Anything under 15°C is low temperature for a dehumidifier and there
is a risk of the machine icing up because the air is cooled inside
the dehumidifier until the water vapour condenses. The lower the
ambient temperature the lower the temperature inside the dehumidifier
and the closer to freezing you get.
If you do have an application where
there is little or no heating only ever buy a dehumidifier with
HOT GAS DEFROST. The following machines all have hot gas defrost.
The Mitsubishi's have a special low temperature mode.
The Amber Dry is an Absorption
dehumidifier. This means that it has no compressor to
freeze up in the first place. It will extract 5 litres a
day regardless of the temperature and is therefore more efficient
at low temperature than the other two models.
