Is a defrost system or defrost controls required for a wine cellar ?
If a defrost cycle or heaters are required in a wine cellar the equipment is sized incorrectly or operating improperly. The evaporator temperature in a wine cellar should be above 35 degrees F and ideally around 40 degrees F. At these temperatures there will never be any accumulation of frost on the coil. If a wine cellar refrigeration coil freezes up it is an indication that the system is operating at an evaporator temperature that is dehumidifying the room.
