You can also save a lot on energy costs with simple and quick insulation solutions. For example, buy our innovative TONZON HR radiator foil. This foil can be attached to the back of the radiator, making it completely invisible. Radiators are generally mounted against walls. As a result, the heat that a radiator gives off partly disappears into the wall. You then have to burn harder to achieve a pleasant temperature inside. With TONZON's HR radiator foil you prevent unnecessary heat loss and you will notice that in your wallet. Buy the extra efficient HR radiator foil for radiators with a flat back. For column radiators you can buy the somewhat firmer “Luxe radiator foil”.