These links currently open manufacturer specification pages and are not paid placements. The shortlist is based on published evidence; Better Home Climate has not yet completed bedroom noise or overnight control tests.
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What we would compare first
We screened for published low-speed noise, night controls, humidistat operation, dimensions, power, temperature range and enough capacity for an occupied bedroom. Manufacturer claims remain labelled as such.
MeacoDry Arete Two 10L
Best paper fit: Typical heated bedrooms and flats
The best-balanced specification in this shortlist where low-speed noise and compact size matter more than maximum extraction.
- Low noise figure
- 35 dB(A)
- Power at 20°C / 60% RH
- 136 W
- Tank
- 2.5 L
- Weight
- 10.7 kg
- Night mode
- Yes
- Humidistat
- 40–70% RH
- Published 35 dB(A) low setting
- Night mode
- Three fan speeds
- Auto restart and child lock
- Noise character is not described by dB alone
- App support adds complexity
- Lower capacity than 20L model
MeacoDry Arete Two 20L
Best paper fit: Large bedrooms or moisture affecting connected rooms
A higher-capacity option when one machine must serve more than a small closed bedroom, provided its size and 38 dB(A) low setting are acceptable.
- Low noise figure
- 38 dB(A)
- Power at 20°C / 60% RH
- 207 W
- Tank
- 4.8 L
- Weight
- 15.1 kg
- Night mode
- Yes
- Humidistat
- 40–70% RH
- More airflow and extraction headroom
- Large tank
- Night mode
- Continuous drainage option
- Larger and heavier
- Louder published low setting than 10L
- May be excessive for one small room
EcoAir DD1 Classic MK6
Best paper fit: A bedroom that remains unusually cool
A low-temperature alternative, but its heater-based desiccant system and 300–580 W draw require a deliberate energy and heat trade-off.
- Low noise figure
- 34 dB(A)
- Power
- 300 W low / 580 W high
- Tank
- 2 L
- Weight
- 6 kg
- Operating range
- 1–40°C
- Timer
- Yes
- Published 34 dB(A) low setting
- Useful cool-room range
- Lightweight
- Warm outlet air
- Higher electricity draw
- Smaller tank
- Warm air may disrupt comfort
- No published app control
A decibel number cannot tell you whether you will sleep
Published dB(A) allows a basic comparison only when the setting and measurement method are comparable. Compressor starts, fan tone, vibration against floorboards and sudden control beeps can be more disturbing than a steady broadband sound with the same number.
Our eventual bedroom test will record sound at a fixed distance on each useful setting, note tonal peaks and check whether displays and alerts remain dark and quiet overnight.
Size for the actual overnight pattern
People add moisture by breathing while the bedroom cools, so RH commonly rises overnight. Log temperature and humidity at bedtime, through the night and after waking. Check condensation and recovery time after the door opens.
A small machine may control one closed room; a larger unit may be justified when the door stays open and connected spaces contribute moisture. Do not expect a bedroom appliance to repair a cold bridge or leak.
Shortlist comparison
The figures below are manufacturer specifications. We have not normalised them in a shared acoustic room.
| Model | Paper advantage | Lowest published noise | Power evidence | Main compromise |
|---|---|---|---|---|
| Meaco Arete Two 10L | Compact balance | 35 dB(A) | 136 W at 20°C / 60% RH | Lower capacity |
| Meaco Arete Two 20L | Capacity headroom | 38 dB(A) | 207 W at 20°C / 60% RH | Size and weight |
| EcoAir DD1 Classic MK6 | Cool-room performance | 34 dB(A) | 300 W low / 580 W high | Energy and warm air |
Placement matters before night mode
Keep all manual clearances around the inlet and outlet. A hard floor can transmit vibration; an improvised soft mat can obstruct airflow or violate the manual, so use only a stable arrangement allowed by the manufacturer. Do not position the unit where it blocks an exit or where bedding can cover it.
If running overnight is unnecessary, control the room before bedtime and measure whether humidity remains acceptable until morning. This can reduce noise without pretending that a silent machine is still treating the room.
What changes this recommendation
Choose a different category if the room regularly falls below 10°C, if the machine must serve several open rooms, or if continuous drainage is essential. Severe condensation despite ordinary room humidity suggests a surface-temperature or building issue rather than insufficient machine capacity.
Light sleepers should buy only with a workable return route until sound can be assessed in their own room. Hearing a product in a shop rarely reproduces bedroom acoustics at night.
Common questions
Questions this guide should answer
Is 35 dB quiet enough for a bedroom?
It is a relatively low published figure, but comfort depends on distance, room acoustics, vibration, tonal noise and personal sensitivity. Treat it as a shortlist signal, not a guarantee of sleep.
Should a bedroom dehumidifier run all night?
Only if the measured moisture pattern requires it and the manual permits the setup. In some rooms, pre-treating before bedtime and checking the morning result is sufficient.
What humidity should I set in a bedroom?
A target around 50–55% RH is a practical starting point for many homes, adjusted for climate, temperature and condensation. Avoid chasing an exact display number.
Are these bedroom picks physically tested?
Not yet. They are a transparent specification-led shortlist pending fixed-distance noise and overnight control tests.
Sources and review trail
We favour primary public guidance and link to the exact source so you can inspect it yourself.