I run no heat for my girls. I do have a heated water base. My coup is build inside my barn so it adds extra protection from the elements. I enclosed the outside run for the winter with tarps. It will be done better in the spring with a roof and windows to let in the winter sun to warm the outside run. I let my girls out every morning, they come and go as they please. They are currently walking around in the snow right now( not deep snow) but they are still walking around in it.