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Best deals on dehumidifiers: our pick of the last-minute Black Friday savings

Dehumidifiers are a life-saver when it comes to damp, condensation and drying clothes indoors. We're hunting high and low for the very best deals on dehumidifiers in the Black Friday sales, so you can sit back and enjoy the savings.

By Poppy O'Neill | Last updated Aug 19, 2025

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Excess moisture in your home can be a serious headache, especially in winter. Whether you're dealing with condensation on your windows or mould behind your furniture, it's never fun living in damp conditions. To avoid astronomical energy bills or a drafty home, Mumsnetters are turning to dehumidifiers to improve their air quality and keep damp at bay without letting heat escape through open windows.

We're passionate about making parents' lives easier, which is why we spend hours every week scouring the Mumsnet Talk forums to bring you the very best products Mumsnet users can't live without. From the best heated airers to the best washing machines, we've got you covered with recommendations from real parents who've been in your shoes.

With colder weather on its way and Black Friday (29th November) finally just around the corner, now's a great time to shop for a dehumidifier for your home. Retailers are marking down some of the best dehumidifiers, and we're constantly updating this page with the latest, biggest and best deals on dehumidifiers.

MNHQ has early access to top deals, and we've been busy cross-referencing top deals with popular purchases on Mumsnet to spotlight the truly valuable offers on the products Mumsnetters rate.

We’re also refreshing our other deals pages too with the biggest savings across different categories, including washer dryers, vacuum cleaners, prams, electric blankets, and more - don't miss out!

Bookmark this page as we'll be updating it with great deals as they happen. For now, we've hand picked some great deals you can shop right now.

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Was £135, now £108

Challenge D015B 10 Litre Dehumidifier

What we like
  • 10l extraction per day

  • Laundry mode

  • Auto shut-off

What we don't like
  • Can be noisy

What Mumsnet users say

Pixiedust1234 · Recommended brand
My house seems especially damp this year. I bought the Challenger dehumidifiers from Argos a couple of years ago and they are brilliant as well as cheap. I have one upstairs and one downstairs and I move them into a different room each day. Shut windows and door and let it do its thing for a few hours. It also helps warm the room up too.
See Post
AutumnFroglets · Recommended brand
I bought the cheaper Challenger dehumidifier from Argos and because it's cheap (but excellent), I bought another for downstairs. I keep it in the room where I have the laundry hanging up. In a divorce I'm claiming custody of both dehumidifiers and karcher 😂
See Post
Our verdict

Affordable but excellent is the consensus on the Mumsnet Talk forums when it comes to Challenge dehumidifiers. Priced lower than market-leaders Meaco, Challenge models can still hold their own against condensation, damp and wet laundry.

This 10L dehumidifier is a great size for drying laundry - you'll be amazed at the amount of water it can collect. Snap it up now while with 20% off in the Argos Black Friday sale, and it'll help dry washing indoors over the winter.

Are there any Meaco dehumidifiers in the Black Friday sale?

Meaco is by far the most highly-recommended dehumidifier brand on Mumsnet, and we're keeping our eyes peeled for discounts on their dehumidifiers. So far, it's slim pickings, and the best our deal-hunters have found are a couple of small discounts on older and larger models in the Robert Dyas sale:

Do dehumidifiers save you money?

Yes and no - the rise in popularity of dehumidifiers in recent years comes mainly from the hike in energy prices meaning people are using their central heating more frugally. Combined with drying washing indoors over the winter months makes for a damper home: enter the dehumidifier.

Dehumidifiers help ameliorate the effects of having the central heating on less, and many models are designed to be much cheaper to run than a central heating system - from around 4p per hour. So in the long run, it's worth paying a little more for a dehumidifier with a low hourly cost, as it'll save your home from getting mouldy while costing less over the years to use.

Why do I need a dehumidifier?

Dark patches on your walls, condensation on your windows and patches of black mould or mildew are all signs your house is suffering from damp - this happens when the humidity level regularly goes above 60%.

