Dehumidifier DH20 Review UK 2026
Quick verdict
Score: 8.1/10
Best for: Tackling damp, condensation and drying laundry around the home
Not for: Cold, unheated spaces below about 15°C, where a desiccant model copes better
Bottom line: A practical dehumidifier (20 litres/day, 4L tank) for keeping humidity down and preventing mould and condensation.
Overall, the Dehumidifier DH20 is a compact option aimed at damp control and clothes drying, with a rated capacity of 20 litres per day and a 4 L tank for collection. This DH20 dehumidifier review UK takes a practical view and suits small rooms such as a wardrobe, bathroom, or utility area, where condensation and black mould concerns may show up. For laundry, the clothes drying use case fits well because it is designed for that task, and the 20 L in a Day rating suggests it can handle moderate moisture. The main limit is the tank size, since the 4 L collection tank may require frequent emptying.
Key specifications
| Feature | Value Notes |
|---|---|
| Capacity | 20L/day Not specified how measured |
| Tank size | 4L Emptying frequency not specified |
| Drying mode | Laundry Details not specified |
Pros
- Removes up to 20 litres/day
- 4L tank
- Laundry mode for drying clothes indoors
Cons
- The water tank needs regular emptying unless you plumb in the drainage hose
- Running it adds to electricity use, so a humidistat or timer helps keep costs down
- Compressor models are less effective in cold rooms below about 15°C
Extraction Rate and Performance
The Dehumidifier DH20's performance is mainly defined by the amount of humidity it is rated to remove each day, listed as 20 litres/day, which sets expectations for damp rooms. Extraction rate is a maximum target, so real removal can be lower when air is cooler or when humidity levels change. The 4L tank limits continuous operation, because once it fills the unit must be emptied, which interrupts the drying cycle. By contrast, the laundry drying mode is designed to support faster dampness removal from clothes, as long as the tank is managed.
Room Size and Coverage
For wet rooms, the Dehumidifier DH20's effectiveness depends less on the room-size label and more on the amount of moisture in the air, since the unit is rated to remove up to 20 litres per day and performance can fall when conditions are less favourable. In smaller bedrooms, utility rooms, bathrooms and wardrobes, results improve when warm, damp air can circulate around the inlet and outlet. Heavier condensation on colder surfaces may require placing the unit closer, or running it for longer in laundry drying mode, because wet laundry adds moisture quickly. In larger rooms, the effect can feel uneven, so positioning and airflow become more important.
Tank Capacity and Drainage
With a 4L tank, the Dehumidifier DH20 provides a clear, manageable water-collection capacity for smaller spaces like bathrooms, utility rooms and wardrobes where dampness builds up. The practical implication is that the tank can fill relatively quickly, so regular checks may be needed during periods of heavy condensation. For laundry drying, the time between emptying cycles will depend on the drying load, so planning matters.
Noise Level
Noise levels are an important factor when choosing a dehumidifier for a bathroom, utility room, wardrobe, or small bedroom, because the unit may run for long periods to reduce dampness and condensation. Since the DH20 supports laundry drying and mould and condensation removal, it may need sustained use, particularly during damp seasons. Placing the DH20 away from sleeping areas can help, and using it during daytime can reduce disruption. Also, check that the 4L tank is fitted securely to help limit vibration.
Energy Use and Running Costs
Energy use and running costs matter because the DH20 is likely to run repeatedly whenever dampness and condensation build up in a bathroom, utility room, wardrobe, or small bedroom. Its claimed capacity is 20 litres per day, and a 4 litre tank means it can fill and require emptying before the process finishes, depending on conditions. When air is only mildly damp, it may cycle less, but heavy condensation can increase total runtime.
Modes and Controls
The DH20 provides several operating modes and basic controls aimed at removing damp and condensation in small spaces, as well as supporting clothes drying through a laundry drying mode. With a 4L tank, it uses simple settings that suit bathrooms, wardrobes and small bedrooms. For everyday dehumidifying, the controls focus on moisture removal to help reduce condensation on nearby surfaces. The laundry drying mode changes operation to support faster drying, which can be useful in utility rooms.
Compressor or Desiccant
Does the DH20 use a compressor or a desiccant system, and does it matter for daily damp control? The verified product title does not specify whether the DH20 uses a compressor or a desiccant design, so the exact dehumidifying mechanism remains not stated. In general, compressor units usually pull moisture by cooling and condensing water, whereas desiccant units absorb moisture using a drying material and may suit colder spaces. For the DH20's stated uses - black mould, damp and condensation removal, and laundry drying - the practical outcome matters more than the internal type, but technical details should be checked before buying.
Who Is This Dehumidifier For?
Who is the Dehumidifier DH20 best suited for? It fits households that need everyday help with damp and condensation, particularly in small spaces such as a wardrobe, bathroom, small bedroom or utility room. It also suits people who want to dry laundry indoors, because it includes a laundry drying mode and can remove dampness at up to 20 litres per day. Overall, it works best when targeted moisture control is the goal.
Where to Buy in the UK
Finding a place to acquire the Dehumidifier DH20 in the UK is usually easiest via major online retailers and marketplace listings, where the product page can be checked quickly for the key, verified features. Buyers should confirm that the listing states 20 litres/day performance, a 4L tank, and a laundry drying mode, since small differences can appear between listings. Buyers can compare wording such as "black mould" and "damp & condensation remover" in the description, but keep expectations aligned with what the listing actually claims. For offline options, local electrical and homeware stores may place orders. Before purchasing, buyers should check returns, delivery cost, and stock status shown on the retailer page.
Frequently Asked Questions
Is the Dehumidifier DH20 worth it?
If you have damp, condensation on windows, or laundry that will not dry, the Dehumidifier DH20 earns its place by pulling moisture out of the air at up to 20 litres/day. It tackles the cause of mould and musty smells rather than masking them - check the current Amazon UK price, as it changes often.
Is the Dehumidifier DH20 powerful enough for my home?
The Dehumidifier DH20 is rated to remove up to 20 litres/day. The headline figure is measured in warm, very humid lab conditions, so real-world extraction is usually lower - size up if your problem is severe.
What does the Dehumidifier DH20 cost to run?
Running cost depends on its wattage, how long it runs and your electricity tariff, so it is best checked against the stated power rating rather than a fixed figure. Using it on a timer or with a humidistat keeps running costs down.
Is the Dehumidifier DH20 a compressor or desiccant dehumidifier?
Compressor models are most efficient in heated rooms; desiccant models cope better in cold spaces like garages. Check which type this is before buying for an unheated area.
How often do you empty the Dehumidifier DH20?
The Dehumidifier DH20 has a 4L tank, so how often you empty it depends on how damp the air is. For continuous running, look for a model with a drainage hose option.
Can the Dehumidifier DH20 help dry laundry indoors?
Yes - the Dehumidifier DH20 has a laundry mode that runs the fan and compressor harder to speed up drying clothes indoors, which also helps prevent the damp and condensation that indoor drying causes.
Will the Dehumidifier DH20 stop damp and mould?
By holding the room's humidity down, the Dehumidifier DH20 removes the moisture that mould and dust mites need, which helps prevent condensation on windows and musty smells. Existing mould should still be cleaned off; the dehumidifier stops it coming back.