a minimum order fee.