Informational Guide

Where To Put Humidifiers?

Since there’s no exact rule on where to place a humidifier, figuring out the perfect spot can be a challenge. Proper placement depends on many things.

by Josh M

Investing in a humidifier can not only help to keep the moisture levels in your home comfortable, but it can also improve your overall health.

By increasing moisture levels, humidifiers have the potential to alleviate dry skin, help with sinus issues and allergies, and even reduce the risk of getting sick in the future.

To get all these benefits and more from your humidifier, you first need to find the ideal placement.

Since there’s no “Golden Rule” on where to place a humidifier, figuring out the perfect spot can be tricky. Proper placement depends on many things, like the type of humidifier, the size and shape of the room, and the direction of airflow.

If you’re looking for answers on the best place to put a humidifier in a room, check out this complete guide on where to place humidifiers for optimal results.

As we said before, there’s no single rule when it comes to the best place to put a humidifier. Many different factors can affect how a home humidifier operates, and these factors also determine how the humidifier should be positioned in a room.

Humidifier on Table

Specifically, there are 4 considerations to keep in mind when deciding where to place a humidifier in the home:

Humidifier Type

The first step in choosing a humidifier location is to consider the type of humidifier you’re working with. Warm mist humidifiers are different from cool mist humidifiers, and evaporative humidifiers are different from ultrasonic humidifiers.

For example, an ultrasonic humidifier performs better if it’s raised off the ground (like on a table), while it’s perfectly fine to keep an evaporative humidifier on the floor.

Room Size, Height & Configuration

Considering the square footage of the space you’re hoping to humidify is the next big thing to think about. With a large room with high ceilings, it’s best to place the humidifier in a central location, but in a smaller space, the humidifier can still perform well even if it’s off to the side.

Air Flow

All humidifiers require airflow to do the job right, so consider the direction of airflow as well as any airflow restrictions. It’s also best to keep a humidifier away from windows, vents, and doors since these can cause inaccurate humidity readings.

Amount & Vicinity of Objects

Humidifiers are designed to add moisture back into the air, which requires a full tank of water to do that. The best humidifiers are designed to be completely leakproof.

However, you’ll still want to protect your possessions from water damage by keeping the humidifier distanced from other objects in the room.

Where to Put a Humidifier (Various Rooms Explained)

Now you know the general considerations when deciding on the best place for a humidifier in the house. It’s also a good idea to consider the specific intention you have for using the humidifier, like whether it’s to alleviate dry winter conditions or meant to reduce asthma symptoms.

The next big thing to factor in is the specific room, like whether you plan to use the device in a bedroom, office, or baby’s room. Here are some helpful placement tips based on various rooms in the home:


The ideal placement for a humidifier in a bedroom is wherever the moisture is lowest in the room. You can find this out by using a hygrometer (it’s possible to find one for about $10) and testing the humidity in different parts of the room.

Once you’ve figured out the lowest humidity point, keep in mind those considerations from before, like room size, airflow, etc.

Living Room

Living rooms are generally large spaces, so try to find a central place in the room so that the humidifier can reach as much of the space as possible. Try to avoid windows, radiators, and vents, as well as areas with object obstructions or poor airflow.


Most offices have lots of wooden furniture that can be damaged by water leaks, spills, or too much moisture in the air. However, a humidifier can also protect all that wood and help your floors and furniture last longer, so it’s definitely a great addition to any home office.

Just make sure to place the humidifier far enough from furniture to prevent water-related damage.


Since bathrooms are prone to high moisture levels, it’s not often that you’d need to invest in a humidifier for a bathroom, and it’s much more common to need a bathroom dehumidifier instead.

But if you do want to raise the humidity in the bathroom for whatever reason, try to find a small humidifier that can easily sit on the bathroom counter.


The main thing to consider when using the best humidifiers for babies is your child. Make sure to choose a place that eliminates any risk or danger for your little one. Place the humidifier far away from the crib and away from any electrical hazards.

Keep the door to the nursery ajar when the humidifier is on to avoid creating an environment that is too damp for infants.

Humidifer in Baby Room / Nursery

Where Should You NOT Put a Humidifier: Places to Avoid

When you compare an air purifier vs. dehumidifier vs. humidifier, there are some big similarities when it comes to proper placement. With each of these devices, you should think about things like airflow, room size, and possible obstructions.