A lack of ventilation, leaky pipes or poor insulation can cause damp, but daily life does have an impact, too – for instance, cooking, showers and drying washing indoors all add excess moisture to the air. And some houses, built before the advent of central heating and decent extractor fans, just aren’t up to coping with modern life.

So, how does that affect you? Living in a mouldy and damp home can cause serious health issues, particularly for allergy and asthma sufferers, which include an increased risk of respiratory illness and infections. Additionally, damp can make your home look unattractive and give it a musty smell, with the excess moisture causing damage to your walls, carpet, ceiling and furniture.

What does a dehumidifier do?

A dehumidifier removes excess moisture from the air to dry out the room, depositing it safely inside its water tank until you are ready to pour it away. Its job is to help you reach the optimum humidity level, and some even act as an air purifier, removing allergens and dust through their filter.

They can range in price from £30 to £450. Cheaper units tend to have a smaller capacity. They won’t always have extra features such as wheels, variable humidity levels or a laundry mode, but that may be enough for a small space or to treat a mild damp problem. The more expensive models tend to be more energy-efficient in larger rooms or households, but that doesn’t always mean they are the most effective.

Dehumidifiers do not kill mould, but they help make it inert and stop it from spreading (the spores love humid air!). You need a dehumidifier to treat the underlying cause and a good mould killer to eliminate it completely. Here’s our guide to the best mould removers so you can clean it off any surface and stop it from regrowing.

When is Black Friday 2024?

Black Friday this year is on Friday, November 29 2024. That's the official date, but many retailers will hold sales and discounts throughout November, so if you're shopping for Christmas presents, you don't have to wait until the offical Black Friday day to bag a bargain. Cyber Monday 2024 is Monday, December 2nd.

What's the difference between Black Friday and Cyber Monday?

Traditionally, Black Friday is an in-store event where shoppers could expect big discounts on items earmarked for Christmas shopping. Cyber Monday is the same but online. However, now that more and more people do their Christmas shopping online, there is less of a distinction between the two and many retailers roll the sales period into one. Either way, you can expect some big discounts over this crucial shopping weekend, particularly on tech products such as e-readers.

What’s the best way to get a Black Friday 2024 deal?

From Mumsnet users' favourite brands to the products we know you'll love, we'll be on the hunt throughout November for the biggest savings around.

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Best Black Friday toy deals: tips for shopping the sales, plus our pick of the top savings on children's toys in 2024

Best Black Friday LEGO deals: from DUPLO to Harry Potter to Frozen, we'll be seeking out the LEGO offers you don't want to miss

Best Black Friday baby product deals: save big money on popular brands like Bugaboo, Silver Cross and Babyzen

Black Friday vacuum cleaner deals: step up your cleaning routine with these robot, cordless and standard vacuum cleaners

Best Black Friday washing machine deals: Black Friday is the ideal time to get a discount on expensive appliances – here are our top picks

Best Black Friday beauty deals: our team will be finding the best beauty bargains in 2024 – including on popular brands like Charlotte Tilbury, NIP+FAB and Urban Decay

Best Boden Black Friday deals: we love Boden's quality knitwear and dresses (with pockets!). We'll be bringing you their offers on this page

Best Black Friday tumble dryer deals: save on brands like Bosch, Sharp and LG

Best Amazon Black Friday deals: a round-up of all the best bargains on Amazon during the Prime Big Deal day and Black Friday sales

Best Barbie deals: huge deals on Barbie favourites including the popular Dreamhouse

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About the author

Poppy O'Neill is a Content Editor at Mumsnet and a mother of two. She researches and reviews the products Mumsnetters swear by, with a particular focus on home essentials, laundry and fans. From a highly-recommended retractable washing line to the best quiet fans money can buy, and Mumsnet's favourite dehumidifier to the steam generator iron that'll cut your ironing time in half, she loves to deep-dive into research and find the very best products on the market.

With an MA in Creative Writing and a PGCert in Lifestyle Journalism, Poppy's written about parenting topics for The Sunday Times, The Guardian, The Mirror and The Sun. She's a best-selling, award-winning author, and her books for children and parents have been translated into 12 languages.