The first filter is usually an outer nylon mesh which catches pet hair and large particles of dust. This filter should be cleaned on a regular basis using a handheld vacuum cleaner if possible.
The second level of defence is a carbon filter which usually consists of thousands of tiny black beads contained in a collection of separate honeycomb-shaped pods. This filter keeps the air smelling fresh and will need replacing after several months.
The final and most important filter is the HEPA (High-Efficiency Particulate absorbing Filter). This filter is made from a specialised plastic or fibreglass. The HEPA is the last line of defence – it’s the one that deals with the smallest particulates – and this filter will also need to be changed after about six months use. Most decent models will also tell you when to change the filter.
Best air purifiers 2021: Do air purifiers work? Can they remove viruses, and which are the best in the UK?
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Best air purifiers 2021: Do air purifiers work? Can they remove viruses, and which are the best in the UK?
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Best air purifiers 2021: Do air purifiers work? Can they remove viruses, and which are the best in the UK?
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