electriQ 30L Industrial Dehumidifier Review

At this capacity, the electriQ is built to run for long, largely unattended stretches rather than a quick session in a single room. The 7-litre tank is considerably larger than anything else in this comparison, but a genuinely damp basement or building site can still fill it within a day at full output — connecting the included continuous drainage option to a nearby drain removes that limit entirely and lets the unit run for days or weeks without checking the tank.

The digital humidistat is the main control: set a target relative humidity and the unit switches itself off once it's reached, restarting automatically if the level creeps back up. For a construction site drying out plaster or screed, or a basement that stays damp all year, leaving it on a mid-range target (50-55%) and letting the automatic mode do the work is more efficient than running it continuously. At 650W, running cost adds up faster than a domestic unit — expect somewhere around 14p per hour on a typical UK tariff when the compressor is actively running, though the humidistat cycling it on and off keeps real-world cost well below that compared with leaving it on permanently.