Good quality air purifiers will filter out a number of airborne nasties including, pollutants, allergens, and toxins that might be present in the air you breathe.1 Allergens are substances that cause an allergic reaction, including asthma.

Australia has the highest rate of asthma in the world2, and allergic asthma caused by allergens such as pollen, dust (and dust mites), food items, and mould3 is the most common form.4 Then there are the non-allergic asthma triggers cause by things like viruses, air particles from smoke, cleaning products, perfumes, and aerosol products.3

So, can an air purifier help? If it fulfils certain criteria – yes.

Good quality air purifiers will incorporate a range of different filters designed to remove different compounds. For example, there might be a filter that extracts dirt, hair, pet fur, dander, and course dust, while a carbon filter might remove odours and volatile pollutants.

According to Choice Australia5 one of the most important filters is called HEPA because it traps dust, smoke, mould and other particles down to a tiny 0.3 microns in size. To put that into perspective, a human hair is about 75 microns across, and anything below 40 microns is not visible to the naked eye.6,7 HEPA is an abbreviation for High Efficiency Particulate Air.

What to look for in an air purifier for home

Firstly, you need something that will filter out the ‘big things’ like pet hair, fur, course dust and dander.

Then you need to take care of the less visible nasties with a HEPA filter. This type of air filter can remove at least 99.97% of dust, pollen, mould, bacteria, and any airborne particles with a size of 0.3 microns.

Adding an activated carbon filter into the mix can help remove odours, second hand smoke and gas pollutants.

But if you want to take care of most things that could trigger allergic reactions, there are photocatalyst filters and UV treatment.

The Welcare PureAir Household Air Purifier features a 6 Stage Air Purification System including HEPA (H13) filter, UV Light and photocatalyst technology for comprehensive air purification. It can kill airborne viruses, including Influenza, and remove dust, mould, bacteria and other pollutants, making it ideal for those who have pets, suffer from allergies, bushfire or pollution prone areas.

Check it out here.

Sources:

  1. https://www.livescience.com/how-do-air-purifiers-work
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3353191/
  3. https://asthma.org.au/about-asthma/understanding-asthma/asthma/
  4. https://www.webmd.com/asthma/guide/allergic-asthma
  5. https://www.choice.com.au/home-and-living/cooling/air-purifiers/buying-guides/air-purifiers
  6. http://www.bacteria-world.com/how-big-micron.htm
  7. https://www.bench.com/setting-the-benchmark/how-big-is-a-micron