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Bard 8604-147 is an OEM 3 kW, 240V electric heat strip with a three terminal connection layout, commonly used as an electric resistance heat add on in compatible Bard wall mount HVAC equipment to provide supplemental heat during colder conditions or in heat pump defrost operation. If your unit is not producing adequate electric heat or is tripping safeties due to a failed element, replacing the heat strip with the correct Bard part number helps restore factory performance and electrical fit. Confirm kW rating, voltage, and the terminal configuration against your Bard model and wiring diagram before ordering.