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Bard part number 8620-070 is an OEM DCH080 IDB kit intended for servicing Bard wall mounted HVAC equipment that uses an induced draft blower (IDB) assembly for proper combustion airflow and safe venting on gas heat sections. This kit is typically chosen when the existing induced draft blower has bearing noise, heat related failures, or airflow issues that can cause ignition or pressure proving problems. Using the correct Bard kit helps restore designed draft performance and maintains proper operation with the unit’s factory controls, but because kit contents can vary by model series and revision, confirm the exact unit model and serial number against the Bard parts list or service manual before ordering.