MeacoDry Arete One 12L Review: 12 Litres on Paper, About 5 in a UK Home
A quiet, well-made compressor dehumidifier with a HEPA filter in the box, a five-year warranty and a running cost of about 4p an hour at today’s price cap. The “12L” in the name is real — but only at 30°C and 80% humidity. In a 20°C British living room, Meaco’s own table says about 5.2 litres a day.
Where the reviews line up
The evidence comes from three places: a hands-on home test of the 12L model by Ideal Home, the full extraction-and-power table on Meaco’s own product page and blog, and the buyer ratings at John Lewis and Air Con Centre — 4.8/5 from 576 reviews and 4.9/5 from 654. Every source we read agrees on the headline: this is a good machine, and the arguments are about how good and for how much.
Three things come up everywhere. It is quiet for a compressor unit. Meaco quotes 35 dB(A) on low and 38 on high, it holds a Quiet Mark, and Ideal Home’s tester called it the quietest compressor dehumidifier she had used. It is cheap to run. At 151 W in Meaco’s 20°C test, that is 3.97p an hour at the October–December 2026 cap of 26.32p/kWh, rising to about 5.2p at the 198 W maximum. And it is easy to live with: a front tank with a viewing window, castors, a rear-airflow design that lets it sit flush against a wall, and an H13 HEPA filter included rather than sold as an extra.
Two honest caveats. The tank is small at 2.5 litres — fine in a bedroom, a daily or twice-daily chore in a wet house unless you run a hose. And the 12-litre figure needs reading carefully: Meaco publishes six conditions, and the 12.18 l/day headline is the hottest, wettest one. At 20°C and 60% it is 5.23, and at 10°C and 60% just 1.95.
Our verdict: for a flat, a bedroom or a small house with a condensation problem, this is the 12-litre class compressor dehumidifier to beat on noise and running cost, and £159.90–£179.99 is fair for it. For a cold garage or a genuinely damp three-bed, size up or look at a desiccant — the reasons are in our dehumidifier buying guide.
The three reviews this summary is built from
- Ideal HomeHands-on home test of the 12L model by Rachael Penn. The only editorial test of this exact capacity we could read.
- MeacoThe manufacturer’s six-condition extraction and wattage table. Not independent, but unusually complete.
- John Lewis & Air Con Centre4.8/5 from 576 and 4.9/5 from 654 — retailer-hosted ratings, on pages that sell it.
Before the review: four Arete Ones, and an Arete Two
“Arete One” is a range, not a model: Meaco sells it in 10, 12, 20 and 25 litre sizes, and there is a separate Arete Two 12L. Several well-known reviews of “the Arete One” — Expert Reviews’ and Mumsnet’s among them — tested the 20L, 25L or 10L, not this one. This page is about the 12L, model code ARETEONE12L. Check the code on the listing.
Specification at a glance
| Spec | Figure | Confidence |
|---|---|---|
| Extraction, 30°C / 80% RH | 12.18 l/day — the “12L” in the name | Meaco’s product page |
| Extraction, 20°C / 80% RH | 8.33 l/day | Meaco |
| Extraction, 20°C / 60% RH | 5.23 l/day — the most realistic UK indoor figure | Meaco; repeated on Meaco’s blog |
| Extraction, 10°C / 60% RH | 1.95 l/day (3.77 at 80% RH) | Meaco |
| Power draw | 151 W at 20°C / 60%; 130–198 W across conditions | Meaco; Marks Electrical repeats 151 W typical, 198 W max |
| Running cost | 3.97p an hour at 151 W; about 5.2p at 198 W | Our sums at the Ofgem cap of 26.32p/kWh, 1 Oct–31 Dec 2026 |
| Noise | 35 dB(A) low fan · 38 dB(A) high fan; Quiet Mark | Meaco’s claim; no independent measurement of the 12L found |
| Tank | 2.5 litres, front-facing with viewing window; continuous drainage via 12.5 mm hose (not supplied) | Meaco |
| Room size | “Flats, apartments, single rooms”, “2–3 bed homes”; 50 m² (Ideal Home), 60 m² (PriceSpy), 100 m² (John Lewis) | Four different answers — see below |
| Laundry mode | Smart Laundry: targets 35% RH, runs up to six hours | Ideal Home; Mumsnet’s tester wanted it longer |
| Air filter | Washable dust filter plus H13 HEPA filter included | Meaco; Meaco’s blog says H13 |
| Operating range | 5°C to 35°C | Meaco; Air Con Centre |
| Size and weight | 472 × 319 × 237 mm (H × W × D); 10.9 kg | Meaco; Marks Electrical lists 473 mm |
| Refrigerant | R290, 45 g | Meaco |
| Warranty | 5 years parts and labour | Meaco; registration recommended per Marks Electrical |
| Price | £179.99 at Meaco, John Lewis and Marks Electrical; £159.90 at Air Con Centre; from £168.49 on PriceSpy | All checked 3 October 2026 |
Ideal Home
This is the one editorial review we could read that tested the 12L itself rather than a bigger sibling. It is a living-with-it test, so there are no measured extraction or decibel figures — the numbers in the review are Meaco’s. What it adds is judgement: Penn calls it the quietest compressor dehumidifier she has tested and her top choice overall, and singles out the clothes drying, the automatic humidity sensor and the fact that the HEPA filter comes in the box.
The criticisms are practical and worth having. At 10.9 kg it is heavy to carry upstairs, even with castors. There is no wifi and no timer. And as a compressor machine it is not suited to spaces below 5°C — which rules out an unheated garage in January, and is the main reason to look elsewhere. The review prices the 12L at £179.99, the same figure Meaco and John Lewis show today, which tells you how little the list price has moved in two years.
