A hygrometer helps you keep track of humidity, while a dehumidifier can provide extra support in one room, particularly when drying laundry. Neither replaces fresh air. If damp patches or mould persist, France Rénov’ recommends finding out what’s causing them before relying on an appliance.
Fogged-up windows, damp walls or mould call for a closer look at the property and an investigation into the cause. France Rénov’ recommends having damp patches assessed rather than assuming an appliance will be enough.
Your choice will depend on the room you dry laundry in, how well it’s ventilated and whether a dehumidifier could provide extra support. ADEME identifies air-drying laundry as a major source of indoor humidity.
In a bathroom, utility room or windowless room, check how the air is refreshed before considering a local solution. If you choose a dehumidifier, you’ll also need to think about where to put it, emptying it and keeping it clean.
Take measurements to see when and where humidity rises. Check the ventilation and look into any persistent damp patches before choosing an appliance for extra support.
Worth considering: if you want to compare different rooms or track changes after showering, cooking or drying laundry.
Limit: it measures relative humidity, but doesn’t remove water from the air or identify what’s causing marks on the walls.
Worth considering: as extra support in a room where activities regularly create moisture, without stopping the room from being aired or ventilated.
Things to consider: you’ll need to plan where to put it, how to empty or drain the water, and how to maintain it according to the instructions.
Best to prioritise: when condensation, odours or damp patches persist. France Rénov’ recommends finding out what’s causing the damp patches.
What to plan for: any ventilation checks or potential upgrades should be suited to your home. It’s not simply a matter of choosing a portable appliance.
| Priority | What to check | What I need |
|---|---|---|
| Cause of the damp | Note which rooms are affected and when humidity rises. If damp patches persist, have their cause investigated, as France Rénov’ recommends. An air reading alone can’t diagnose problems with the building. | I want to understand whether the problem occurs after a particular activity or whether the walls stay damp regardless. |
| Air circulation | Check the air inlets, extractor vents and existing ventilation. ADEME recommends keeping these openings clear and not switching off the VMC. | Condensation returns after showering, cooking or drying laundry, so I also need to check how damp air is being removed. |
| Suitability for the room | For a dehumidifier, compare the stated floor area or volume for the exact model, the conditions associated with its capacity in L/jour and the operating temperature given in the instructions. | I’m looking for extra support in a specific room, without assuming that a capacity figure guarantees the same results everywhere. |
| Everyday use | Check the stated noise level, tank capacity, whether it switches off when full, whether it can drain continuously and how easy it is to access the filter. Make sure your planned set-up follows the instructions. | If the appliance will be used regularly, emptying it, finding a place for it and maintaining it need to be manageable in my home. |
A hygrometer tracks the humidity in the air, while a dehumidifier removes moisture from the room it’s running in. Neither identifies the cause of a problem with the building. France Rénov’ recommends having damp patches assessed to find out what’s causing them.
If damp patches, odours or mould persist, get the problem checked while continuing to air and ventilate your home.
A stated capacity applies to a particular model and its operating conditions. It doesn’t tell you on its own whether the noise level, tank or drainage method will suit your room.
Compare the full model reference, the conditions for its stated capacity and the usage requirements in its instructions.
Among the activities it studied, ADEME identified air-drying laundry as the one that releases the most moisture into indoor air.
If you need to dry laundry indoors, choose a large, well-ventilated room or one with a VMC extractor vent. A dehumidifier can provide extra support, but it’s not a substitute.
A tank that needs emptying and a filter that needs cleaning require regular attention. Placement and safety instructions vary depending on the model.
Before buying, check that the filter is easy to access, whether there’s a full-tank alert, the drainage options and the instructions for the exact model.
These brands and models give you examples of features to compare on specific products. They may not be among the products featured below.
The range includes the Extrême Dry Compact+ DH5260F0 dehumidifier.
The brand offers a range of humidity monitors and dehumidifiers.
The Tasciugo AriaDry range includes several dehumidifier models.
This Joybuy selection includes a hygrometer for tracking indoor humidity and dehumidifiers designed to provide extra support in one room. Choosing one of these appliances doesn’t replace checking the ventilation or investigating the cause of persistent damp patches.
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Track changes in a room before deciding what to do. The product name indicates that it measures temperature and humidity, includes a comfort indicator and records daily minimum and maximum readings. It doesn’t remove moisture or diagnose the cause of persistent damp patches. Check the stated accuracy if you want to compare readings in detail.
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An option to consider for extra support if you can manage the water collected in the tank or through the drainage hose mentioned in the product name. It’s listed as having four modes, automatic defrost, a 24 h timer and R290 refrigerant. Stated capacity depends on the conditions of use, so also check the noise level and safety instructions for the exact model.
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For extra support in a room where a laundry-drying mode or Wi-Fi control would be useful. The product name lists three modes — Auto, Dry and Sleep — as well as R290 refrigerant. Check the noise level for this model before using it near a bedroom, as the available information is contradictory. Keep the room ventilated.
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Consider it for removing moisture from the air in a room, alongside proper ventilation. The product name mentions an LED display and R290 refrigerant. Check the recommended floor area or volume for the exact model before choosing it, as the available coverage information doesn’t match.
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The laundry-drying mode may suit households that regularly dry laundry indoors, in a room that’s also ventilated or fitted with an extractor. The product name lists a 24 h timer, automatic defrost and continuous drainage. Check the instructions for the recommended room and the requirements for connecting the drainage hose.
No. It removes water from the air in the room it’s running in, while ventilation refreshes the air. ADEME recommends leaving the VMC on and keeping air inlets and extractor vents clear.
Find out what’s causing them rather than relying on a dehumidifier alone. France Rénov’ recommends having damp patches assessed. Ventilation and elements of the building may also need to be checked.
If you need to dry laundry indoors, choose a large, well-ventilated room or one with a VMC extractor vent, as ADEME advises. A dehumidifier can complement this set-up, but it won’t replace the removal of damp air.
Check the recommended room size or volume for the exact model, the conditions behind its capacity in L/jour, the noise level, tank, water drainage and filter access. A stated capacity alone doesn’t tell you whether the appliance will suit your home.
Follow the instructions for your model when emptying the tank and cleaning the appliance. For the models covered by its FAQ, De’Longhi recommends vacuuming dust from the filter and, if it’s very dirty, rinsing it at a temperature no higher than 40 °C. Don’t use this method on another model without checking its instructions.