I was always surprised that no one has yet to develop a window-mounted chiller, as what is the point of running a compressor in your living room exhausting hot air back into your living space. Two plus years ago, I picked up a used 1/3 hp AquaLogic Delta Star in-line Chiller from someone in the club who was living in Waterbury at the time. I like to refer to it as Scuba Dave's Chiller, as it was the only time I ever beat him to the punch on buying something. Anyhow, I live in a house without central air conditioning. Even if I did live in a house with central air conditioning, do I really want a 1/3 hp compressor in my living room being noisy and exhausting hot air? If I move the chiller into some other climate-controlled location, then I have to pump water all the way to the chiller and back, which leads to a pretty large hold up volume. Most of us have windows closer to our reef tanks than a location where we can run the chiller, so I said: why not invent a window-mounted chiller that runs just like a window-mounted AC? I was not about to rebuild an AquaLogic Chiller, so what I did is build a wooden housing for it to sit in the window, where it can intake air from one side and exhaust on the other. The wooden housing fits tightly, but the openings on the side match up with the openings in the chiller. I imagine that very little airflow is lost.