Yes, a dehumidifier can be left on while you sleep, provided the device is positioned correctly, plugged directly into a socket, and the water tank does not overflow. A timer, a safety sensor for a full tank, and a night mode with the display turned off make using it in the bedroom more comfortable and safer. Ventilation is still necessary.
Why use a dehumidifier in the bedroom?
In autumn and winter, moisture tends to linger in a bedroom more quickly: you exhale moisture at night, the windows are closed, and the exterior walls are cold. This can be seen in fogged-up windows or a musty smell. According to Milieu Centraal, too much moisture can cause mould on walls and ceilings and moisture will linger if you do not ventilate sufficiently. A dehumidifier can reduce the moisture in the air, but it does not remove the cause.
Safe use in the bedroom
For any electrical appliance that is left on for extended periods, a number of basic rules apply. The fire brigade, for example, advises not to connect large power consumers to an extension cord or power strip and to ensure that heat from appliances can always escape. For a dehumidifier, this means:
Place the device on a flat, stable surface, with space around it so that air can flow freely. Plug it directly into a socket. Do not place clothes or blankets on or against the device. Check the cord for damage. And empty the tank regularly, even though the device turns itself off when the tank is full.
Smart settings: timer and night mode
You do not need to run a dehumidifier all night. It often works well to turn it on a few hours before going to bed and use a timer to switch it off. This way, the air is drier when you go to bed, and you will be less bothered by a glowing display or noise during the night. Meanwhile, keep the room well ventilated. Read how to ventilate a bedroom during the night to find out how to get fresh air into your bedroom at night.
| Situation | Advice |
|---|---|
| Fogged-up windows in the morning | Run the dehumidifier for a few hours before going to bed and ventilate during the day |
| You are a light sleeper | Use the timer and the night mode |
| Small bedroom | Do not place the device right next to the bed and leave the door ajar |
| Tank almost full | Empty the tank beforehand; the safety sensor switches the device off when the tank is full |
Direct answer: use a dehumidifier in the bedroom preferably with a timer, in a stable location and plugged in directly, and continue to ventilate.
Product in focus: Dynter DH251 dehumidifier
The Dynter DH251 dehumidifier has features that are suitable for a bedroom.
Night mode: the display turns off for a peaceful night's sleep.
Timer: adjustable from 1 to 24 hours.
Safety sensor: switches the device off when the tank is full.
Water tank and range: 3800 ml, up to 900 ml of dehumidification per day, for rooms up to 55 m².
Consumption and weight: 80 W and 2.5 kg.
Based on an assumption of 30 cents per kWh, a night of eight hours at 80 W costs approximately 19 cents. Read more about the costs in the daily power consumption of a dehumidifier. Also view the dehumidifier collection. Do you sleep poorly or have respiratory complaints? A dehumidifier is not a treatment; discuss persistent complaints with your GP.
Frequently asked questions
Should I keep the door closed when the dehumidifier is on?
In a small room, the device works best with the door closed, because it only dries the air in that room. Do make sure to ventilate at other times of the day.
How often should I empty the tank?
Check the tank every morning. In humid conditions, a 3800 ml tank can fill up within a day. Read more about emptying and maintaining the water tank.
Will the air become too dry if I run the dehumidifier for too long?
It can. Turn it off or use the timer if the room feels dry enough. A good hygrometer helps to check this.
Can I leave the dehumidifier running when I am away?
The fire brigade advises switching off appliances or pulling the plug when you go away. Use the timer and preferably turn it off when you leave the house.
Does a dehumidifier replace opening a window?
No. A dehumidifier removes moisture from the air, but air renewal is still necessary. Milieu Centraal also states this.