This article is the first in a series on air purification technologies. It focuses on air purifiers with HEPA filters whose efficiency must be questioned.
A filtered air purifier is a device designed to remove domestic and industrial pollution. It is generally made up of several superimposed filters and covers an area of 5 to 150m².
HEPA filters and their theoretical efficiency. The name "HEPA" is often presented to consumers as a guarantee of efficiency. Highly controlled, it is only awarded to filters that have passed the DOP (Dispersed Oil Particulate) test. This test, developed in the 1950s, measures the filtration efficiency of particles larger than 0.3 microns. In the purifier market, many products are presented as "HEPA-type", "HEPA-like" or "99% HEPA" and have not been tested in the laboratory. Their manufacturers would like to take advantage of the confidence that consumers place in HEPA-certified air purifiers. Nine, this one has indeed an extreme efficiency on the particles that pass through them. Envious enough to make people envious!
The DOP test does not measure the filtration efficiency of particles smaller than 0.3 micron, which represent 90% of suspended particles, including bacteria and viruses.
Depending on the type of appliance and the filters that make it up, maintenance is a delicate but essential operation. It is closely related to the pollution rate and the quality of the prefilters. Manufacturers are adamant that if the purifier is not regularly serviced, it becomes a source of air pollution itself.
Natural environments are rich in negative ions. This is precisely the principle on which the air ionizer is based on. However, do you know how this technology manages to capture the pollution particles contained in the indoor air to purify your home?
In December 2019, a respiratory virus of the Coronavirus family appeared in the Wuhan region of China and has now spread to all continents.
Purifying indoor air while protecting your health and the planet is possible! Say goodbye to filters and make way for negative ions: choose an eco-responsible air purifier that will easily reduce energy and resource consumption.