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The Bard 8408-010BX freeze protect thermostat is an OEM low-temperature safety control used on Bard wall-mount air conditioners and heat pumps to help prevent freeze-up damage in cold conditions. This thermostat is designed to monitor temperature at the intended sensing location and switch the appropriate circuit at its setpoints, commonly referenced as 38F and 58F for freeze protection control, so the unit can respond before icing or coil freeze becomes a problem. If you are replacing a failed or intermittent freeze stat, using the correct Bard part number 8408-010BX helps ensure proper fit, wiring compatibility, and reliable operation with the original Bard control strategy.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.