We haven't received new filters yet so we can't review the Clean Air Club Subscription, but we can review the Air Purifier. We absolutely love it.
We keep it set to "Auto" mode, but we never gave it much thought about if "Auto" mode really worked.
My wife was frying food in the kitchen which caused a little bit of smoke.
Next thing we know the Sans went into "High Fan" mode and changed the light color from blue to yellow. We could also see the particulate meter increase to show there were more particles it was cleaning out of the air.
It was a nice surprise to see it actually go to work to clean the air in our house.
We couldn't be any happier with our Sans Air Purifier!