If you’re looking for a dehumidifier that won’t break the bank, I’m confident that one of the best dehumidifiers under £100 will fit the bill. After all, these dehumidifiers may be small (and extremely cheap), but they’re still mighty.
However, I know that choosing the right option to invest in can be difficult. These mini dehumidifiers usually have small price tags because they're less powerful than others on the market, with moisture extraction rates of 0.5L per day and under. That’s why the Ideal Home team has vetted the cheapest offerings from leading brands like ProBreeze, Russell Hobbs, Black + Decker and Challenge to see whether they can actually cut the mustard against the best dehumidifiers with heftier price tags.
We’ve assessed everything from extraction rate to water tank capacity, ease of use, and even the size of these budget dehumidifiers to see whether they are worth the investment. And with this extensive testing knowledge in our back pocket, we’ve been able to include our 6 top-rated budget dehumidifiers under £100 in the UK in this guide.
The quick list
Short on time? This quick list is an overview of the best dehumidifiers under £100. You'll find more information on each low cost dehumidifierand why our testers recommend it if you keep on scrolling.
Best low cost dehumidifier
A low cost dehumidifier comes with a lower extraction rate by default, but the ProBreeze's 0.5L extraction rate is still higher than any other dehumidifier we've found under £100, making it capable of reducing moisture in a 15m² area. It's 1.5L water tank is also super generous considering its small build. Easy to use, relatively quiet, and with relatively low energy use we think this is the best dehumidifier for under £100.
Cheapest dehumidifier
At 0.25L, this dehumidifier's extraction rate is half that of our top-rated ProBreeze 1500ml Mini Dehumidifier, although it's 0.9L water tank is generous considering its super compact build. However, this is one of the cheapest dehumidifiers on the market, and as long as you don't expect it to handle major moisture issues, in our tests it still did a good job of improving the air quality in small rooms of under 8m².
Low energy use
Along with the Russell Hobbs dehumidifier, this Challenge dehumidifier is one of the most compact in our round-up measuring just H22 x W15 x D13cm. Its small size means a low 0.3L per day extraction rate and its water tank is also on the small side with a 0.5L capacity. However, it's energy use is also low, being powered by just 22W of electricity, and its removable dust filter means you can keep it clean and running as efficiently as possible.
Smallest dehumidifier
If you’re looking for a small dehumidifier, then the Russell Hobbs RHDH1061 is about as compact as it gets, measuring just H22 x W14 x D14cm and weighing in at 0.9kg. Its size does mean it lacks power, extracting just 0.3L of moisture per day, and its 0.6L water tank means you'll be emptying it fairly frequently. However, if you want a super compact design, this mini dehumidifier ticks all the boxes.
Most stylish
A 0.45L extraction rate and 1L water tank put this dehumidifier on a par with the best-in-class ProBreeze in terms of performance. However, the CONOPU 1000ml Dehumidifier also offers something extra in the style stakes, with seven multi-coloured lights that activate during operation. Scroll through to find your favourite, leave it to automatically rotate through each colourway, or turn the lights off as you wish. In our tests, it was just let down by noisier operation than the rest of the low cost dehumidifiers in this guide.
Best non-electric
Although a non-electric dehumidifier will never be able to compete with the power of an electric model, the Bostik Breathe certainly does a good job. With a generous 1.2L water tank and a 25m2 range, this compact moisture absorber successfully dried out our reviewer's damp and condensation-filled bathroom. And one tab will last four months before needing to be refilled.
Best low cost dehumidifier overall
Performance I tested this dehumidifier in the kitchen and bathroom, the two areas of my home that suffer the most from excess humidity. I also left it running overnight in the bedroom and was pleasantly surprised to wake up with no condensation on the windows. Although it's the largest size-wise in this budget dehumidifier round-up, it's still compact enough to place on a sideboard, shelving or bedside table. Plus, it can sit flush against the wall to save on space.
Ease of use This dehumidifier is super easy to operate because there is only one on/off button. However, this is situated on the back of the unit, which means it can be fiddly to access. Two LED lights will glow green when it’s in operation and red when the water tank is full. A generous 1500ml tank also means you won't constantly be emptying it, whilst the automatic shut off when the tank is full is great for peace of mind.
Noise levels This dehumidifier uses a Peltier condenser, which means there's no noisy compressor to disturb you, however, that doesn't make the ProBreeze 1500ml Mini dehumidifier totally silent, there's still the noise of the fan to adjust to. I left it running in my bedroom overnight, and although the 40dBA noise is noticeable and initially bothered me, I soon zoned it out.
