Has anyone built a building to house their incubator and brooder?

[archershan]

I am wanting to build a separate building/room within my barn. My barn is not insulated and is far to large to insulate. So I am wanting to frame a room that would be insulated and climate controlled with a window unit. I need advice on what insulation, how big, temperature and possibly layouts??? I want it to hold a couple little giant incubators as well as a 3x6' brooder I built. Thanks