As I have already tried several air purifier (Allergy and still smoking) and was never satisfied (effect and volume), I have the Comedes LR200 ordered me because of positive test reports. Arrived and unpacked, I did not even need the instructions for commissioning. The note on the front panel told me that I only have to take it out of the film built HEPA filter and has to replace. Is very simple! Left and right, press the two catches and remove the front cover. Among them is a dust filter is maintenance-free, can be sucked and including a HEPA filter with activated carbon fleece on the back. Sheet from and re-used, plug it in and you will flash the fuzzy display and the air quality is measured. Then the unit switches to automatic mode and the air quality is displayed on an LED bar graph. After re-inserting the filter only briefly the reset button must be pressed. The air purifier Comedes LR200 can also be set manually both in automatic mode, as. Well, that's passive and active filter system with this device. Internally, it has a coarse dust filter made of metal, a HEPA filter with activated carbon filters which can be cleaned and are interchangeable. Including in the device a Titanoxidfilter with a UV lamp and an air ionizer, the bacteria and viruses killed by the ionization and binds air smallest particles. This is a permanent filter system that needs to be changed only every 20,000 operating hours. In the accessories there are other special filters on the manufacturer's site on the Web, for example, a special smoking filter, Allergy Filter, Standard Filter and an additional activated carbon post-filter the better odors out of the air filters, as the coal flow is even thicker. I got my unit equal taken with the activated carbon post-filter in operation and am very satisfied. The advantage of this device to the other air purifiers from well..und ... honey and the rest of them is the active and passive air cleaning and very quiet operation. Therefore, it is also very well suited for the bedroom. On the control panel are several LED indicators for Fuzzy (auto) mode and the fan speed, the ionizer, the timer, UV light and a filter indicator. An IR remote control is also. So far, the LR200 is Comedes purifier the best I ever had and I no longer want to do without it. The price-performance ratio is good, I have not found with other manufacturers for this price this service. The various filters in accessories from Comedes convince me, because I can use the filter exactly who I need. As allergies and smoking I have installed to test only times the Allergy filter and the activated carbon post-filter from the accessories and I will continue using the device and test. The low power consumption of only 40 watts was me also very important for continuous operation. Negative product features are there as far as I can tell none, except that possibly is the large display of the active UV light, which kills bacteria and viruses in the bedroom a little too bright (subjective perception). Does not matter, because with eyes closed in sleep, this is not really noticeable. I'm very satisfied with the Comedes LR200 air purifier and can only recommend the device. A "must" for clean air on this, I mean, fair price!