Where to Place Dehumidifier?


As a result of the high humidity common in frigid climates around the world, dehumidifiers are required to lower indoor moisture levels. Is the dehumidifier best placed downstairs or upstairs, i.e., on the first or second level of a two-story house?

Like a vacuum cleaner, a dehumidifier is an electric device that removes moisture from the air. To do its job, it draws moisture from the air, reducing and maintaining humidity levels. To prevent the growth of mold, it is important to maintain a stable level of room humidity in the atmosphere and know where to place dehumidifier.

where to place dehumidifier


Apartments typically have a relative humidity of 35 to 50 percent. A humidifier or a dehumidifier may be necessary if the humidity level drops below or rises over this level, respectively. Cracks or bulging in wall paint, mildew stains on the ceiling or wall corners, and even decaying furniture are all signs of greater relative humidity.

The relative humidity isn’t spread uniformly across a two-story building for a variety of reasons, including temperature, height, and floor area.

Excess Humidity levels

Humidity levels in the upper floors are often higher than those lower down. A better way to express this is to say that the second level might be up to 950 square feet and larger than the downstairs. The basement is the lone exception to this rule. The first level and basement are visible in the diagram below.

You can tell from the photo above that I’m heating the basement with a wood stove. For some reason, the upstairs humidity rises to 45–50% when I use the wood burner downstairs, but only reduces to 35 percent when I use it upstairs. This is owing to the temperature difference between the upper and lower floors, i.e., the upper floor is 20-21°C and the lower floor is 25-27°C.

When the stove is not in use, the humidity in the lower level of the whole house dehumidifier rises to 45-50 percent, while the humidity in the upper level rises to 50-55 percent. First-level temperatures have plummeted to around 18-19 degrees Celsius, while those on the second story have dipped to around 17-18 degrees Celsius.

To make a long tale short, your activities, which raise the temperature of your home, affect the humidity level in a two-story building. Apart from that, the following sections go through several different elements.

where to place dehumidifier


Depending on the circumstances, dehumidifiers can be installed on the ground floor or as high as the first or second story.

In terms of temperature, either the dehumidifier should be located upstairs or downstairs on the lowest floor of the home (i.e. the coldest floor).

  • Place the dehumidifier in a location where the air is most saturated with excessive moisture, such as a floor or room. You should set the dehumidifier on the lower floor of your home if there are a lot of moisture-filled rooms like the kitchen, laundry room, and bathrooms.
  • The dehumidifier should be located in an area where it can draw air and expel the hot, dry air readily, and where there are no obstructions that could impede proper air movement.
  • To avoid electrocution, the dehumidifier should be located in an area where electricity can be easily reached, but not too close to the power source.
  • Placement near dust sources, lint, and air particles might harm the dehumidifier’s filter in a short amount of time if the dehumidifier is not far enough away.
  • Finally, it’s up to you: Yes, the dehumidifier’s location can be entirely determined by your personal preferences.


If you have a dehumidifier installed, what are some of the most common questions you are asked about it?


There are many variables to consider, including the humidity level of your second floor (upstairs). Dehumidifiers should only be used on the first and second floors of a house, not in the basement or crawlspace.

where to place dehumidifier


Near the outlet, this should be positioned. The discharge point must be in a well-ventilated region apart from any standing water. Clear sealing the basement to keep wet air from leaking in is essential if you want the dehumidifier to do its job effectively. Learn more about basement dehumidifiers here.

Setting a dehumidifier to the following settings is recommended.

A dehumidifier set at 30-50 percent in warm weather and 30-40 percent in cold weather is ideal for human comfort.


To summarize, the optimal location for a dehumidifier is either the basement or an area near the stairwell on the first or second floor. It’s because your basement is the most humid area of your home. Dehumidifiers should not be used if there is any other dampness on the upper floors.

How to install your dehumidifier in the best possible location

If you’re looking for the optimum location for your dehumidifier, there are three things you should keep in mind:

1. Humidity source

Place your portable dehumidifier as close as possible to the source of moisture.

What is the source of the humidity? Internal sources such as a shower or oven may be the source of the noise.

 place dehumidifier

How do you know whether it’s coming from the outside?

Your dehumidifier will be more effective if it is placed close to the source of moisture. Dehumidifiers remove moisture from the air before it may spread to other parts of your home.

2. The room’s capacity.

Your dehumidifier placement also depends on the size of the space.

Your dehumidification needs are based on the size of the room. Whether you’re in a living room or the basement, you’ll need a lot of room. Are you referring to a small room, like a bathroom?

Large rooms require a dehumidifier to be centrally located to provide adequate drying coverage.

Since there is a smaller surface area to cover in a small room, proper placement is less of an issue.

3. Airflow obstructions

Is there anything in the immediate vicinity that could obstruct the dehumidifier’s ability to circulate air?

The airflow through a dehumidifier must be unobstructed by neighboring objects for it to work correctly.

As a result, placing your dehumidifier too close to a piece of furniture, a wall, or other objects is not recommended. The dehumidifier’s performance will suffer if its airflow is obstructed.

How much space do you have to dehumidify?

Dehumidifiers work best in areas with high levels of moisture. Bathrooms, basements, kitchens, and crawlspaces are just a few of the places in the home where moisture problems can arise.

