If you can only buy one, buy the dehumidifier. It does the laundry job nearly as well as a heated airer, but it also handles condensation, damp, and air quality across the whole house. A heated airer is a one-trick pony — and it’s a very good trick — but it can’t pull moisture out of your bedroom walls in February.
That’s the short version. The longer answer depends on how you actually live, what kind of property you’re in, and what you can stomach in running costs. This guide cuts through the marketing on both products and gives you a straight comparison: drying time, energy use, what each one costs to run per hour at current UK electricity rates, where each one falls down, and which combination of the two is genuinely worth the money.
The honest answer first
Three rules cover most UK households:
- One machine, smaller home, modest laundry needs: buy the dehumidifier. Specifically a 12L compressor model with a laundry mode.
- One machine, large household, daily indoor laundry, no damp problem: buy the heated airer. Specifically a covered three-tier model.
- You can stretch to both: buy both. They genuinely complement each other, and the combined running cost is still lower than a tumble dryer for most weekly laundry volumes.
The temptation is to treat this as a binary, but the products solve different problems. The dehumidifier is a moisture-control appliance that happens to be very good at drying laundry. The heated airer is a laundry appliance that happens to reduce ambient humidity slightly. Once you see them that way, the choice gets clearer.
How each one actually dries laundry
A dehumidifier doesn’t dry your washing directly. What it does is lower the relative humidity of the room the laundry is hanging in, so water evaporates from the fabric faster. Hang a wet load on a folding airer, close the door, run a 12L compressor model with laundry mode pointed at it, and most loads are dry in 4–8 hours depending on fabric weight. The dehumidifier extracts the evaporated water into its tank and cycles down once it hits target humidity.
A heated airer is a metal frame with low-power heating elements running through the bars. You drape your laundry over it, switch it on, and the warmth at each bar accelerates evaporation directly from the fabric. With a cover on top — and you should always use the cover — the heated airer becomes a low-temperature drying cabinet. Most loads dry in 4–6 hours; thicker items take longer.
Drying speed is roughly comparable on both. The differences show up in the rest of the picture.
Running costs — the part the marketing won’t tell you straight
This is where buyers get confused, because both products are sold on energy efficiency claims that depend on assumptions you can’t verify. The honest numbers, calculated at typical UK electricity rates as of early 2026:
- A 12L dehumidifier on laundry mode draws roughly 150–200 watts continuously. That works out at around 3.5–5 pence per hour.
- A 20L dehumidifier on laundry mode draws roughly 230–280 watts. That’s around 5.5–7 pence per hour.
- A three-tier heated airer with cover draws roughly 220–300 watts. That’s around 5–7.5 pence per hour.
- A standard condenser tumble dryer on a full cycle draws around 2,000–2,500 watts. A typical 90-minute cycle costs around 70p–£1.00. Heat pump tumble dryers are about 60% cheaper but still much more than either of the indoor-drying options.
So per hour, the dehumidifier and heated airer are roughly the same. The question is how long each one needs to run.
A typical wash load on a heated airer with cover takes 4–6 hours. Per load: 20–45p. A typical wash load with a dehumidifier in a closed room takes 4–8 hours. Per load: 15–40p, depending on the size of the dehumidifier and how much spare humidity-clearing it does on top.
These are close enough that running cost shouldn’t be the deciding factor. What matters is what else each machine does for the rest of the day. The dehumidifier keeps working when the laundry’s gone — clearing condensation, drying damp walls, lowering humidity below the threshold where mould grows. The heated airer goes quiet until the next load.
What each one wins on
The dehumidifier wins on:
- Whole-house value. It’s a moisture-control appliance for the whole home, not just a laundry tool. In a damp-prone UK winter, that breadth matters.
- Speed in cold rooms. Compressor dehumidifiers struggle below 15°C, but most rooms with laundry hanging in them are warmer than that. In a heated bedroom or living room they outperform the airer for thicker fabrics.
- Year-round usefulness. May, June and July still bring damp in many UK homes, especially after wet weeks. A heated airer is a winter-only product. A dehumidifier earns its keep across roughly nine months of the year.
- Mould prevention. Sustained low relative humidity below ~55% is the single biggest reason mould doesn’t grow on bedroom walls in February. A heated airer can’t do this.
- Multi-room flexibility. Move it from utility room to bedroom to bathroom as needed.
The heated airer wins on:
- Simplicity. Plug in, drape laundry, switch on, walk away. No tank to empty, no humidity readings to check, no “where do I point it” decisions.
- No tank emptying. A dehumidifier in heavy use needs its tank emptied once a day. The airer doesn’t have one — moisture is dissipated into the room (which is why you should still ventilate or use a dehumidifier alongside it ideally).
- Quieter operation. The airer is essentially silent. Even the quietest dehumidifier produces a low hum.
- Lower upfront cost. A good covered heated airer sits in the mid-range price band. A capable dehumidifier is more expensive.
- Better for delicate fabrics. The temperature on a heated airer is mild and consistent — kinder to wools and synthetics than even the gentlest tumble dryer cycle.
Specific products worth considering
If you’re buying the dehumidifier
The Meaco Arete II 12L is the default choice for most UK homes. It’s quiet enough for an evening room, has a usable laundry mode that runs the unit harder for the first three hours then drops back, and is genuinely portable.Meaco Arete II 12L is the default choice for most UK homes. It’s quiet enough for an evening room, has a usable laundry mode that runs the unit harder for the first three hours then drops back, and is genuinely portable.
