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4 June 2021

Top three dehumidifiers for 2021

A dehumidifier might be the answer to your prayers if your home suffers from damp, condensation and mould. We've rounded up three top dehumidifiers.
Christina Woodger
[used] Delonghi DDS30COMBI

A good dehumidifier isn't cheap, so you want to make sure that you are getting one that will help tackle high humidity in your home.

Dehumidifiers may be pricey, but they're worth it when you no longer have to battle wet windows and walls, damp air and spots of mould everywhere. A dehumidifier can also help with excess moisture caused by drying clothes indoors in the winter. 

However, not every dehumidifier is up to the job. Which is where our independent, expert dehumidifier tests come in. 

Here you will find: 

  • Three of our top dehumidifier recommendations
  •  Some of the things you need to consider when shopping for your dehumidifier 

Only logged in Which? members can view our dehumidifier results below. Not yet a member? Join Which? to get access to this and all our reviews.

Top three dehumidifiers

A great dehumidifier will work both at warmer and cooler temperatures. It won't guzzle energy, so you can leave it on and won't have to worry about your energy bill sky rocketing. 

A really great dehumidifier will also be simple to operate, not too noisy and have handy features such as a timer, easy to empty tank and intuitive control panel. 

These three dehumidifiers aced our tests and are well worth buying. 

  • 85%

    This large-capacity refrigerant does a great job of extracting moisture from the air. It's also easy to use, and it runs quietly, so you don't need to worry about it disturbing you too much if you're working or studying from home. It's energy-efficient, too. Just be aware that it's large and bulky.

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  • 81%

    This dehumidifier is energy-efficient, easy to use and - most importantly - great at extracting water from the air. It's versatile, working well in both warmer and colder conditions, making it a great choice if you're likely to need to use it in both a heated lounge, say, and unheated garage.

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  • 81%

    Small but mighty - and very versatile. It works well in warmer and colder rooms, it's lightweight, making it easily portable, and it runs quietly. A great choice if you want a dehumidifier for both heated rooms and unheated areas such as a garage, boat or caravan.

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Pricing, recommendations and test scores correct as of June 2021. 

None of these dehumidifiers strike your fancy? Browse all of our dehumidifier reviews

Damp mould behind radiator

What kind of dehumidifier do I need? 

This is a question you should consider before shopping for your dehumidifier. You will need to understand the differences before figuring out which type will suit you best. Here are some things to consider: 

Desiccant vs refrigerant dehumidifiers

  • If you will be using your dehumidifier at cool temperatures (below 21°C or room temperature), then a desiccant model will be the best for you.
  • If you'll generally be using it at room temperature, you could get a refrigerant (sometimes called compressor) or desiccant dehumidifier. Head over to our page on buying a dehumidifier to find out more about the differences between them. 
  • Most dehumidifiers won't work at freezing or close to freezing temperatures. 

Extraction rate

  • The extraction rates that manufacturers claim are usually based on testing in a hot and humid environment. So, if you're buying a 20L dehumidifier, say, you shouldn't expect your dehumidifier to literally expect 20 litres a day. 
  • However, the extraction rate can help you determine what dehumidifier you need for the space you want to dry out. Generally, the bigger the area, the worse the damp problem and/or the more of you at home engaging in moisture-causing activities, such as boiling kettles, having showers and washing clothes, the higher the extraction rate needed. 


  • Dehumidifiers can be noisy machines. If you intend to run it at night, look for a dehumidifier with a 'night mode' or a 'silent mode'. 
  • Our dehumidifier reviews identify the ones which ones run most quietly. 

For more insights into the world of dehumidifiers, check out our guide on how to buy the best dehumidifier