Watch: Meaco Arete One 12L Dehumidifier Review
An independent-looking review of this exact capacity. We confirmed the title and ID through search listings only, not by opening the video, so treat the channel as unverified.
Watch on YouTube ↗Meaco
A manufacturer is not an independent source, and we label it as one. We include it because Meaco does something most dehumidifier makers do not: it publishes extraction and power at six combinations of temperature and humidity, rather than one flattering headline. That table is the single most useful thing on this page. The “12L” is 12.18 l/day at 30°C and 80% RH — conditions you get in a steamy bathroom in August. At 20°C and 60%, a normal heated room with a damp problem, the figure is 5.23 l/day at 151 W. In a cold 10°C room it falls to 1.95.
The blog post sets the Arete One against Meaco’s other 12L machines on the same 20°C / 60% basis: 5.23 l/day at 151 W against 5.18 at 149 W for the 12L ABC and 4.92 at 157 W for the 12L Low Energy. So you are not paying the Arete premium for extraction — it is essentially level. You are paying for noise (35/38 dB(A) against 36/40 and 41), the H13 HEPA filter, the front tank with a window, castors and the flush-to-wall design. Meaco’s own running-cost claim, 4p an hour on 26.32p/kWh, happens to match the cap that took effect on 1 October 2026, so for once a manufacturer cost figure is current.
Watch: Arete® One 12L and 10L Dehumidifier and Air Purifier: Official introduction
Manufacturer-style launch film, so promotional. Useful for seeing the front tank, the control panel and how the filter drawer comes out.
Watch on YouTube ↗John Lewis and Air Con Centre
These are customer ratings hosted by shops that sell the product, so treat them as a measure of satisfaction, not of performance. The volume is real — over 1,200 ratings across two retailers — and the scores are consistently very high, which matches what the editorial reviewers found. The John Lewis page highlights the same things owners and testers keep returning to: super-quiet running, castors, and an adapter so the tank water can go on the garden.
Two things on these pages need a pinch of salt. John Lewis lists a maximum room size of 100 m² and a running cost of 5p an hour; Meaco itself describes the 12L as for flats, single rooms and small homes, Ideal Home quotes 50 m², and 151 W at today’s cap is under 4p. The price is the useful part: £179.99 at John Lewis, the same as Meaco direct, and £159.90 at Air Con Centre, a Meaco specialist, on the same day.
Watch: Meaco Arete® One 12L and 10L Dehumidifier and Air Purifier
A walk-through of the 12L and 10L. Channel not confirmed, so it may be retailer- or manufacturer-made.
Watch on YouTube ↗Strengths and weak points
What holds up
- Quiet: 35–38 dB(A) claimed, a Quiet Mark, and an editorial tester calling it the quietest compressor unit she had used.
- About 4p an hour at the October 2026 price cap — 151 W in Meaco’s 20°C test.
- Meaco publishes extraction at six conditions, so you can see what it does in a cold room, not just a hot one.
- H13 HEPA filter included, plus a washable dust filter.
- Front tank with a viewing window; sits flush against a wall; castors.
- Five-year parts and labour warranty.
What people complain about
- The 2.5-litre tank fills fast in a wet room; continuous drainage needs a hose you buy separately.
- 10.9 kg — heavy to carry between floors.
- Not for spaces below 5°C, and at 10°C extraction is under 2 litres a day.
- No timer and no wifi.
- Laundry mode stops at six hours, which one long-term tester found too short.
- Extraction at 20°C is no better than Meaco’s other 12L models — the premium buys quiet and features.
Who it actually suits
Buy it if you want to control condensation or dry washing in a heated flat, bedroom or small house, the machine will run where you sleep or work so noise matters, and you like the idea of air filtering in the same box. On noise, running cost and warranty it is very hard to fault at £160–£180.
Look elsewhere if the space is unheated or regularly below 10°C (a desiccant suits that better), if you have a whole-house damp problem that needs 8–10 litres a day at normal room temperatures (go up to the 20L), or if you can live with a slightly louder machine with the tank at the back — Meaco’s own 12L ABC extracts almost exactly the same.
What we could not check
- Independent noise measurement of the 12L. The 35/38 dB(A) figures are Meaco’s. The only measured figures we found are Expert Reviews’ for the 20L Arete One, where it read about 49 dB on full against a claim of 38–40 — a different machine, but a reminder that claimed and measured decibels are rarely the same thing.
- Independent extraction testing. Nobody we could read measured litres per day on the 12L; every figure is Meaco’s.
- Which? results. Which? test scores are behind a paywall and we have not used any.
- Room size. Meaco says flats, single rooms, small homes and 2–3 bed homes; Ideal Home 50 m²; PriceSpy 60 m²; John Lewis 100 m². We cannot tell you which is right, and it depends on how damp the space is.
- Argos and Currys prices. The Argos page (product 2910349) is script-rendered and would not load for us, and we found no Currys listing for this model.
- Whether warranty registration is required. Meaco states five years; one retailer says registration is recommended. Register it anyway.
- The videos. All three were confirmed by appearing, with the same title and ID, in at least two differently worded search listings — not by opening them. Channel names were not shown in those listings.
- Long-term reliability. Retailer ratings are mostly from recent buyers; we found no failure-rate data.
Sources last checked 3 October 2026. Prices, the energy price cap and retailer ratings change — check them against the listing in front of you before ordering.