Does anyone know if the pipe coming out of your house has to be 4ft off the ground. Someone told me that. I am trying to pipe a new tankless out of my basement and want to go out the side wall but when it comes out it only is 2 ft off the ground. On ATOH Episode 713. They install a tankless and its exhaust when it came out of the house was too close to the furance and they had a kit (that I can't find info on) that elbowed up about 4ft and had a nice cover over it. Can someone give me advice?