This humidifier is great for adding moisture to the air, helping both my dry skin as well as my allergies through the summer. We usually like to run our humidifier through the night in the summer. It also cools our room a little bit, as evaporated water cools the air. Ease of Cleaning If you use tap water, it can build up mineral residue that can affect the performance. But if it is cleaned once a month or so, then it doesn't build up too much and it keeps working fine. Distilled water would make cleaning easier, but it is also more expensive. Durability We have not had a single problem with this humidifier since we started using it, so it seems like it will hold up well (but we have not used it for long, so it is harder to say for longterm use). Design Especially like that the water tank is on the side of the humidifier. It is easy to remove and fill. The fan is pointed a good direction for getting the humidified air out into he room, and it is strong enough to move a good bit of air.