Gros quality problems 1

Many complaints about this.
- The quality of the electrical circuit is defective. Problems clapping and arcing on the 8000V circuit, even removed filters
- The IFD filter is fair quality, the dielectric material leaking and generates ozone (pollutant and irritant) corona
- Independent tests show a filtration rate of only 70%:
[...]
- The product is noisier announced, it is not possible to sleep with unless you have a heavy sleeper

Finally, it is very difficult to find reliable information on these air purifiers, which have no standard outside the HEPA certification, which sell many, many more.
"Filters up to 99.9% of the particles" means nothing: what size particles? "Up to 99.9%," but how many on average?

Finally, a few comments:
- Important EMF field near the device (8000V), the camera makes a slight power line noise and electro people feel discomfort nearby
- Electrostatic precipitators do not filter microparticles (the most harmful, PM25 and PM1), emitted by wood combustion and diesel engines, and air mucous already filter out particles greater than ten microns. The utility is questionable.

One possible use: people allergic to pollen, in which case it will be effective during the few months that he will not fall down due to lack of sufficient quality. Reading the reviews for the US version (HFD120-Q) the failure happens usually live between 6 months and 1 year.
Personally, I asked for a refund.

Efficient products (True HEPA) are expensive, noisy, energy consumers, and filters should be replaced every six months at a cost of 80-90. In short, I gave up the idea of ​​air purifiers. If you are sensitive to pollen and pollution rather wear a disposable mask, it will be cheaper, more efficient, and you can also enjoy outside.

It should be a single star, but it will be for both a fair price and a great value used as a simple pollen filter. You get what you pay for.