Best Dehumidifiers Under £100 UK
Under £100, dehumidifiers split into two camps: budget-brand compressors that pack in a lot of extraction for the money, and compact or mini units aimed at a single small room. Both have their place in a UK flat — the trick is matching the type to the job.
Just be realistic about what the price buys. Sub-£100 compressors rarely have the efficiency, quiet running or long-term track record of premium models, and minis are only ever meant for light condensation in one room.
QUICK ANSWER
Under £100 you are choosing between budget-brand compressors that offer a lot of capacity for the money, and compact or mini units for a single room. For a whole flat, a budget 10–12L compressor is the best value; for one small room, a near-silent mini.
Editorial note: BetterFlat is an independent UK home advice website. We research products based on suitability for flats, practical features, value for money and publicly available product information — we have not tested every product hands-on. Some links are affiliate links: if you buy through them we may earn a commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. See our affiliate disclosure and how we review products.
Our top pick: Pro Breeze 12L Compressor Dehumidifier — best for the most extraction for the least money
Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Who this guide is for
Anyone on a tight budget who wants to tackle condensation or damp in a flat without spending £150+ on a premium dehumidifier.
Our picks at a glance
| Pick | Best for |
|---|---|
| Pro Breeze 12L Compressor Dehumidifier See details ↓ |
The most extraction for the least money |
| Pro Breeze 500ml Mini Dehumidifier See details ↓ |
Light condensation in a small room |
| EasyAcc 1200ml Electric Dehumidifier See details ↓ |
A single room with moderate condensation |
How we chose
We looked at what the budget end genuinely delivers — daily extraction, tank size, noise and whether a laundry mode is included — and where the sensible compromises sit compared with paying more. We describe published specifications and manufacturer information rather than star ratings, which change. Any prices mentioned are indicative guide figures only — check the current price on Amazon before buying.
Our picks in detail
BEST CAPACITY UNDER £100 — Pro Breeze 12L Compressor Dehumidifier
Best for: The most extraction for the least money
A full-size 12L/day compressor with a 2L tank and a laundry mode, sitting right at the top of the under-£100 bracket — about the most extraction you can get at this price, and enough for a whole small flat.
Pros: High capacity for the price, laundry mode, 2L tank.
Cons: Bulkier and noisier than a mini unit; less refined than the premium models.
Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.BEST NEAR-SILENT MINI — Pro Breeze 500ml Mini Dehumidifier
Best for: Light condensation in a small room
A tiny, near-silent unit for under £30 — ideal for a wardrobe, small bedroom or caravan with mild damp.
Pros: Very cheap, near-silent, tiny.
Cons: Low capacity; empties often; not for a whole flat.
BEST MID-SIZE MINI — EasyAcc 1200ml Electric Dehumidifier
Best for: A single room with moderate condensation
A larger-tank mini that runs quietly and empties less often than a 500ml unit, for around £50.
Pros: Bigger tank than a mini, quiet, affordable.
Cons: Still limited to one room; low extraction vs a compressor.
Details)
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Prices and availability on Amazon are accurate as of the date of publication and are subject to change.
| Your flat | Suggested capacity | Why |
|---|---|---|
| Studio or one bedroom | 10L a day | Enough for everyday condensation on windows and walls |
| Two bedrooms | 10L a day, or 12L if damp is bad or more than two of you live there | More people means more moisture in the air |
| Three bedrooms or a large flat | 20L a day | A small unit will run constantly and still fall behind |
| Any room below 10°C | Choose desiccant, whatever the capacity | Capacity does not fix a compressor struggling in the cold |
Bigger is not automatically better: an oversized unit costs more to buy and more to run. Start with the capacity above and only go up if the flat is genuinely damp rather than just occasionally steamy.
Sizing guidance: Meaco. Note that rated capacity is measured at 30°C and 80% humidity, so a cool UK flat will always collect less than the figure on the box.
How to choose
- What under £100 buys: either a budget compressor with real capacity, or a quiet mini for one room.
- Budget-brand caveat: cheaper compressors may lack a humidistat and be less efficient or durable.
- Mini vs compressor: minis suit light damp in a single room; compressors handle a whole flat.
- Running cost: without a humidistat, a unit runs constantly — watch the electricity use.
- Tank size: a bigger tank means less emptying.
- Stretch a little? Around £130 buys a proper branded compressor with a humidistat if you can.
Common questions
Is a cheap dehumidifier worth buying?
For light condensation in one room, a cheap mini is fine. For a whole flat, a budget compressor works but often lacks a humidistat and efficiency — if you can stretch to around £130 you get a much better branded unit.
What is the cheapest dehumidifier that works for a whole flat?
A full-size compressor at the top of the under-£100 bracket is the cheapest that genuinely keeps up in a flat. Below that you are into minis meant for a single small room.
Are mini dehumidifiers any good?
They are good at what they are designed for: light condensation in a small, enclosed space like a wardrobe, bathroom or single bedroom. They cannot dry out a whole flat.
Our recommendation
For a whole flat on a budget, a full-size 12L compressor near the £100 mark gives the most capacity for the money — just accept the trade-off in refinement. For one small room, the Pro Breeze 500ml Mini is a quiet, cheap fix.
Related guides
- Condensation Risk Calculator — free tool
- Best Dehumidifiers for UK Flats
- Best Dehumidifiers for Mould
- How to Prevent Mould in a Flat
- Best Moisture Meters for Walls UK
- Damp & Mould hub
