I just put my whole brooder into my coop. I used a heating pad (a DIY MHP). My coop is solar powered. I just left the brooder open so they could get in and out. They slept on top of the MHP, but they didn't use it at all during the day. I kept them in there from week 2. It wasn't cold then (it was in the 90's here), but the MHP would have kept them plenty warm.
I loved the MHO, but I am intrigued by the wool hen....
I loved the MHO, but I am intrigued by the wool hen....