The appliance performance is very good for a surface of 30m2 (living room, bedroom, kitchen, etc.), it provides filtration of PM 2.5 fine particles up to 2.5 micrometers (PM2.5) and PM10 (particulate matter of 10 microns).
We find in these two categories are the most common particles ie those generated by burning wood, diesel, heating oil, coal they have the particularity BE very light and not fall quau few hours, it is of course effective on allergens.
Philips has equipped this camera last generation sensor measuring the quality of air, I lai factory tested (standard) start light is red inevitably, it took a few hours to see the light change color and turn blue , jaurai desired a less refined system, eg color gauge to BE informed the filtration level, 2H count for about 30m2. If you stopped a few minutes, it automatically reverts to red, the time will be shorter to turn blue but still a little long.
On a day attendance I havent noticed anything special, however, after leaving a few hours on my return i had the feeling of a cooler air, difficult to describe this experience, not dodeur, a tune that finds lon mountain this is very nice. Maximum efficiency is about cooking odors and cigarette filtration works really well, at speed 3 (fastest) I do not suggest you stay in the room the noise is really important (54dB), but efficiency is the appointment -you, night mode mixing is provided the noise is reduced to 34 dB, having a light sleeper I just resign myself to sleep WHEN IT is heading lai therefore stopped!
Consumption is reduced to 30W, this is very low for this type of product, at the three filters have found a pre-filter models (grid) for coarse fibers, the second AC4123 / 10 it is a charcoal filter, the third AC4124 / 10 which is a multilayer filter (HEPA). The price of these filters is an element to take into account when buying count just over 60 euros to change both, the sensors tell you when the time will be saturated lorsquils.
The operation timer is a good idea, it can not operate the device permanently, product design is simple and contemporary, i appreciated.
To: Effective on odors (cigarette, kitchen) on the pollen (the filter bears the scars), very successful design, light.
Against: a cheap filters.
Conclusion: Product very effective on odors (this is what is noticed immediately), the filter seems effective because the air is fresh, you can not tell if the fine particles (PM2 .5) are well filtered, why I trust Philips . For the moment this product is adopted by the family and we appreciate the use.