Avalla Dehumidifiers Compared: X-125 vs X-150 vs X-200 vs S-200 (UK 2026)
If you have been searching for an Avalla dehumidifier, you have probably noticed the range can be confusing. There is the X-125, the X-150, the X-200 and then the S-200, which is actually a portable air conditioner with a dehumidifier built in. They look similar, the model numbers do not make the differences obvious, and the prices do not climb in the order you would expect.
This guide cuts through it. We will look at what each Avalla model is for, how they compare on the specs that matter, and which one suits your space, so you can buy once and get it right.
Avalla in brief
Avalla is a UK-focused brand that has built a name around damp control and indoor air quality. Its dehumidifiers use compressor technology with the company's Aero-Dynamic air circulation, designed to pull moisture out of a whole room rather than just the corner the unit sits in. The line-up runs from a compact 12L smart model up to a 20L whole-home unit, plus a 3-in-1 air conditioner for summer.
The headline point: all four of these tackle damp, condensation and mould, and all four will dry laundry indoors. The differences come down to extraction capacity, room coverage, smart features and, with the S-200, whether you also want cooling.
The Avalla range at a glance
| Model | Extraction | Room coverage | Stand-out feature | Best for |
|---|---|---|---|---|
| X-125 | 12L/day | Up to 30 m² | Smart humidistat, 42 dB, 0.21kW draw | Flats, bedrooms, home offices |
| X-150 | 16L/day | Whole home | Aero-Dynamic 190 m³/h airflow | Mid-size houses |
| X-200 | 20L/day | Whole home | Aero-Dynamic 195 m³/h, most capacity | Larger or damp-prone homes |
| S-200 | 24L/day | Up to 85 m² | 9,000 BTU cooling + dehumidify + fan | Year-round damp and summer heat |
A quick word on pricing, because it surprises people: the larger X-200 (20L) often sits below the smaller X-125 (12L) on price. That is because the X-125 carries the smart humidistat electronics and is tuned for low running costs, while the X-200 is a simpler, higher-capacity workhorse. So if raw moisture removal is all you care about, the bigger unit can be the better value.
Avalla X-125 — the smart compact
The Avalla X-125 12L Smart Dehumidifier is the one to look at if you want the quietest, cheapest-to-run unit in the range. It covers rooms up to about 30 m², moving 120 m³ of air an hour on roughly 0.21 kW/h — Avalla put the running cost at around 5p per hour, which is what makes it practical to leave on through a damp winter.
What "smart" actually means here. It is worth being precise, because the name invites the wrong assumption: the X-125 has a smart humidistat, not an app. It reads the room's humidity continuously and cycles itself to hold your target, and you set that target with a capacitive touch slider on the top panel. A large display shows the current humidity, and a colour-changing indicator light tells you at a glance whether the air is dry, comfortable or damp. There is no phone app and no WiFi — if remote control from your phone matters to you, this is not the model for it.
Noise. At a maximum of 42 dB it is the quietest unit in the range, which is the practical reason it suits bedrooms and home offices. That is around the level of a quiet library, and there is a dedicated sleep mode that drops it further for overnight running.
Tank and drainage. A 2.5L removable tank covers most rooms for a day or so. For anything continuous — a persistently damp room, or a cellar you would rather not visit daily — it takes a continuous drainage hose instead, and Avalla include a 2m hose in the box so you can run it to a drain without buying extras.
Modes. Four, and they cover the jobs people actually buy a dehumidifier for: standard dehumidifying on the humidistat, continuous dehumidifying, a clothes-drying mode that runs at maximum extraction for drying washing indoors, and a plain aeration mode for circulating air. There is a built-in timer and a washable filter, so there are no consumables to replace.
Worth knowing before you buy. It uses R290 refrigerant, which is natural and non-toxic but does mean the usual care about ventilation in very small enclosed spaces. It also needs a minimum operating temperature of 16°C — like all compressor dehumidifiers, it loses effectiveness in an unheated garage or outbuilding in mid-winter, where a desiccant model would be the better tool. The mains cable is 1.8m.
