A dehumidifier is an electrical appliance that draws moisture out of the air and collects it as water in a tank, lowering the relative humidity of a room. There are two main types. A compressor dehumidifier passes air over cold coils, where the moisture condenses; a desiccant dehumidifier passes it over a wheel of absorbent material, which a small heater then dries out. The manufacturer Meaco suggests a compressor model for rooms above 10°C and a desiccant model for colder ones.
At Wigwam
You can't run a dehumidifier in one of our units, because there's no power for your use. Our terms say you must not "connect or provide any utilities or services to the Unit unless authorised by Us" (clause 22(e)). A battery pack isn't a way round it: portable battery chargers, power banks and similar portable power sources can't be stored in a unit at all (clause 20(b)). Goods with a built-in battery are a different case: they're allowed, as long as they aren't stacked and air can circulate round them (clause 20.1(b)), but that doesn't extend to a separate battery used to run something. We don't run dehumidifiers in units either; our units are clean, dry and secure, not climate-controlled.
What to do instead
A dehumidifier treats damp air; the cheaper fix is not bringing the damp in. Pack everything clean and fully dry, keep it off the floor with a gap at the walls, and use breathable covers on fabric and wood. For a box of electronics or papers, a silica gel pack is the kind of small, non-electric step our own guide suggests; our entry on moisture absorbers covers the options and their limits.
If you have a dehumidifier to store, empty and dry its tank before it goes in, as with any appliance that holds water.
Related terms: Moisture absorber · Relative humidity · Heated storage · Container unit
Related questions: Do storage units have electricity? · Do I need a dehumidifier in a container unit, and how do I stop condensation?