QT3 HEPA Filter


In stock

Replacement H11 HEPA filter for the QT3 portable air purifier.

2 × QT3 HEPA filter

HEPA filters capture particulate pollution like PM2.5, dust and pollen. HEPA filters are the key to clean air, so make sure to replace them regularly. The QT3’s HEPA can give you up to 800 hours of clean air.

IMPORTANT: Due to the expected high volume of orders and messages that we’ll receive on this period, we kindly ask to patiently wait for our email which confirms your order and payment. We’ll also advise once your Smart Air QT3 order is ready. =)

For Bank transfer/deposit payments: Please note that proof of payment must be sent within 24 hrs to confirm the order. No reservations.

Breathe safe!


QT3 HEPA Filter

Clean air, wherever you go

The QT3 portable HEPA filter protects you from air pollution

Air pollution is a serious environmental and health issue. And it’s hard to escape – even our homes are filled with these dangerous microscopic particles.

The QT3’s HEPA filter effectively traps particles like PM2.5, dust, pet fur, viruses and mold. You won’t have to worry about your allergies or asthma any longer!







Are HEPA filters effective against COVID?

A common concern is whether HEPA filters can filter viruses like the COVID-19 coronavirus. HEPA filters removes particles greater than or equal to 0.3 microns, but virus particles are smaller. The coronavirus measures 0.06 to 0.14 microns in diameter. Are air purifiers then powerless against viruses?

Actually, HEPA filters work great at capturing viruses. This is because a HEPA filter works not like a net, but through a process called diffusion. Learn more about how this works here.

How often should I change my QT3 HEPA filter?

We recommend changing the filter after 800 hours of use. The QT3 has a built-in feature to remind you when 800 hours of use have passed.

Can I wash a dirty HEPA filter?

Unfortunately not. We ran experiments to test this and found that washing HEPA filters does not prolong their lifespan. In fact, washing HEPA filters with water actually decreases performance. That’s why we recommend you replace your QT3 HEPA filter after the maximum hours of use.


Your Purchase Includes 2 × QT3 HEPA filter
Type H11 grade (95%)
Colour White with black rim
Lifespan Aprox. 800 hours
Dimensions L x W x H (mm) 118 x 112 x 44

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Additional information

Weight 3.8 kg
Dimensions 60 × 60 × 9 cm


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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.

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