Where Should You Place A Dehumidifier?

We often get asked where a dehumidifier should be placed. It’s a good question, as choosing the right location can make a big difference to a dehumidifier’s efficiency and running costs.

The simple answer is that you should place the dehumidifier near the primary source of moisture or in the room most affected by dampness. You should also leave plenty of space for airflow around the machine, as this is essential for maintaining the dehumidifier’s effectiveness.

Let’s take a closer look at where to place a dehumidifier, why it matters, and whether there are any locations you should avoid.

Where Is The Best Place To Put A Dehumidifier?

Dehumidifiers are brilliant for reducing humidity in a damp room (or multiple rooms), but they cost money to run. With energy bills increasing all the time, it’s more important than ever to minimise your electricity usage.

With that in mind, it’s important to place your dehumidifier where it can reduce humidity as efficiently and quickly as possible.

Dehumidifiers work by pulling in damp air, removing moisture so that it drips into the tank, then releasing dryer air back into the room. This means maintaining maximal airflow is essential. It also means you want to place the dehumidifier where it’s going to have access to the damp air.

There’s no single rule for the best placement – it depends on your situation. Here are the five most important considerations:

  1. Place the dehumidifier close to the primary moisture source. Think about where the humidity in your home is likely to be coming from. Do you often have long showers? If so, the bathroom is likely to be a major source of moisture, so you should place the dehumidifier nearby (but not in the bathroom as dehumidifiers are not waterproof). Do you cook a lot of meals on the hob? In this case, the kitchen may be where a lot of the moisture is coming from. Other common sources include basements, drying laundry, and open windows. Alternatively, place the dehumidifier in the room with the worst condensation.
  2. Always allow enough space for plenty of airflow. Dehumidifiers need consistent airflow to function effectively. Most people don’t want their dehumidifier in full view, but it’s important that air can circulate around the machine. For this reason, avoid placing the dehumidifier against a wall, in a corner, tucked against furniture, or pushed up against curtains. Leave at least 30cm between an object and the dehumidifier, although some models require more (check the manual).
  3. Consider the size of the room. Most dehumidifiers can quickly reduce the humidity in a small room regardless of where they are placed. But for bigger rooms, a dehumidifier will be most effective in a central location. If you want to dehumidify multiple rooms, consider placing the machine in a hallway – and make sure you buy a model with a large extraction capacity.
  4. Consider the type of dehumidifier you have. Refrigerant dehumidifiers are the most common type in the UK, as they work best in warm environments. Desiccant dehumidifiers are less popular, but are better suited to cooler locations, such as unheated garages or conservatories. If you have a refrigerant dehumidifier, make sure you place it in a heated room to ensure it’s effective.
  5. Never place a dehumidifier in a bathroom (or anywhere else it could get wet). Dehumidifiers are not waterproof and shouldn’t be placed in bathrooms. Instead, place them in the adjacent hallway or a nearby room.

Tip: Another consideration is whether you want to use a continuous drainage hose. To use this function, the dehumidifier will need to be placed near a floor-level drain.

Can You Place A Dehumidifier Anywhere?

Having a dehumidifier anywhere in your home is better than nothing. Reducing the humidity in one room causes moisture to spread out from elsewhere in the house, which can lower the overall humidity. In fact, in smaller homes, a single dehumidifier placed in a hallway could eventually reduce the humidity in every room.

Just placing the dehumidifier in a random location isn’t the best way to reduce the humidity in your home though. Instead, it’s important to place the machine near the primary source of humidity, so it can extract moisture efficiently before it spreads to other parts of the home.

Once you’ve got the moisture under control in the worst room, you could consider moving the dehumidifier to a more central location in the house.

Frequently Asked Questions

Do Dehumidifiers Need To Be In The Middle Of The Room?

It’s true that dehumidifiers are most effective when they are placed in the centre of the room. A central location often provides maximum airflow and allows the dehumidifier to pull in moisture from the entire room.

With that said, leaving a dehumidifier in the middle of the room often isn’t practical. Aside from taking up a lot of space, most dehumidifiers aren’t designed to be decorative items!

A good compromise is to put the dehumidifier in a spot where it’s at least 30cm away from a wall, furniture, or any other object. It won’t be quite as effective as if it was in the centre of the room, but the machine will still have enough airflow to lower the humidity in the room.

Can You Sleep In A Room With A Dehumidifier?

There’s nothing dangerous about sleeping with a dehumidifier. In fact, bedroom windows are often affected by condensation, making this room a good choice to dehumidify. However, the noise produced by the dehumidifier may keep you up, so it’s important to look for a quiet model. Keep in mind that many dehumidifiers will switch on and off during the night, as they have a built-in humidistat to target a relative humidity level.

Can You Put A Dehumidifier In A Corner?

We don’t recommend placing a dehumidifier in a corner, as it won’t be able to function effectively. Being close to two walls reduces the amount of airflow around the machine and limits the amount of moisture it can pull from the air.


Dehumidifiers don’t need a perfect placement to reduce humidity, but you should still think about where the machine will be most effective. Ideally, the dehumidifier should be placed near the primary source of moisture. It’s also vital that there is enough space for air to flow all around the dehumidifier.

We hope this article has helped clarify where to place your dehumidifier. If you have any questions, you can use the comments form below to get in touch.

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