Frequently asked questions about Roger

The LED strip on the front of Roger indicates the current state of the air quality: blue = good, orange = moderate and red = poor. So if the LED strip turns red, that indicates poor air quality. This can be caused by smoke, odours, gases from e.g. wall paint, dust, pet hair, pollen, too much ventilation, room sprays, perfume or deodorant. Roger’s LED strip will also turn red if he is positioned close to ultrasonic humidifiers or aroma diffusers as the individual water droplets will be identified as particles.

Roger removes the smallest particles which are not visible to the naked eye from both the air and respirable dusts. Particles smaller than 2.5 microns which can be deposited in the lungs are described as respirable. Roger adsorbs particles measuring up to 0.2 microns with an efficiency of over 90%. He also filters even smaller particles from the air, but with a slightly lower degree of efficiency.

Roger is fitted with a Dual Filter^TM which is a combination of a HEPA filter and an activated carbon filter. The activated carbon particles are fine and black and incorporated in the Dual Filter™. Therefore the filter appears to be flecked with grey.

There are certificates for different types of HEPA filters. Our filters have no such certification.

No, ozone is only produced by air purifiers which contain an ioniser. Roger does not have an ioniser and therefore does not produce any ozone.

Roger is an air purifier designed to ensure that indoor air is clean. During ionisation, ozone is produced as a by-product which once again pollutes the air. Therefore, in order to achieve the highest possible air quality and keep the air as clean as possible, Roger is not fitted with an ioniser.