Indoor air is 5x more polluted*
than outdoor air

Indoor air is 5x more polluted* than outdoor air

Contrary to what most of us believe, the air we breathe is more harmful.
This is alarming as we spend about 70%** of our lives indoors.

*Source: U.S. Environmental Protection Agency **Source: Japan NHK Broadcasting Culture Research Institute

How to choose
the right air purifier?

When it comes to purifying the air in your room, an air purifier needs to do two things. It needs a means of removing harmful particles and gases — typically done by a set of filters and in some cases by the use of positive and negative ions too — as well as the ability to circulate most of the air in the room through those filters multiple times. You’ll want to choose a device that does both of those jobs well

We conducted real-life tests to compare popular air purifiers to help you find the best one.

Air Flow &
Suction Tests

If the air is stagnant, and there is not much air movement, harmful things like bacteria, viruses and dust are going to settle on hard surfaces. So, air circulation and suction are two key things that will help improve indoor air quality significantly.


A lot of air purifiers are only capable of passive purification, which means that only an air filter is used to remove harmful particles. This isn't enough. Active air purification is more effective. In addition to the use of filters, it involves the release of both positive and negative ions like those found in nature.

Density Test

There’s an abundance of positive and negative ions in nature. They help to keep the air clean and fresh. For effective air purification, a high ion density as well as having equal amounts of positive and negative ions are essential.

Be Sharp, Choose Sharp

Ion Plasmacluster