There are a few different types of air purifiers to choose from.
As for which are the most effective, it really depends on your needs. Let’s take a look at the different
types of air purifiers in
Some air purifiers come with a pre-filter which is ofter a coarse filter which is designed to filter out
larger particles such as hairs, dustballs, clothes and carpet fibres etc. Not having a pre-filter is not
necessarily a bad either.
Manufactures design their fitlers so that they can handle larger particles without becomming clogged.
HEPA (High Efficiency Particulate Air) Filters
They live up to the hype that makes them the gold standard in air purifiers. A HEPA filter, which was
created to trap radioactive dust particles, by the Atomic Energy Commission, are generally able to
remove 99.97 percent of air particles.
Impressive, especially since we’re talking about particles as tiny as 0.3 microns—or 0.1 microns
depending on the brand you choose!
However HEPA fitlers and Air Purifers are often quote a HEPA Grade
- What does a HEPA Grade Mean?
The Filtration Efficiency
refers to how much air bypasses the fitler without being filtered down to 0.3 microns. So for
example for an H13 fitler 0.05% of air would pass through the air
purifier without being filtered.
- What does True HEPA Mean?
A True HEPA air purifier
captures up to 99.97 percent of particles as small as 0.3 microns.
Activated Carbon Filters
Though not generally used alone and instead combined with other filters to purify air; activated carbon
or charcoal filters do serve an important purpose. They’re great for trapping gases and odours and are
able to neutralize smoke,fumes,
and chemicals making them an especially great choice for households with wood burners and smokers.
People who suffer from Multiple Chemical Sensitivity (MCS) will also benefit from an air purifier with
an activated carbon filter because they
absorb chemicals in the cleaning products used at home and formaldehyde, which is found in carpet and
upholstery, and wood panelling.
Air purifiers with a carbon filter as well as a HEPA filter are also available and ideal for those
looking to get maximum results. When choosing an air purifier with a carbon filter, remember that the
larger the carbon filter, the more
toxins it will absorb, which means cleaner air and longer use before needing to be replaced.