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About a year-and-a-half ago I had a thread on making a chiller out of a window AC. I just got this barrel heat exchanger to make another one and so I will be building one out of a barrel heat exchanger. Heat exchanger is made of titanium. So right now I'm looking for a window air conditioner that's up to 10,000 BTUs, I could up to 12000 BTUs, but for my display tank 10000 BTUs is more than enough. When I'm done, $250 worth of parts I have made a $1,200 chiller. Follow along
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