A hygrometer, for example, can provide you with an accurate reading of the humidity levels in your home if you don’t already have one.

It’s critical to pinpoint the source of excess humidity in your home after you’ve found it. Do not let the humidity seep into adjacent areas, as this could result in further harm.

The room with high humidity should have all doors closed. You intend to use a dehumidifier to eliminate the humidity from that one room.

Close any windows as well, as you don’t want any additional humidity from the outside seeping into your home.

Placement of dehumidifiers in bathrooms(bathroom dehumidifier)

The humidity in your bathroom will soon rise if you take long, steamy showers. Small water droplets float in the air when you take a hot shower, and you’ve probably noticed this before.


Condensation happens when moist air comes into contact with chilly surfaces in your bathroom.

  • Mold and mildew thrive in bathrooms because of the constant condensation. Furthermore, condensation damages paint and wood.
  • Place a dehumidifier in your bathroom if you have ever observed mold, mildew, or moisture in your bathroom.
  • The ideal time to run the dehumidifier is immediately following a shower or bath. Shortly after taking a shower, turn on the dehumidifier and let it run for around 20 minutes.
  • Dehumidifier placement in a tiny room like a bathroom is usually challenging. On the floor, there is not much room for a dehumidifier.

However, thanks to the bathroom’s diminutive size, a dehumidifier is also an option. Small dehumidifiers are available for purchase.

Crawl space dehumidifier installation

Crawl spaces, which are often overlooked, can be the most humid places in your home.

When the outside temperature is higher than the inside temperature, humidity levels in a crawl space are likely to rise.

Your crawl space will be filled with condensation as the warm, damp air enters the space. As a result, humidity levels rise because cold air is unable to store as much moisture as warm air.

Even more worrisome, crawl space humidity levels can be exacerbated by leaky pipes or poor insulation.

Crawl space dehumidifiers tend to be smaller than other types of dehumidifiers because of the limited space.

Where to place dehumidifiers

Best Crawl Space Excess Moisture Remover Dehumidifier

It is critical to place a dehumidifier in a crawl area in a central location with sufficient clearance. The dehumidifier should have access to as much space as feasible to exchange air.

The size of your crawl space may need the usage of an air fan to circulate the crawl space air. Dehumidification can be improved by circulating the air in small spaces.

If your dehumidifier is unable to drain constantly, you will have to empty the tank regularly. So, if you’re collecting water in the dehumidifier’s tank, make sure it’s easy to get to.

Placement of a dehumidifier for kitchens

When it comes to humidity in a home, kitchens are a continual source. Other sources of undesired humidity, such as dishwashers, refrigerators, and cooking, can also be found in the kitchen sink.

Dehumidifying your kitchen begins with locating the source of excess moisture so that you may address it directly with a dehumidifier.


For example, if the kitchen sink is the source of the humidity, then a small dehumidifier should be placed next to the sink. Dehumidifiers near the stove can help keep the air in your kitchen dry if it gets too humid while you’re cooking.

Regardless of where you place the dehumidifier, try to keep the air moving. As a result, you should avoid placing it in a corner or a small area.

Basements should have dehumidifiers installed.

It’s not unusual for basements to be filled with high levels of dampness. Water can leak through the walls of basements since they are located below ground level.

Ventilation is also a problem in many basements. Basements are a common location for moisture-containing appliances like washers and water heaters. When moist air is not allowed to vent to the outside, humidity can quickly build up.

For most individuals, a dehumidifier is a great way to keep their basements dry. Because basements are typically tiny, enclosed places, humidity control is usually not a problem.

Placement of dehumidifiers in living areas

The placement of a dehumidifier in a living room might be problematic.

A dehumidifier should be placed near the center of the living room because it is the largest room in the house. Because of this, having a large dehumidifier in the middle of the living room takes up a lot of important floor space.

Where to place dehumidifier

Dehumidifier placement in bathrooms

Hot showers can easily increase the humidity in bathroom. When cold or dry air enters your bathroom condensation forms. Condensation provides perfect habitat to mold and mildew to grow in bathrooms. Ultra Quiet operation and compact design make this dehumidifier incredibly convenient for bathroom. A run of 30 seconds on the dehumidifier at the shower is normally good to remove much of the moisture from the air. Some tiny, low-tech humidifiers are small enough just to fit under a shelf or in a toilet bowl. Ultra quiet operation makes a smart move for combatting high humidity in a compact room.

Dehumidifier placement in kitchens

Use of a dehumidifier to cool your kitchen area is about discovering what causes this humid state. For example, positioning a small dehumidifier above the sink is optimal. Other sources like dishwashers, refrigerators and cooking may also bring in excess humidity. Remember maintaining air flow is important so keep it away from a corner or confined space. No matter where you store the dehumidifier, remember that maintaining moisture air is of great importance for cooking air dry. For example using a small, low-tech gadget nearby the burner will help maintain a dry airflow at home.


Your dehumidifier should be placed close to a source of humidity if you are using it in your living room.

The front door is a common source of dampness in the living room. Moisture-laden air from the outdoors seeps into your home through cracks and crevices. If this is the case, the dehumidifier will work best if it is placed near the front door.

A dehumidifier should be large enough to perform properly in your living room. Your bathroom’s little dehumidifier may not be powerful enough to remove all of the moisture from your full living room. A large room or living space with adequate ventilation is great.