We had our back porch made into a patio room some years ago. The floor is obviously concrete with 3 sliding doors that go out to a deck. There is carpet on the floor and ceiling fans, however, there is no heat that runs out there. I am trying to figure out the best way to heat the room so it can be used all year. 2 walls face the outside and the other 2 face the interior of the house with 2 doors leading to the garage and house. We live in Southern Ohio.