Be aware with these (don't get me wrong they are wonderfully effective and efficient, especially if you foam around the minimal openings properly) you absolutely have to tilt them properly and clean them monthly if you don't want legionnaire's disease or other mold growth.
Source: Someone that got the refund after using AI video to 'cut the cord' because it still works just fine if you clean it regularly and have it set up per the manual, but fuck corporations.