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Air Purifier vs. Dehumidifier – Pros vs Cons: What Should You Choose?

Modernization brings many options for a better life. As air is significant to our health, people used various ways to improve it. This time, put on the scale the Air Purifier and Dehumidifier.

Air Purifier vs. Dehumidifier

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Air Purifier vs. Dehumidifier

Issues regarding air pollution are getting worse recently. Dirt or unreasonable humidity can affect the air quality inside your house. Of course, your health, especially the respiratory system, also cannot be better as a consequence.

Many people often run air purifiers or dehumidifiers to improving the problem. However, it is not that both of these devices will work well in any room space. So, how can you choose the most suitable one? Let’s learn more in the comparison of air purifier vs. dehumidifier – pros vs. cons below.

Basic Functions of Air Purifier vs. Dehumidifier

What are the differences between air purifier vs. dehumidifier? Some people think that they do the same function. But the fact goes the opposite. We will show you the reason why.

Air Purifier

In your home air, there is a wide range of airborne contaminants that cause the harmfulness. They are particles like dust, allergens, as well as mold spores.

Air Purifier

An air purifier features a series of internal filters. The home air will go through a circulation with this filter system. Such a process can remove a lot of contaminants that we mention above.

There are two common types of filter you need to pay attention to.

HEPA Filter

If your air purifier comes with a HEPA filter, it will show a fantastic. The part can trap and lock up around 99% of airborne contaminants. Moreover, the size of these contaminants goes down to 0.3 microns.

Activated Carbon Filter

It does a function of removing all damp and musty smells in your room. This discomfort is often the result of mold and mildew.

You need to remember that an air purifier cannot reduce or control the level of moisture. It only does a recirculation with the home air. Then, all pollutants will disappear.


While removing airborne contaminants is the strength of an air purifier, reducing the excess humidity is the dehumidifier’s one.


The reasonable level of humidity in your house should be below 50%. If you would like to maintain this range, the device sucks moisture out of the air, and then collects the moisture into a bucket.

Filtering the home air is not the function of the dehumidifier. It brings more comfort when the humidity goes down and reduce the damp feeling as well as musty smell.

The high moisture is also desirable for dust mites. You can chase these pests away by lowering the humidity. A decrease in the humidity level means that they do not get enough moisture to grow and thrive.

Another point is that the low humidity makes you feel more relaxed. The higher the moisture presents in the home air, the hotter you will feel.

Air Purifier vs. Dehumidifier – Pros vs. Cons, Which One to Choose?

We mention a comparison of air purifier vs. dehumidifier – pros vs. cons in the first part of the article. Now, the chart below will give a glance at the two.

CriteriaAir purifierDehumidifier
FunctionRemoving airborne contaminants with a system of air filtersLowering the room humidity levels in the home air
BenefitsHelping asthmatics and allergy sufferersHelping allergy sufferers and reducing damp odors
RemovesAllergens, dust, and bacteriaMold and dust mites

Choosing an air purifier or a dehumidifier depends on some elements. Each of them is suitable for your demands in different cases.

You should use an air purifier when:

  • Health conditions like allergies, asthma, or other respiratory issues trouble you. And the cleanest air is in need.
  • You need to reduce allergens or pet dander away from your home.
  • You need to reduce dust and make your living environment healthier.
  • You need to remove odors caused by mold, pets, smoke.

You should use a dehumidifier when:

  • The room has a musty smell.
  • The spread of dust mites in the room irritates you.
  • An excess humidity level can aggravate your respiratory condition.
  • Running the air conditioner is not your liking in a humid area.


Do you have the final decision after learning about the comparison of air purifier vs. dehumidifier – pros vs. cons?

Each of the two has its benefits. The air purifier helps you reduce the airborne contaminants. The dehumidifier shows an excellent performance in lowering the moisture to make reasonable humidity.

For us, the air purifier is more necessary. It is because we see the air pollution gets worse day by day. We need to keep the home air clean before having a comfortable space. Do you have the same opinion? Don’t forget to let us know.

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