Unit stopped working after 3 months. Not generating ozone at all, only the fan blows air. Also temp and humidity meter on front stopped working after only a month, not really useful but still. That meter as 2 AG13 batteries, the whole unit need to be opened (10 screws) to reach it from behind and replace the batteries.

I think most consumers don't know enough about how these units work scientifically; therefore they could cause more harm than good. The unit is well made but had no setting control other than time lapse. The odour of ozone lasted for days after less than 2 hours use.

Great product for odors, and it's exactly what I ordered

nice little guy