Energy use Using just 40W of energy to run, the ProBreeze 1500ml Mini dehumidifier is very cheap to operate. I kept a close eye on my smart meter whilst using it and it didn’t even register, at current energy prices costing less that 1p per hour to run.
Read our full ProBreeze 1500ml Mini Dehumidifier review for more details.
Cheapest dehumidifier
Performance This dehumidifier's extraction rate is half that of our top-rated ProBreeze model, although its 0.9L water tank is generous considering its super compact build. However, with a recommended retail price of well under £50, this is one of the cheapest dehumidifiers on the market - as long as you don't expect it to handle major moisture issues. In our tests it still did a good job of improving the air quality in small rooms of under 8m².
Ease of use This dehumidifier's functionality is basic, either turning on or off. However, unlike some on this list, its power button is really well placed right at the front of the unit, although its water tank is a bit more of a faff, being accessed from the rear of the unit. The main downside of its design is the placement of the power cord, which sticks out from the side the dehumidifier and rather ruins its aesthetic. However, this mini dehumidifier is super compact and sits neatly on any surface.
Noise levels I could barely hear the Black+Decker Mini Dehumidifier running, even though the official specifications say it generates 30dB of noise. I left it running overnight in my bedroom, and it didn’t disturb me.
Energy use Just like the Challenge 0.5 Litre Mini Dehumidifier, the Black+Decker Mini Dehumidifier's energy use is low, with just 22.5W required for operation.
Low energy use
Performance Along with the Russell Hobbs dehumidifier, this model is one of the most compact in our round-up. That makes it hugely portable, although its small size does mean a low extraction rate (about the size of a large glass of wine) and its water tank is also small. However, I tested it several times in my kitchen whilst cooking and found it collected excess moisture caused by steamy conditions efficiently. If you need an extra bit of oompf though - and your budget can stretch a bit further - I'd suggest sizing up to the Challenge D015B 12L Dehumidifier for £130.
Ease of use Operation is simple with just one on/off button and two LED lights that will let you know that it’s in operation and alert you when the water tank is full. It also has auto shut-off when the tank capacity is reached. To empty the water tank, you pull the tank out from the front of the machine. Then there’s a special water drain bung, which you can lift up to effortlessly pour the water away.
Noise levels I found this one of the quietest small dehumidifiers in this round up. It produces 35dB of noise whilst operating, but I didn't really hear it running at all. A couple of times, I even had to lean in to make sure it was actually switched on!
Energy use The Challenge 0.5 Litre Mini Dehumidifier's low energy use is impressive, using just 22W of energy to power its operation. Along with the Black+Decker Mini Dehumidifier (which uses 23W and 22.5W, respectively), this makes it one of the lowest-cost dehumidifiers to switch on, with running costs of well under 1p per hour at current energy prices.
Smallest dehumidifier
Performance Despite being small, the Russell Hobbs Portable Dehumidifier still feels robust and well-made. Its small size does mean it lacks power, though, and the small water tank means you'll be emptying it fairly frequently. I tested it out in a few different areas of my home, and it didn’t do great in spaces where there was a sudden excess of moisture, but in less intense conditions, it did manage to improve general humidity levels, making the air in rooms under 15m2 feel fresher.
Ease of use Like all of the low-cost dehumidifiers on our list, functionality is basic, but that makes operation hassle-free. There is just one on/off button, which you’ll find at the top of the dehumidifier. Then, the water tank pulls out from the back of the machine, but you do need to remove the lid to empty it. This can be a little tricky to remove, especially when it’s full, so just make sure you do it over the sink rather than by any electronics to make sure you don’t spill any water.
Noise levels The official specifications say that this dehumidifier is 37dBA but I barely heard it. I didn’t even realise it was on when I was in the room. It runs so quietly, you occasionally hear the odd drip as the water hits the already collected water in the tray but that’s about it. It’s ideal for use when you’re working or overnight as it won’t disturb the peace.
Energy use The one thing that sets this mini dehumidifier apart from its competition is its energy use. At 100W, this compact dehumidifier uses double the energy of the other low cost dehumidifiers in our round-up.
Read our full Russell Hobbs RHDH1061 Portable Dehumidifier review for more details.
