How to choose an air purifier: 5 things to look for and 1 to avoid

When choosing a perfect air purifier for your home, there are many factors and specifications. Factors like what kinds of pollutants it eliminates, whether it is friendly to our health, works well with seasonal allergies, and more.

First things first, you should look at the cost of air purifiers. The higher the cost, the more features it will have and the more reliable it is. Expansive air purifiers cover bugger areas, need less maintenance with filter replacement, and work well with a wide range of pollutants. Air quality directly affects your health, especially for people with respiratory problems, so always have information about the specific air purifier you will buy.

The type of filter, size of the room, and where you should place it matter most with an air purifier. Then comes the maintenance and replacement cost of filters. Our team has come up with 5 things to look for and 1 to avoid in an air purifier. So let’s have a look at it.

The Type Of Filtration

In the air purifier industry, HEPA is known as the best air purifier filter. These High-efficiency Particulate air purifier filters can eliminate 99.97% of particles in the air. You will have many good-looking air purifiers on the market, but stay focused on the look; you should always go for the air purifier with HEPA filters.

Things to Avoid: Some air purifiers use  UV or ionization technology to eliminate the pollutants in the air by chain reaction. While doing so, they produce ozone, which is terrible for people with respiratory problems. 

Now, we will talk about the stages of filters in air purifiers. The stages of air purifiers are important in measuring their quality. Our traditional air purifier has a washable fabric filter. In HEPA filters, there is a washable filter and then a replaceable filter, which makes it more reliable. Some air purifiers have three stages and the third layer is an activated carbon filter, which removes odors from your house and makes it fresh and suitable for breathing.

Size of the Room

The size of the room also matters when buying an air purifier. Imagine a small air purifier in the big room or hall. It will be able to work properly. So, always measure the size of the room when buying an air purifier. Air Changes per Hour (ACH) is the power of an air purifier for how often it will be able to exchange the air in the room. This only means that the more air changes per hour (ACH) the air purifier has, the better it will work.

4 ACH means that an air purifier can clean and exchange the air in the room 4 times in 15 minutes. The CDC guidelines say that if you want to eliminate airborne virus transmission, then your air purifier should be able to exchange air 5 times in 15 minutes.

The Type Of Filtration

Cost of Air Purifier

The cost of an air purifier is another major factor. While buying an air purifier, you can find an air purifier priced at $190 and a $750 air purifier. So which one to buy? Choosing an affordable purifier is important.

After fixing a budget, you should look at the maintenance price to create an image of the long-term budget. Normally, air purifier filters need a replacement after 3 months, but it can go to 6 or 12 months, and it all depends on the filter and usage.

Some air purifiers are not so expensive, but they need frequent maintenance and expensive filter replacement. So check how often the filter needs to be replaced before buying an air purifier.

Noise Level

It’s to listen to humming sounds at night, but you can’t go on and listen to air purifier sounds while you sleep. You will get irritated with it. While you are working or doing a specific task that needs full attention these sounds can be a distraction, especially in quiet rooms.

You will see different decibel frequency air purifiers going from 24 to 30 decibels. If you are confused, then the humming sound of a vacuum cleaner ranges from about 60-70 dB, and that of a refrigerator is around 40 dB. The noise level of air purifiers is shown on the chart, so have a look at it before buying one.

Smart Features

You can make your life easy with the integration feature with Alexa. You can ask your echo speaker to make a routine of turning off the air purifier before going to sleep. You can just call them and ask them to turn it off and make any other changes.

With that, you can also have other features like starting timers, changing filter indicators, and more. These features make your life easy, but buying air purifiers with these extra features can be expensive for some people.

Downside Of Air Purifiers

Other than the price of buying an air purifier, there are no major downsides or side effects associated with an air purifier with a HEPA filter. Still, some air purifiers use UV and ionization to neutralize air particles and start chain reactions to eliminate pollution. This reaction releases ozone as a byproduct, which can cause coughing and is dangerous for people with respiratory diseases.

Frequently Asked Questions

Do not choose an air purifier that only uses UV light or ionization. They release ozone, which is not suitable for people with breathing problems.

The size of your room matters because big rooms need stronger air cleaners. Look for an air purifier that can exchange air 5 times in 15 minutes.

It depends on the type of air purifier. Some air purifiers need filter replacement in 3 months and some 12 months.

Air cleaners can be quiet or a bit loud. They usually make a sound between 24 and 70 decibels. If you want a quiet one, look for those with lower sound levels.

Air cleaners are good at catching the usual dirty air like dust, pollen, and smoke. But catching smells and gases might need special filters, like one made from activated carbon.


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