This is a difficult item to review. It is silent and eliminates allergens in the air by burning them with heat inside the unit. You know it's on because it gets hot, but I don't know how you can be sure the science behind it is sound. I'll live with it...

Only had it a week think it is working,still unsure of it.

I waited a week before writing this review so I could give my honest opinion. The device IS totally silent and you wouldn't know it was working unless you put your hand over the top and feel the warmth (as per the instructions). The light you can dim...

I bought this a month ago to combat a damp smell in the house and to relieve allergies. I had my doubts that it would work but I was wrong. It is simply fantastic within a day or so any bad smell was eliminated. Also my coughing and sneezing...

Brilliant product. Really quiet and seems to clear the air as it states. The light has a dimmer alo which was a nice touch.