Most stylish low cost dehumidifier
Performance The CONOPU 1000ml Dehumidifier is this guide's second-most powerful budget dehumidifier. During testing, I used it mainly in the kitchen to eliminate build up of condensation when she was cooking, and it worked well at removing some of the excess moisture. In the bedroom, it got rid of some of the morning condensation but struggled to keep up in my larger room.
Ease of use This is a simple dehumidifier to use as there are only two buttons; one on/off switch and another that operates its multi-coloured lights. It's the light function (with a 7-colour cycle) that really sets the CONOPU apart from its competitors. If you’d prefer a static colour, just wait for your favourite one to appear and press the light switch again to hold that colour. If you want to turn the light off, you just tap the light button twice.
Noise levels Sadly, the noise levels of this mini dehumidifier let it down. At 39dB, it's the loudest of all the low cost dehumidifiers in our round-up. And, for such a small unit, it does make a lot of noise. I found I couldn’t leave it on overnight because it irritated me, which is a shame as its light feature means it would otherwise have proved itself a good nightlight.
Energy use The CONOPU uses 40W of energy, which is on a par with the ProBreeze dehumidifier, and relatively low in the grand scheme of things, costing around 1p per hour to run at current energy prices.
Best non-electric dehumidifier
Performance The Bostik Breathe Dehumidifier is more of a moisture absorber than a traditional dehumidifier, but this non-electric option is still extremely effective at getting rid of damp and preventing condensation. Our tester used it in her damp bathroom and found it to be everything she needed for her 'muggy' space. The 1.2L water tank is generous for such a compact budget dehumidifier, and it dried out her bathroom in no time.
Ease of use This is a very hands-off dehumidifier, as you just need to pop in the moisture tab into the indicated slot in the upper compartment of the appliance and place the lid back on top. Then, you just need to empty the water tank regularly and replace the moisture tab when you can visibly see that it needs replacing.
Noise levels As it's completely silent, this dehumidifier is the quietest budget dehumidifier you can buy. You can put it in any room, and you won't be able to hear it at all.
Energy use As the Bostik Breathe Dehumidifier is non-electric, it doesn't use any energy at all and is completely free to run. However, you do need to buy refills every few months.
Read our full Bostik Breathe Dehumidifier review for more details.
Best dehumidifiers under £100 comparison at a glance
| Budget Dehumidifier | Price | Ideal Home Rating | Brand Trustpilot Score | Sizes Available | Type |
| Pro Breeze 1500ml Mini Dehumidifier | From £44.99 | 4 | 3.8 | 0.5L | Peltier |
| Black+Decker 900ml Mini Dehumidifier | £39.99 | 3.5 | 3.2 | 0.9L | Peltier |
| Challenge 0.5 Litre Mini Dehumidifier | £50 | 3.5 | 4.0 | 0.5L | Peltier |
| Russell Hobbs RHDH1061 Dehumidifier | £54.99 | 3.5 | 4.1 | 0.6L | Compressor |
| CONOPU 1000ml Dehumidifier | £49.99 | 3 | 2.9 | 1L | Peltier |
| Bostik Breathe Dehumidifier | £13.99 | 3 | 2.1 | 1.2L | Moisture Absorber |
How we test
We're very proud of how we test at Ideal Home. We will only ever recommend budget dehumidifiers that we have hands-on experience of and only if we believe they're worth the money. And you can find full details of our review process on our how we test dehumidifiers page.
To compile this particular guide, our team of reviewers tested a host of bestselling budget dehumidifiers and assessed various performance indicators, such as moisture extraction rate, water tank capacity, ease of use, design, and, of course, the price point, to find the best-performing dehumidifiers under £100. We also considered the size and weight of each appliance to find the most portable options, plus each model's noise levels.
These mini dehumidifiers were also all tested in real homes and under real-life conditions to allow our reviewers to use them as naturally as possible. This allows us to understand the possible pitfalls genuine customers may experience.
Where possible, we always try to compare the budget dehumidifiers against each other, too, to help you choose the right option for your home and needs.
After our thorough assessment, we can then assign the best dehumidifiers under £100 a dedicated star rating. They are as follows:
5 stars - a perfect dehumidifier that does exactly what you expect and cannot be faulted in any way.
4.5 stars - the small dehumidifier is near-perfect, but leaves us wanting for a bit more and so loses that last half-mark.
4 stars - an impressive budget dehumidifier that is worth your money but may need some fine-tuning before it suits every home.
3 stars - a good dehumidifier that works well but doesn't blow us away with its moisture-absorbing abilities or functionality.
