That's how mine will be also. Do you have light leak problems through the door seal or anything ?I have, and over the winter it was perfect! The lights kept my plants nice and warm and they were very happy. In the summer I have to keep the doors open or they don't do so well. Heat really is a challenge. But my shed is fairly small and right in the sun. If it was in a shadier spot or had more room for airflow I don't think it would be an issue as long as you have fans and some ventilation. These ladies are vegging to go outdoors.