I have coop inside the barn it is a pen that is one corner of the barn about 15ft..by 10ft. I then hung tarps on the side that is just hard wire and the door so it is actually closed in section now and have a light on I have another I could leave on also how much heat would it actually give if any the floor is deep litter about 4inches at this time.Would it raise the temp a couple degrees or so maybe to above freezing on really cold nites?