I'm wanting to build a brooder for the garage. Basically I'm over having a 4ft tough in my house I feel pretty comfortable with being able to keep the chicks warm and how to build. My main question is, if I were to hatch during the warm months, when the outside temps are 90+, I have no idea how hot it gets in the garage. Could it get too hot? They definitely would not need a heat source. I'm more worried about if they need an ac source!