Best Dehumidifier for Mould and Damp (2026)
The most effective dehumidifiers for tackling mould, black spot and damp walls in UK homes.
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Price
£154 – £315
Brand
In stockBosch Dry 4000 Dehumidifier
A quiet, well-engineered mid-size dehumidifier from a brand with a strong reputation for reliability — the natural choice if you want dependable performance for a bedroom or mid-size room and are prepared to pay a bit more for it.
In stockEbac 2650E 18 Litre Dehumidifier with Air Purification and Laundry Mode
The dehumidifier to buy if you specifically want a British-made unit built to last well over a decade, and don't mind paying a premium and giving up app control to get it.
In stockEcoAir DD1 Simple MK3 Desiccant Dehumidifier
The dehumidifier to buy specifically for a cold garage, shed, caravan or unheated outbuilding where compressor models lose their edge — not our first pick for a warm living room, where a compressor unit is more efficient.
In stockPro Breeze 20L OmniDry WiFi Dehumidifier
The best value 20L dehumidifier for drying laundry and general damp control — a genuine Which? Best Buy winner that undercuts the Meaco Arete Two on price without giving up much capability.
In stockMeaco MeacoDry Arete Two 20L
The best all-round dehumidifier for a UK home battling condensation, damp or slow-drying laundry. If budget allows, this is the one we'd buy first.
In stockRussell Hobbs RHDH2002 20 Litre Dehumidifier
The best value 20-litre dehumidifier in this comparison — strong extraction power for a noticeably lower price, at the cost of running louder than the premium alternatives, so it's better suited to a living room, kitchen or utility room than a bedroom.
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Best dehumidifier for mould and damp walls
For an actively damp room, a 20L compressor unit with a high extraction rate — like the Meaco Arete Two 20L — clears excess moisture fastest. Target 50% humidity; UK health guidance treats that as the ceiling above which mould growth accelerates. A dehumidifier prevents mould from coming back, but won't remove mould that's already established — that needs a mould treatment spray and, ideally, addressing the ventilation or insulation issue causing the damp in the first place.
Dehumidifier for condensation on windows
Condensation on windows is one of the clearest signs indoor humidity is too high. Running a dehumidifier overnight in the room, targeting 50-55%, is usually enough to stop it within a few nights — the Meaco Arete One 12L is specifically sized for a single bedroom with this problem.
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11 dehumidifiers compared · Amazon.co.uk prices checked August 2026