The house where I live, my knowledge was in the 19th century and patched together a makeshift back to World War II refugees. The heating systems have been gradually renewed in the different decades, so that in our house now a colorful mix of different radiators exists. But in the least fit these air filters. Perhaps the manufacturer should have to worry about to develop a product that is suitable for different types of heating systems, it will not be impossible.
But now on this article: Air filters are not only for children's necessary but at certain seasons probably for all rooms. For example, when the snow melt, the particulate pollution in the air is higher. Then such a product is thoroughly recommended to relieve the body health, especially the respiratory system. Wonders, however, one should not expect from this article. While he reduces the dust or particulate air pollution in the rooms, but only to a certain percentage. A complete discharge is not given so sure.
Since the filter is relatively inexpensive, you can maybe buy him a trial basis. Ie., You should first order a copy, in order to test whether it is working in the house at all radiators. You also have to anticipate that the relief for their own health is still not enough.