Best Air Purifiers 2022: Don’t Let Allergies Get the Best of You


What can air purifiers do?

Air purifiers use a fan to draw in dirty air from one end, remove pollutants, and release clean air from the other end. The exact contaminants that can be treated depend on the technology used. All of the air purifiers we’ve tested here use a HEPA filter that captures at least 99.97% of airborne particles as small as 0.3 microns. Also known as particulate matter, these particles can enter the lungs, causing breathing problems, especially in allergy sufferers.

Sources of particulate matter include dust, dust that can be disturbed and released into the air during cleaning, fur and pet hair, smoke and pollen. HEPA filters are not suitable where dust settles, as they can only remove airborne particles. In other words, you still need to clean effectively. HEPA filters also have a lifespan after which they will need to be replaced. The exact time will depend on the air purifier and how polluted your air is, but expect to buy a new filter between three and 12 months.

Volatile organic compounds (VOCs) are harmful chemicals often found in detergents, paints, and some cosmetic products. VOCs are also found in some industrial products, such as synthetic carpets and old furniture. Most air purifiers cannot touch these pollutants; those that can, may not filter all VOCs.

Instead, you’re better off using an air monitor such as the excellent one Fubot, to monitor your home to see what VOCs it emits. If possible, switch to less harmful products. Some models of air purifiers also have an ionization option. They use negative ions that cause particles to stick to surfaces such as a wall or floor. Ionization has been shown to reduce the risk of some viruses. Ionization alone is not very effective, so always combine it with an appropriate air purifier.

What else should I look for?

All air purifiers use some type of fan, so look for one that is quiet enough for your purpose. We measure the sound at maximum and minimum settings to help you choose. The automatic mode, which boosts the fan when the purifier detects dirty air, is useful as you can leave the purifier to do its job. You need to match the air purifier you buy to the size of the room or space you want to keep clean. Cleaners are calculated per square meter, so buy a size that is large enough.

Finally, you may want to look at the Clean Air Delivery Rate (CADR), which shows how effective the purifier is on different types of allergens compared to the introduction of clean air. For example, an air purifier with a CADR rating of 190 for dust particles is as effective as adding 190 cubic feet of clean air per minute. In short, the higher the CADR rating for each type, the better. And CADR results are comparable for all products, helping you make the right choice.

CADR has three main ratings to help you decide: Smoke uses very small particles between 0.09 and 1 micron in size; dust has particle sizes from 0.5 to 3 microns; and pollen uses particles between 5 and 11 ┬Ám in size. It is best to choose an air purifier based on how effective it is at the pollutants you want to remove. For example, hay fever sufferers should choose an air purifier that is effective in removing pollen.

Finally, since air purifiers come in different sizes, the CADR rating should be equal to (or greater than) 2/3 of your room’s size in square feet. For example, a 135 square foot room would require a CADR rating of 90 or higher

Best Air Purifiers 2022: Don’t Let Allergies Get the Best of You

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