Does the QT3 Portable Air Purifier Work?

The QT3 is a small, portable air purifier designed to provide a bubble of clean air on the go. Even though the QT3 is not designed for cleaning entire rooms, our tests show it is effective at cleaning small rooms up to 15 m2. That raises the question, is the QT3 useful in larger rooms?

The QT3 Provides a Clean Air Bubble

The QT3 isn’t designed for cleaning all the air in a large room, but rather creating a personal clean air bubble around you. It’s designed to provide a clean air bubble in places like offices, cafes, lecture rooms, or classrooms.

QT3 portable air purifier

So how large of a “clean air bubble” does the QT3 create? Smart Air ran a series of real-world tests to find out.

QT3 Effectiveness vs Distance test

QT3 portable air purifier real-world tests

To test how far the QT3 can push out clean air, we ran a test by placing the QT3 on the corner of a table in a large room, turning it on high. Using an air quality monitor, we then measured the air quality at distances varying from 0 to 1.2 m away from the QT3 air purifier.

With this data, we can measure the percentage of clean air a person would breathe varying distances from the QT3.

Effectiveness of QT3 Reduces With Distance

As expected, the air is the cleanest right at the QT3’s outlet, with the air being over 95% filtered at this point.

QT3 portable air purifier effectiveness

This drops dramatically within the first 20 cm to 40% filtered, then gradually drops up to the 60cm point. After 60 cm, the amount of clean air hovers around 25-30%, all the way until 1.2 m.

QT3 portable air purifier effectiveness

How Close Should You Stay to the QT3 Air Purifier?

The data above suggests that the closer you are to the QT3, the more clean air you will breathe. In practice, remaining within an arm’s distance (20 cm) of the QT3 will ensure the air you breathe is 40% cleaner air than it would be without the QT3.

Still, if QT3 was placed up to 1.2m away from you, for example on a desk or bedside table, you would still be breathing significantly cleaner air; approximately 25-30% cleaner.

In cafes, hotels, restaurants, and offices, where installing a large-sized air purifier to clean the entire room may not be possible, the QT3 can provide a marked improvement in air quality for the user.

QT3 portable air purifier real-world tests

Bottom Line: QT3 – Creating a safe pocket of clean air

The QT3 can provide a pocket of clean air up to 1.2 m away from the purifier. As the QT3 is a portable air purifier, this gives you the ability to breathe clean air on the go, wherever you are.

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Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.