It's a little larger than we thought - modestly inconvenient to fill. Why you just can't open the top to add some water evades me. I suppose the engineers had a reason. Otherwise we're happy with it.

This product was misleading as to the amout of water held. It only holds about a gallon, not 3. It is OK, but not great as far as keeping the humitity up in our home. It does run quite, but it runs all the time. We would not purchase this product again. We did go onto their web site before purchasing, but did not gain any more information about the product.