I'm trying to put air conditioning in my master bedroom. It has a loft and hence high ceiling with around 500 sq ft + 350 (loft). It is also on the third floor which is pretty high. As far as I can tell there are 3 options. split a/c, portable unit and window a/c. Split a/c is expensive and portable units probably not good enough/reliable etc. so I'm leaning towards window a/c. Anyway, this is just a background story to what I'm trying to ask.
I happen to see this on my neighbor's window which looks like a window a/c unit. It seems pretty thin but I'm unable to find anything like that anywhere. Could anyone tell me from the picture below if this is a window a/c unit and if so, what could it be? Its at the bottom of the right window that doesn't extend outside much, almost the same level as that of the window.