This has been very helpful with my fall ragweed allergies. I notice a big difference with a reduction in my symptoms. I also like how, when cooking, it senses odors from the kitchen and ramps up its fan speed to combat the odors. I purchased one of each of the three sizes for different areas of the house and have been happy with all three. It is simple to operate and very quite - like my Bosch dishwasher (which is one reason I went with this brand).

It cleaned the air up in no time. I highly recommend this product. Filters can be expensive. But, in my case, worth it.