View Meaco Arete II 12L Dehumidifier options on Amazon
For larger homes, damp-prone properties, or households doing daily indoor laundry, the 20L sibling is worth the upgrade.
Check Meaco Arete II 20L Dehumidifier price on Amazon
If you’re buying the heated airer
The Lakeland Dry:Soon Deluxe 3-Tier with Cover is the model most independent reviews and Mumsnet threads converge on. The cover is the critical piece — without it, the airer is barely better than draping clothes on a regular maiden in a warm room. With it, you get a contained drying environment that holds the heat.
See Lakeland Dry:Soon Deluxe 3-Tier Heated Airer with Cover on Amazon
A capable budget alternative is the Black+Decker heated airer, which sits a tier below in price and won’t last as long but does the basic job competently.
Compare Black+Decker Heated Clothes Airer options on Amazon
Head-to-head comparison
| Factor | Dehumidifier (12L compressor) | Heated airer (3-tier with cover) |
|---|---|---|
| Drying time, average load | 4–8 hours | 4–6 hours |
| Running cost per hour | ~3.5–5p | ~5–7.5p |
| Running cost per load | ~15–40p | ~20–45p |
| Setup effort | Moderate (room, position, target RH) | Minimal (plug in, drape, switch on) |
| Noise | Low hum (35–42 dB) | Effectively silent |
| Use beyond laundry | Damp control, condensation, air quality | None |
| Tank emptying | Daily during heavy use | None |
| Year-round usefulness | Roughly 9 months | Winter only |
| Footprint when not in use | Stores in a corner | Folds flat |
| Upfront price band | Mid-range to premium | Mid-range |
| Typical lifespan | 5–8 years | 3–6 years |
The matchup is closer than the marketing on either side suggests. The dehumidifier wins on versatility; the heated airer wins on convenience.
What about a tumble dryer?
A heat pump tumble dryer is the cheapest option per load if you exclusively need to dry laundry, you have the floor space, and you can absorb the upfront cost (premium price band, often £450–£700). Per load it costs around 35–55p. A vented or condenser dryer costs roughly twice that per load and dumps moisture back into the room or out through a hose.
The reason a dehumidifier or heated airer often wins for UK households isn’t the per-load cost — it’s the upfront price, the kitchen footprint, and the fact that neither machine generates lint, fabric pilling, or shrinkage. If you mostly do small loads of mixed fabrics, the slow-dry options are gentler on your clothes.
When you should buy both
There are three scenarios where buying both is genuinely worth it:
- Daily indoor laundry plus damp-prone home. The heated airer handles the daily volume; the dehumidifier sits in the background managing the humidity the airer adds back into the room.
- Large family with mixed fabric needs. Use the heated airer for thicker items (towels, jeans, jumpers) and let a dehumidifier in a separate room handle the lighter loads on a regular maiden.
- Older property with multiple problem areas. A heated airer covers the laundry; the dehumidifier moves between bathroom, basement, and bedroom depending on the week.
If you’re building a full winter laundry setup — covered airer, dehumidifier, ventilation timing, the lot — our winter laundry setup guide for UK homes walks through how to combine them without overspending.
FAQ
Which is cheaper to run, a dehumidifier or a heated airer? Per hour they’re similar — roughly 3.5–7.5 pence at typical UK electricity rates. Per load of laundry the dehumidifier often comes out slightly cheaper, but the difference is small enough that running cost shouldn’t be the deciding factor. What matters is what else the machine does for you.
Can I leave a heated airer on overnight? Most modern covered heated airers have built-in safety cut-offs and are designed for extended use, but read the manufacturer’s instructions carefully. Don’t drape laundry directly onto the heating elements; always use a cover; and don’t leave it unattended in a room with curtains touching it.
Will a dehumidifier stop my home smelling damp? Yes, if the smell is caused by elevated humidity. A dehumidifier running at 50–55% target RH will eliminate the conditions that create that musty smell. If the smell is from actual mould already growing on a surface, you need to clean the mould — the dehumidifier prevents it coming back, but it doesn’t remove what’s already there.
Do I still need to ventilate my home if I have a dehumidifier? Yes. Ventilation removes stale air, cooking smells, and CO₂. A dehumidifier removes moisture but doesn’t refresh the air. Run extractor fans during cooking and bathing as you normally would.
Will a heated airer raise my humidity? Slightly, yes — the moisture in the laundry has to go somewhere, and unless you ventilate the room or run a dehumidifier alongside, much of it ends up in the air. This is why a covered airer is better than an uncovered one (the cover slows the rate of moisture release into the room) and why pairing the airer with a dehumidifier or open window is sensible.
Can I use a heated airer in a small flat? Yes — they fold flat for storage and the covered models contain most of the moisture release. In a small flat, pairing the heated airer with even a compact dehumidifier (our guide to compact units for flats covers the options) is the cleanest setup.
The verdict
For most UK homes the dehumidifier is the better single purchase. It does the laundry job well, plus six other jobs the heated airer can’t touch — condensation control, damp prevention, mould management, basement air quality, post-shower bathroom drying, and general winter humidity reduction.
The heated airer is the better single purchase if you specifically and only have a daily-laundry-volume problem in a home that doesn’t have damp issues. That’s a real scenario, but it’s narrower than buyers realise.
If both fit your budget, buy both. The combined system is genuinely more than the sum of its parts, and total running cost is still well below a tumble dryer for most household laundry volumes.
If you’ve decided the dehumidifier is the right call, our dedicated dehumidifier-for-laundry guide covers the model selection in more detail. If you’ve decided the heated airer is the right call, our roundup of the best covered airers walks through the lineup at each price tier.