We’ve been using it almost 3 weeks to remove condensation/frost from windows on our heated 3-season porch, a 10’ x 12’ area.  It’s doing an excellent job keeping the windows free of moisture, except when it is very cold outside (teens and below).  When it is that cold, once melting starts, the dehumidifier is capturing the moisture before it runs down the windows to the floor, a great improvement! Controls are clear, and emptying the tank is easy.  The casters are a great addition, making it easy to adjust its location.