Since They're smaller sized, they also don’t need a pump for computerized drainage. As for other desiccant dehumidifiers, they don't need a reservoir tank or drain hose for that gathered dampness. Even so, industrial desiccant versions do have to be ducted outdoors or through numerous rooms to distribute dry air https://dstdehumidifiers.co.uk/case-studies/desiccant-dehumidifiers-in-cold-stores/