Yes, we have one and it`s great, but, as the first reply suggests, not exactly cheap. The make we have is Amcor and if you google that name you will find plenty of info including price comparisons. If money is not a problem then I would recommend that you get it `plumbed` in, in other words get a hole cut through to the outside wall so that you don`t have to have a window open and an ugly pipe hanging out of it. (It`s a bit like a tumble dryer pipe.) All the necessary bits for that come with the Amcor ones, just needs a DIY enthusiast or tame builder to do it!