Sqair Carbon Filter


Only 8 left in stock

HEPAs capture particulate pollution (things like PM2.5, PM10 and pollen). Activated carbon filters get smoke and VOCs. These are hazardous gases that normally pass right through a HEPA.

This is the replacement carbon filter for The Sqair air purifier.


Sqair Activated Carbon Filter

Eliminates smoke and VOCs from your room

How the Sqair cleans your air





Paint odour









*The carbon filter is an optional add-on. Not everyone needs carbon, so we let air-breathers choose whether they want carbon or not.

What is an activated carbon filter?

HEPA filters capture particles like small PM2.5 particles. Activated carbon, on the other hand, captures odours and gases like volatile organic compounds (VOCs). VOCs include harmful gases like formaldehyde and benzene, and can cause cancer, throat irritation, dizziness, and other not-fun side effects.

Pair your HEPA with a carbon filter for cleaner air in your bedroom.

How does activated charcoal work?

The carbon filter mesh consists of many carbon granules that have been treated to become extremely porous. This means that they have huge surface areas. In fact, just one gram of activated carbon can have between 500 to 1500m² of surface area!

This massive surface area allows the carbon granules to trap many harmful gas molecules, giving you that cleaner odourless and chemical-free air.

Sqair Carbon Filter Eliminates Smoke and Odours

Does your bedroom or home have odours or second-hand smoke? Get the Sqair Carbon Filter to effectively remove the harmful chemicals and odours.

HEPAs are great at capturing particles, but we’ll need a carbon filter if we want to capture gas pollutants.

The Sqair carbon filter screen is inserted below the HEPA filter, capturing dust and lint, hence allowing the HEPA to last longer.

Does everyone need a carbon filter?

Not necessarily. Not all homes have dangerous levels of harmful gases or VOCs that would call for a carbon filter. VOCs are more common in homes:


Recent renovation


Recent repainting






Inflammation or asthma symptoms


Near a source of gas pollution like a factory

Purifier companies have a financial incentive to convince people to buy carbon filters. They make more money if they can scare people into buying carbon. We won’t do that. Check the facts and data first before spending your money.

Does activated carbon really work?

To answer this question, we ran tests with an Industrial Scientific MX6 iBrid gas detector that can detect VOCs and many other harmful gases. In an enclosed porch, we lit three cigarettes (known to emit formaldehyde and benzene), turned on a Cannon fan with a carbon filter, and tracked VOC concentration. We also ran a control test of a fan with no carbon attached.

The blue line shows how the carbon layer effectively reduced VOC concentrations.

Carbon Test: VOC Reduction

Replace your Sqair Carbon Filter in 6 easy steps

Open up the Sqair

Remove the HEPA filter

Remove the used carbon filter

Insert the replacement carbon filter

Replace the HEPA filter

Replace the Sqair body
Your Purchase Includes 1 × Sqair Carbon filter
Colour Black
Dimensions L × W × H (mm)
255 × 255 × 11
Weight 220g
Lifespan Depends on the air quality around you
(Typically 1–3 months)
Material Activated Carbon Pellets


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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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