I have two Fornuftigs for bedroom and office, and a Winix Zero in the living room. The Winix definitely beats Ikea in terms of noise production on max airflow, it positively sounds like a jet is taking off. It moves quite a bit more air of course. I was rather surprised that the Fornuftig is nearly perfectly quiet at the lowest setting, which is really great for a bedroom and offce, although I don't know how much or little it stil does at that setting.