I had bought couple of air purifiers last season for gifting and I tell you do whatever but do not go for this particular unit. It is a super plasticky thing with no grace or elegance in form and within months of using it, started making noise. Add to that the whole follow-up process with these guys. The CCE are rude and absolutely helpless themselves. No point spending a buck on them! I am extremely disappointed. The thing is even if the customer support is bad at least a product should be good enough in itself to justify the money spent. In this case, not even that. Within a year it became almost a piece garbage.