You should also be thinking about where not to put these devices, especially for a humidifier, since moisture is involved. Here are some areas to avoid when putting your humidifier in place:

  1. .Near other home appliances
    Water never goes well with home appliances like TVs, desktops, and microwaves. Too much water in the air or water leaks caused by the humidifier can ruin these valuables, so it’s best to keep a humidifier far away from home appliances and technology.
  2. .By a window
    Windows can create a false humidity reading, causing the humidifier to perform inaccurately. The goal here is to alter the indoor humidity levels, and areas near a window often mimic the outdoor humidity.
  3. .Near electrical outlets
    Although the humidifier will need to be plugged into an outlet in order to work, try to move the machine as far from electrical outlets as possible. If your humidifier has a short cord, consider using an extension cord.
  4. .On carpets and wooden furniture
    If water starts leaking from the humidifier on carpet or wooden furniture, you run the risk of ruining that surface of your home. Plus, using a humidifier on carpeted floors increases the chance of mold growth.

How Close Can a Humidifier Be to Your Bed?

This is one of the most-asked questions regarding humidifier placement. Many people invest in a humidifier to help improve sleep after suffering from issues like sinus problems, coughs, and colds, so it’s often assumed that the closer to the bed, the better.

Humidifer in Bedroom

However, a humidifier should not be used within 3 feet of a bed. Putting it too close to the furniture and bedding can cause damage, plus the humidifier won’t be able to perform to its fullest potential with a large bed restricting airflow.

For those reasons, it’s best to put the humidifier at least 3 feet from the bed. If you’re using an ultrasonic humidifier, the ideal placement will be raised 2 feet off the floor.

Common Mistakes When Using Humidifiers

As you probably know by now, there are right and wrong ways to use a humidifier (especially in terms of placement). Unfortunately, a lot of homeowners are still misusing these devices, and there are some common mistakes constantly being made:

  1. .Allowing the humidity level to rise too high
    When the humidity in the home gets too high, you run the risk of mold growth, furniture damage, and even worsening symptoms of allergies or asthma. If you’re prone to allergies from mold, mildew, or dust mites, it’s imperative that humidity levels don’t reach above 40%.
  2. .Letting water sit in the unit
    Letting water sit in the humidifier’s tank for too long can cause bacteria to grow inside the machine. That bacteria will then be released back into the air, which is obviously not good for your health.
  3. .Using tap water in a humidifier
    It’s best to use distilled, demineralized, or purified water when filling a humidifier’s water tank. Tap water contains lots of minerals that can create “white dust” in the water tank and eventually promote bacteria growth.
  4. .Not cleaning the humidifier often enough
    Humidifiers require regular cleaning, and failing to clean your unit can cause mold, mildew, and bacteria to grow. Every unit has a different process for cleaning, so check your user manual to learn how.
  5. .Ignoring humidity level at home
    Many homeowners are completely oblivious to their homes’ humidity levels. Neglecting indoor moisture levels can lead to mold growth, allergies, and it can even trigger asthma symptoms.

    The EPA says that “indoor relative humidity (RH) should be kept below 60 percent – ideally between 30 percent and 50 percent, if possible.”

People Also Ask (FAQ)

Should I put my humidifier upstairs or downstairs in a 2 story house?

In most cases, the humidity upstairs is higher than the humidity downstairs, so it’s best to keep the humidifier on the ground floor. However, there are exceptions to this, so check the humidity levels both upstairs and downstairs before making your decision.

How close does my humidifier need to be to my plants?

Using a humidifier is a great way to keep indoor plants happy and healthy. The best humidifiers for plants should be placed about 4 to 6 feet away so that your plants have enough space to breathe but can also absorb the humidifier moisture output.

Where is the best place to put my Dyson humidifier?

Dyson humidifiers are extremely effective for giving home humidity levels a boost. When figuring out where to place a Dyson humidifier, just keep all the tips mentioned in this guide in mind.

Does a cool-mist humidifier make the room colder?

A cool-mist humidifier can make the air feel fresher and slightly cooler, but it won’t drastically lower the temperature of the space.

Is it good to sleep with a humidifier?

Yes, there are a lot of benefits that come along with sleeping in a room with a humidifier. It’s especially useful for alleviating flu or cold symptoms at night.


If you want the best possible results from your new humidifier, the placement does matter. The main things to keep in mind are room size, humidifier type, and airflow. Then you can think about things like the type of room (nursery vs. office vs. bedroom) and your goals for raising your home’s moisture levels (allergies vs. asthma vs. dry skin).

Last Updated on December 20, 2022

Josh M

My name is Josh and I am obsessed with the HVAC industry. I created this website to help HVAC techs of all levels get the best out of their heating & cooling systems. I have spent thousands of hours studying air conditioners, heaters and home air products so you can learn & buy with confidence. Learn more about the team here.