Pick the X-125 if: you want the quietest, cheapest-to-run option for a single room, and you are happy with on-device controls rather than a phone app.
Avalla X-150 — the all-rounder
The Avalla X-150 16L Dehumidifier steps up to 16L/day and uses Avalla's Aero-Dynamic technology, moving around 190 m³/h of air for whole-home coverage. It is the natural middle choice: more capacity than the X-125, but without going all the way to the 20L unit. For a typical two or three-bedroom house with general condensation, the X-150 has enough headroom.
Pick the X-150 if: you want whole-home coverage for an average UK house and a balance of capacity and price.
Avalla X-200 — maximum extraction
The Avalla X-200 20L Dehumidifier is the heavy hitter, pulling up to 20L/day with 195 m³/h airflow. If your home is large, persistently damp, or you are drying a lot of washing indoors over winter, this is the one with the most capacity in hand. And as noted above, its keen price makes it a strong value option even for buyers who do not strictly need 20L.
Pick the X-200 if: you have serious or whole-home damp, or simply want the most extraction for your money.
Avalla S-200 — the 3-in-1 for summer too
The Avalla S-200 Portable Air Conditioner with 24L Dehumidifier is a different animal. It is a 9,000 BTU portable air conditioner that also runs as a 24L/day dehumidifier and a cooling fan, with Energy Class A efficiency and coverage up to 85 m². If you are searching for the "Avalla air conditioner", this is it.
The trade-off is price and footprint — it is the most expensive unit and the largest, because you are buying three appliances in one. But if you battle damp in winter and heat in summer, it can replace two purchases and save you storing a separate AC unit.
Pick the S-200 if: you want dehumidifying through the cold months and proper cooling in summer from one machine.
Which Avalla should you buy?
- One damp room, want it quiet and cheap to run: X-125.
- Average house, general condensation: X-150.
- Big or very damp home, or best value per litre: X-200.
- Damp in winter and heat in summer: S-200.
Frequently asked questions
Are Avalla dehumidifiers any good for mould and condensation? Yes. All four are compressor-based units sized for continuous damp control, which is exactly what stops condensation on windows and the musty smell that leads to mould. Match the extraction rate to your room size and run it on a humidistat setting around 50–55% relative humidity.
Can an Avalla dehumidifier dry laundry indoors? All of the models here will dry washing indoors — point the airflow at the clothes and close the room. The X-125 has a dedicated clothes-drying mode that runs at maximum extraction, and the higher-capacity X-200 and S-200 will clear a full load fastest.
Does the Avalla X-125 have an app? No. Despite the "smart" in the name, there is no phone app and no WiFi. The X-125 is smart in the sense that it has an automatic humidistat which holds your chosen humidity level on its own, set with a touch slider on the unit. If app control is essential to you, the X-125 is not the right model.
How noisy is the Avalla X-125? Its maximum is 42 dB, the quietest in the Avalla range, with a sleep mode for overnight use. That is roughly library-quiet, which is why it is the sensible choice for a bedroom or a home office you actually work in.
Where can I find the Avalla X-125 manual? Avalla publish the user manual for each model on their own site under the product's support section, and a copy ships in the box. It covers the control panel, the drainage hose fitting and filter cleaning, which are the three things people usually go looking for.
What is the difference between the Avalla X-200 and the S-200? The X-200 is a dedicated 20L dehumidifier. The S-200 is a 3-in-1 that also provides 9,000 BTU air conditioning and a fan mode, so it costs more but covers summer cooling as well.
Why is the smaller X-125 sometimes more expensive than the larger X-200? The X-125 includes the smart humidistat and touch controls, and is tuned for low energy use at around 5p an hour, while the X-200 is a higher-capacity but simpler unit. You are paying for efficiency and features on the X-125, not raw extraction.
Prices and availability change often. Check the latest price on each product page before you buy.
