It works very well but I have several qualms with the design & UX of the unit:

• The difference between low and high fan speeds is minimal (both in terms of noise and airflow).
• The Styrofoam insulation inside is Translucent and lets in a LOT of light, even on a North-facing window (northern hemisphere)
• the power plug has a BRIGHT green led that will light up the entire room
• there appears to be no way to disable the "beep" that happens EVERY time you push a button or change a setting!