Panel radiators, also known as central heating radiators, are an efficient heating option and are easy to install. They are ideal for use in the home as well as some commercial settings such as in offices. They come in either double or single panelled options. Double panelled radiators, also known as type 22 radiators, have 2 steel panels and 2 convectors which produce a substantial heat output, making them perfect for larger rooms. Single panelled radiators, also known as type 11 radiators, on the other hand are perfect for efficiently heating smaller rooms.