The building is going to be 15x20. I was hoping a window heat/ac unit would be enough to maintain temps. I was told that with the closed cell foam sprayed in, it would be pretty much air tight. The heat put off from the racks and cages would do most of the heating and the window unit would rarely kick on. I also have a generator on standby incase of power outings. Something I hope I never have to use!!!

Shawn

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