Bard 9043-056 - 120V to 24V 40VA Control Transformer

Bard part 9043-056 is an OEM 120V to 24V control transformer rated at 40VA, used to supply steady 24-volt power for low-voltage circuits such as contactors, relays, and control boards in Bard wall-mounted HVAC equipment. A weak or failed transformer can show up as no call for cooling or heating, intermittent control issues, or low 24V readings under load, so replacing it with the correct VA rating helps protect downstream components and restore reliable system operation. Confirm your unit’s wiring and primary voltage match 120V and verify the part number against the Bard parts list for your specific model and serial range before ordering.

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