Air Purifier

Top & Best Air Purifier Review 2022 – How to Select Ultimate Buyer’s Guide

Air Purifier: How to choose the best in 2022

Today we are going to talk about the air purifier, an indispensable device for those who live in big cities, where the air quality is getting lower and lower.

The purifier renews the air in the environment, by removing agents harmful to respiratory health such as microorganisms (bacteria, viruses, mites), dust, mold, pollen, animal hair, bad smells and cigarette smoke.

In this article we will explain the functions of this device, the advantages and disadvantages, some tips on how to choose the ideal model, where to buy and even some buying suggestions. Good reading!

First, the most important

  • When buying an air purifier, observe the coverage area (ranges from 1 to 125 m²), filtration system, air exchange cycles and the extra resources available.
  • The air purifier works for cycles of air exchange, that is, the number of times that the ambient air is sucked into the device, sterilized and returned to the environment.
  • The device may come with some accessories such as base, bivolt power supply, cleaning brush, USB cable and carrying case (portable devices).

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The best air purifiers: Our favorites

Want to buy an air purifier, but don’t know which model is right for your needs? Check out a list of the best models available for purchase.

They are products for all budgets. In addition to facilitating the purchase, you will know the functions of each of these devices, including the advantages and disadvantages. Check out!

  • The best to prevent respiratory diseases
  • The ideal purifier for bedside table
  • The best with triple filtration system
  • The ideal office purifier

Buying Guide

The more cities grow, the more air quality falls, both outdoors and indoors. Poor air quality is harmful to health and can lead to several respiratory problems.

It is for these and other reasons that you should have an air purifier at home. With that in mind, we have prepared this Buying Guide with everything you need to know about the device.

What is an air purifier?

Also called an air sterilizer, the air purifying device is responsible for filtering and eliminating impurities, microorganisms and odors present in the environment, making it cleaner.

The device has a filter that retains microparticles and particles of the harmful agents mentioned in the previous paragraph. After passing through the filter, the air is returned to the environment up to 99% cleaner.

Impurities are trapped in the filter itself, which can be made of cotton, foam or other types of fibers. Some filters are washable, but should still be replaced with new ones periodically.

This device is ideal for those who have allergies, respiratory diseases and those who wish to have more quality of life, well-being and the tranquility of being breathing cleaner air.

What are the benefits of the air purifier?

If you are in doubt as to whether it is worth having an air purifier at home, we already say yes. If the use of the device is recurrent, you will notice noticeable improvements in your respiratory health. The air purifier helps to eliminate viruses, bacteria, dust, mites, animal hair and even pollen.The clean air purifier device eliminates impurities that cause allergies of all types and are even more harmful for people with rhinitis, sinusitis, asthma and bronchitis. The air purifier helps to eliminate viruses, bacteria, dust, mites, animal hair and even pollen.

If there are smokers at home, the air purifier will also be advantageous, as the device absorbs smoke, reducing the smell of cigarettes in closed rooms.

The air purifier also prevents mold from forming on furniture and walls, as well as eliminating odor.

For maximum effectiveness, the use of the air purifier must be associated with some habits such as frequent cleaning and opening doors and windows for air circulation in the environment.

What are the disadvantages of the air purifier?

Although they are not as expressive, the air purifier has some disadvantages and you need to know them:

  • Not all devices deliver what they promise, especially when it comes to removing bad odors and cigarette smoke;
  • Even premium models are made of materials that are not very resistant, so you have to be careful with the fragility of these devices;
  • Almost all models have a filter, which must undergo frequent maintenance. This is a recurring expense and needs to be on the tip of the pencil when you purchase an air purifier.

What care should I take with the air purifier?

The air purifier must receive proper care for it to function properly.

Be sure to change the device filter at the frequency recommended by the manufacturer in the device’s instruction manual. Each type of filter has a different exchange rate.

Are air purifiers and humidifiers the same thing?

