You do not have to be a genius to realize that bespoke radiator covers are mostly used for design, child protection and comfort – forget about those hissing sounds. But then, covers reduce the heat delivery to the room. As a direct consequence, some of it is lost through the walls, leading to higher energy bills. How do you tackle this problem? Easy. Add some insulation on the exterior of your home and heat will no longer be lost. At this point, you got everything – design, good looks, protection for kids and pets, as well as the same energy bills.