Doing your research will help you make an informed decision on what you are actually paying for in an air purifier. We have summarised some premium features here with links to external sites so do come back to this page to finish reading.
HEPA filters have different grades (eg 99.5, 99.95, 99.995 etc) but know that the more particles it catches, the lower the airflow. The H11 filter was chosen for The Sqair™ over the H12 as tests showed it gave 27% more clean air at first pass, even though it captured less particles. Read more ◳
You will see claims of 4-7 layers of filtration but you only need two filters – HEPA for ALL particles and a Carbon for gases. As above, the more layers, the lower the airflow, but simplicity doesn’t make money. Read more ◳
In order to monitor the quality of the indoor air, you need accurate sensors but greater accuracy costs more money. Real test data shows built-in monitors can differ vastly to a standalone monitor and can lull you into a false sense of security. Read more ◳
Phone apps seem to be available on all 'smart' appliances these days. But did you know that some purifiers actually leave air at unsafe levels meanwhile, the ‘stupid’ versions keep air at safe levels? Read more ◳
Ionisers are known to emit Ozone, a lung irritant, but a recent study also shows it can sometimes increase air pollution. Read more ◳
In principle, the idea of having a timer means that you don't need to remember to switch it on. However, having the air purifier on when you aren’t there is a waste of money and uses up the filters faster. Our purifiers take just 20 mins to clean the air. Read more ◳
UV lights can, indeed, kill coronavirus but at levels far greater than in most air purifiers. Before you rush out to by a purifier with UV lights, do make sure you know the UV intensity and the wattage Read more ◳
So now that we have highlighted some premium features you may or may not need, read how a DIY air purifier costing US$68 has outperformed a purifier costing US$2000 Read more ◳