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Buying an air purifier

Learn more about different types of air purifiers and how they make the air in your home healthier.

Shop all air purifiers at Argos
Buying an air purifier.
Air purifier in room with family.

What does an air purifier do?

An air purifier is a device that makes the air inside your home healthier to breathe. It does this by trapping the tiny, airborne particles that cause allergies, odours and irritation, while letting the clean air pass through.

    An air purifier in a bedroom with illustrative graphics.

    How does an air purifier work?

    Most air purifiers use a fan to suck polluted air from around the room and push it through a series of internal filters. From here, the air is cleansed of pollutants and odours before being released back into the room.

      An air purifier on a bedside table.

      Air purifier benefits

      Air purifiers keep nasty allergens like dust mites and pollen out of your home’s air flow. They can also filter out large airborne particles and banish unpleasant odours such as pet smells, cigarette smoke and cooking fumes.

      Choosing an air purifier for your house or flat

      How an air purifier filters the air inside a room varies from model to model. Here’s a brief round-up of the different types available.

      A family sitting and playing in a living room containing an air purifier.

      Popular types of air purifier

      HEPA air purifier - Air purifiers with HEPA filters are highly effective at catching microscopic particles that cause allergies and trigger asthma. Best for - allergies.

      Ionic air purifier - This type of air purifier emits electrically charged ions which attract and attach on to dust and allergens and remove them from the air. Best for - common household air pollutants.

      Carbon air purifier - If you want to remove odours, smoke and vapours from your indoor air then choose an air purifier with a carbon filter. Best for - smoke and odours.

      UV air purifier - These air purifiers contain an Ultra Violet (UV) light that breaks down and destroys floating bacteria and airborne viruses. Best for - dust mites and mould.

      Which air purifier is best for your room size?

      In order to know what kind of air purifier is best for you, you'll need to work out the square footage of the room in which it’s being placed. Typically, desktop and mini tower models are best for small bedrooms, nurseries, and rooms up to 155 square feet. For living rooms and large bedrooms, opt for a tower or console model with a room size coverage of over 300 square feet.

      Purify the air you breathe with Dyson

      The Dyson Pure Hot & Cool™ purifying fan heater automatically detects particles, gases and odours in your room, capturing 99.95% of allergens and pollutants.

        Features to look out for when buying an air purifier

        Speed settings

        Air purifiers often have low, medium and high speed settings. Generally, the higher the speed setting, the more clean air is circulated back in the room.

        Quiet operation

        It is useful to consider the noise levels of an air purifier, especially if you want one to run in a quiet environment such as a bedroom or nursery.


        An oscillating air purifier moves from side to side as it works. This allows filtered air to be evenly dispersed throughout a room.


          With a programmable timer you can schedule an air purifier to clean the air while you’re at work or asleep at night.

            Air purifier reviews

            Air purifiers vs humidifiers

            Although both air purifiers and humidifiers help improve the quality of indoor air, there are notable differences between the two. Humidifiers make the air around you cleaner and fresher by emitting water vapour into the air. They don't, however, cleanse the air of impurities like air purifiers do.

            Shop all humidifiers

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