Many people get confused, but air purifiers and humidifiers are different devices. Both reduce symptoms associated with poor air quality, but operate in different ways.

Air Purifier

The air purifier is responsible for reducing or eliminating the concentration of contaminating elements in the air such as bacteria, viruses, mites, dust, mold, pollen, animal hair and cigarette smoke.

Although it reduces or eliminates the agents that cause respiratory diseases in the environment, this device does not release moisture into the air.

The air purifier can be developed with different technologies: HEPA, UV, activated carbon, ionizer and ozone (we will detail each type in the last section of this article).

Air humidifier

The air humidifier, as the name implies, releases moisture, relieving symptoms associated with the problem such as dry or dry throat, nose, lips and skin.

Although it has several benefits, the air humidifier should not be used in excess, as it can lead to the proliferation of microorganisms inside the home such as dust mites.

There are two types of air humidifiers: ultrasonic and impeller. The ultrasonic humidifier uses ultrasonic waves to create the cold mist, while the propellant uses a rotating disk for this function.

How much does an air purifier cost?

Price is an important issue to be considered before purchasing an air purifier. Some models cost around R $ 300, but do not lose anything for more expensive devices, which exceed R $ 500.

Where to buy an air purifier?

The air purifier can be purchased at furniture and appliance stores. If you prefer, you can buy online, on sites like Amazon.


Purchasing criteria: Factors to compare air purifier models

With so many different models and brands to choose from, deciding which is the best model of air purifier for your home and / or office can be a complicated task.

With that in mind, we have prepared a guide with the criteria that must be analyzed at the time of purchase. Check out what you need to know to choose the best air purifier below:

  • Filter
  • Size
  • Air exchange
  • Extra features

We will explain item by item throughout this section.


The filter is the most important part in an air purifier, as it retains microorganisms, dust particles, mold, pollen, animal hair, bad smell and cigarette smoke.

There are five types of filters: HEPA, UV, activated carbon, ionizer and ozone. The most effective of all is the HEPA filter, the acronym stands for “high efficiency particulate air filter”, translated from English, which retains any type of impurity.

The second type uses technology based on ultraviolet radiation (UV), which has the ability to destroy bacteria, germs and viruses present in the air (although it does not eliminate other agents).

The activated carbon filter is an adsorbent agent (the spelling is right) that retains particles present in the air due to the porosity of this material. These agents are trapped in the filter structure.

The ionizing filter releases positive and negative ions, just as it does in nature. This union is able to purify the air. The ozone-generating filter alters the molecular structure of the components present in the air. The device transforms oxygen into ozone, which deodorizes and disinfects the air.

However, this latter model is not ideal, as ozone is a gas that is harmful to humans and animals and can cause asthma symptoms and even form scars on the lungs.


When choosing an air purifier, evaluate the size of the room you intend to place the appliance on. The purifier is only effective when there is a ratio between the size of the room and the area covered by the equipment.

You will find smaller models, designed to clean the air in a certain room, and larger appliances designed to clean an entire house. These air purifiers can be portable or fixed.

Air exchange

The air is drawn into the device, passes through the filter and is returned to the clean environment. This process is called “air exchange”. One cycle is followed by the other and occurs several times an hour.

The number of air changes is determined by the cubic foot (volume) of an environment and the cubic output per minute of the device. The more air changes per hour, the better the air quality in the environment.

When buying an air purifier, analyze the amount of air changes that each model provides (you can find this information in the technical specifications of the product). Ideally, four to six air changes per hour are carried out.


Extra features

The air purifier can come with some extra functions, which can make all the difference in your experience with the device. Check out a list of the main features you can find in the air purifier:

  • Quiet operation
  • Energy efficiency
  • Remote control operation
  • Multiple speeds
  • Quick refill change
  • Programmable timer
  • Automatic shutdown

Evaluate the resources available on the technical sheet of the equipment you are considering purchasing and choose the one that best matches your needs and preferences.


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