2 stars - the dehumidifier lacks key features but is still extremely affordable, so it may suit someone looking for a budget dehumidifier.
1 star - the dehumidifier does not work as intended, and we would advise you not to buy it even though it's extremely cheap.
How to choose the best dehumidifier under £100
Our guide on how to choose a dehumidifier should help you better understand what you need for your home, but if you're leaning towards one of the best dehumidifiers under £100 in the UK, there are some other factors you need to consider. This includes:
The size: If you're shopping for a budget dehumidifier, the first thing to understand is that you're unlikely to find one suitable for large areas or that can handle high moisture levels. Generally speaking, most homes benefit from a dehumidifier that can extract at least 10L of moisture from the air per day, and the extraction rates of cheap dehumidifiers are usually far lower than that. For example, the best dehumidifier under £100 in our round-up, the ProBreeze 1500ml Mini Dehumidifier, has an extraction rate of just 0.5L per day.
The type: There are typically four main types of dehumidifiers: compressor, desiccant, refrigerant, and Peltier. And while some people believe that desiccant dehumidifiers are better, they all have their perks and potential downfalls. Most mini dehumidifiers (including all but two in this guide) are Peltier, so you'll have to up your budget if you want a different type.
Functionality: Dehumidifiers can be used to get rid of damp and condensation or dry clothes, so it's important to decide what you want to use them for before you buy one. If it's the latter, you need to know what size dehumidifier you need to dry clothes - and it may be that a mini dehumidifier just doesn't cut it.
Noise levels: As most cheap dehumidifiers use Peltier condensers, noise levels are already lower than more powerful compressor dehumidifiers - but it's still a good idea to check noise levels before buying a budget dehumidifier. All dehumidifiers should give their operating volumes (measured in dB) in the specifications.
Energy use: It's worth considering its energy use too, as a cheap dehumidifier with high running costs won't be as good value as it might appear. 40W seems to be the average for a low-cost Peltier dehumidifier, although several options in our round-up come in even lower, requiring just 22-23W of energy, which means running costs are well under 1p per hour at current energy prices.
Price: Obviously, the best dehumidifiers under £100 won't ever cost you more than that. But even budget dehumidifiers come in a variety of price points, and it's important to decide on your own budget before investing in this appliance. Just be warned that the cheaper the dehumidifier is, the less powerful it'll likely be.
FAQs
How much is the cheapest dehumidifier?
Why you can trust Ideal Home Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
The cheapest dehumidifier we’d recommended is the Black+Decker 900ml Mini Dehumidifier. This is currently priced well under £50, which is incredible value, but it is only capable of removing up to 250ml of excess moisture from the air. However, the best dehumidifier under £100 is, in our opinion, the ProBreeze 1500ml Mini Dehumidifier.
If you can extend your budget a little, then it’s well worth looking at the Meaco Arete Two Dehumidifier. This is more of an investment, but it is our top-rated dehumidifier overall. Plus, it's quiet, easy to use, works superbly and is very energy-efficient compared to other compressor models. Its Smart Laundry Mode also makes it one of the best dehumidifiers for drying washing indoors.
There are 10, 12, 20 and 25L models available, and all offer a built-in air purifier, which means they improve indoor air quality in more ways than one. You can get the full details in our MeacoDry Arete Two Dehumidifier review.
Are cheap dehumidifiers worth it?
If you don't have too large of a damp problem, or only have a small area where you want to reduce humidity, then a cheap dehumidifier can be worth it.
The main downside of a low cost dehumidifier is that the low price tag reflects a low extraction rate, which means they don't have the power to remove that much moisture from the air.
As with most things, you tend to get what you pay for, and although a cheap dehumidifier for under £100 can help to reduce moisture levels in the home, you're going to get a more powerful dehumidifier and better moisture control by spending over £100.
When is the best time to buy a cheap dehumidifier?
Dehumidifiers start to sell quickly as soon as the autumn weather rolls in and our homes begin to struggle with damp. As such, you can usually find the lowest prices on dehumidifiers during the summer months when sales are slow and retailers are more likely to discount. However, during these months stock can be harder to find.
Another good bet is waiting for Amazon Prime Day dehumidifier deals to land – keep an eye on our Amazon Prime Day deals page to see when the next event is due to start – or to shop Black Friday dehumidifier deals at the end of November when the Black Friday price-slashing extravaganza tends to produce some extremely good prices. Our dehumidifier deals page will have all of the best prices on dehumidifiers over each sales event.
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