Air purifiers And Humidifiers – A Detailed Comparison in functionality and Price

Several devices have been introduced into the market to enhance the quality of air within your house, for example, Air purifiers And humidifiers. A usual individual could quickly identify that air purifiers are such devices that can purify the air. On the other hand, air humidifiers can humidify the air just as their names suggested.

Still, we need to know how a humidifier and an air purifier differ precisely. The point to think is should you buy an air purifier or a humidifier?

Depending upon the conditions, you may need both. So what are the dissimilarities between these two devices? Our article will explain some of the main differences between an air purifier and a Humidifier.

Overview of the Differences

ParametersAir PurifierHumidifier
FunctionsRemove pollutants from the air by trapping them in the filter and releasing fresh air.Increase humidity level by adding moisture in the air
WorkingThey have a single or several filters to trap air pollutants, such as HEPA, UV-C, ionizers, activated carbon, etc.
Their inner workings are more complex
They increase moisture through various techniques, like evaporation, ultrasonic waves, hot mist, etc. Their inner workings are less complex.
For whom it’s the best choiceIts best for asthmatic, allergic people, and kids older than a yearIt’s best for newborn babies and persons having dry skin issues and for persons suffering from congestion.
In which season should it be used?They can be used throughout the year, but in the allergic season, they are most prefer to useMostly prefer only during the dry season.
Negative PointsTheir electronic type often releases some chemicals in the air, making it contaminated.Liquefy-steam humidifiers frequently moisten the surfaces.
PriceCostlyCheap but operative expenses are much more significant for some types like warm mist humidifiers.
Comparison Table for Air purifier And Humidifier

Why you Need Such Devices?

One could be thinking that why there is a need for such devices? Why do we need to improve the quality of air? Did the water you drink is contaminated and full of dirt and germs?

Of course, not; there are water filter devices at every house now. It is considered to be the standard device of regular use. Even you didn’t drink every second. Then why didn’t you bother to inhale the air every second that is full of dirt, polluted, and full of germs?

According to EPA, i.e., Environmental Protection Agency, the inside air can be 2 to 5 times more contaminated than outside air.

What happens if the Air is unhealthy?

If the air in which you breathe is unhealthy, then it can affect your health as well. You can have a health issue that varies from minor issues like:

  • Dry skin leading to skin rashes
  • Dry hair leading to dandruff
  • Eyes, nose, or throat irritation leading to cold, cough, and sore throat all the time
  • Dizziness and tiredness

It can also cause serious health issues like:

  • Asthma and another respiratory problem, if you are already suffering from it, can be worsening. 

All such health issues arise due to poor air quality, so we can improve our health by simply using an air purifier or Humidifier. The common thing in both is that they both enhance the quality of air inside your house.

Let’s discuss the functioning of both devices. In this way, we will also be able to point out their differences.

Air Purifier

As its name suggested, the primary function of the air purifier is to purify the air by catching and removing a variety of pollutants present in the air. It works to eliminate dust and filthy impurities from the air.

It mainly consists of two elements:

  • A Fan that pulls the unclean air in and ejects the clean and fresh air.
  • A Single filter or series of filters trap or/and finish pollutants present in the air, such as pollen, odors, smoke, dust, mold, fungus, dander of pets, and definite viruses and bacteria.

Types of Airpurifier:

There are different types of air purifiers, such as mechanical and electronic

Mechanical Air Purifier:

They are further of two types.

Fibrous: such as HEPA, i.e., High-efficiency particulate air, these only traps impurities.

Adsorption: removes filthy odor from the air.

Electronic air purifiers:

Such purifiers release many chemicals and ozone into the environment, such as:

  • Ionizer purifier releases charged ions
  • ESP releases by-products
  • PCO releases ozone
  • UV-C kills germs, didn’t remove them from the air

HEPA filter air purifiers:

The air purifiers with HEPA filters are most commonly used to catch small particles of size 0.3 microns, and they are 99.97 % efficient.

Such purifiers are mechanical fibrous type, safe to use indoors because they don’t release any toxins or ozone into the surroundings compared to electronic purifiers, which remove many chemicals and ozone into the environment.


As the name suggests, Humidifier enhances humidity moisture within the air by pushing a controlled volume of water vapor within your surroundings.

There are two types of humidifiers:

  • Cool-operating 
  • Warm-operating

 A humidifier transforms water into warm or cool steam before ejecting it into the environment.

Warm-operating type:

It increases the temperature of water to produce mists that then moves into your environment.

Cool-operating type:

It causes the breakdown of water molecules into droplets with the help of vibrations or movement.

In the wintertime, the humidity level in the air decreases to 10 to 20 percent, and we want to increase it to a comfortable level of 30 to 60 percent. EPA states that Humidifiers are frequently used indoor to get rid of the health issues of dry throat, lips, nose, and skin. The most commonly used Humidifier is of three types: Steam-based, evaporative, and ultrasonic.


It functions by utilizing a heating section and create warm observable steam by boiling the water.


It utilizes a propelling fan and a wicking filter and to generate unseen cool wetness.

Ultrasonic type:

It creates steam from water by producing ultrasonic waves through a device transducer. The fluctuating ultrasonic waves create thick cool steam by breaking the water molecules.

Working Mechanism and Indoor Humidity Level:

The humidity level within the house should typically be 30 to 60 %. A level less than 30% is not healthy for humans. Also, too much humidity in the air can boost the growth of fungus, mold, and the evolution of dust bugs.

The humidifiers available in the market mainly consist of humidistat to regulate the preferred relative humidity.

Now we know about both air purifiers and humidifiers, so which one you should choose, which one is best for you, should you use both? We will discuss some points that will help you to understand which one is useful for whom.

So Which one you should buy out of Air purifiers And Humidifiers?

So now you know the basic functionality of both. Here we are going to give 3 scenes for you so you can see which device fits for you.

For The Asthmatic Persons:

As asthmatic persons are susceptible to any contamination in their environment, both devices are helpful for a person who has asthma. Still, air purifiers are a healthy choice as they eliminate the allergic substance present in the air. Humidifiers have no control over the level of allergens, but they create a pleasant indoor atmosphere to breathe. 

Note that they could even enhance the risk of asthma and allergies. When a humidifier is not cleaned accurately, it can grow mold and essentially contaminate the air with mold spores, activating allergy and asthma signs.

For Kids:

A humidifier could be the better choice for newborn babies as the infant skin is more delicate and can get itchy and scratchy easily if the air is drier. Hence, the Humidifier reduces the air’s dryness level and keeps it moist to the desired level.

And for kids older than a year air purifier could be the best option.

For Allergic People:

For people suffering from permanent allergy issues or seasonal allergies, an air purifier is the best choice. They trap all the dust particles and other toxins within them and release a clear and pure air free of contamination. They reduce the allergen level in the air.

Although humidifiers may comfort a dry nose or other allergies, they worsen the allergies because greater humidity increases the survival chances of dust bugs.

Can we use Air purifiers And Humidifiers both at same time?

Because both devices function entirely differently (eliminating contaminants from the air instead of increasing moisture in the air), they can be used in the same area.

But, it would help if you did not place them too close to each other as the wetness from the Humidifier could block filters or decrease the cleaner’s efficiency.

This problem can be prevented by keeping them on opposite sides of the room.


Now you know that both an air purifier and Humidifier can be helpful for your healthiness and home.

And in most cases, people choose to have both Air purifiers And Humidifiers devices in their homes to get the relief and comfort they want.

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