Based on Mid and far-IR data of a complete set of Seyfert galaxies we analyse the Spectral Energy Distributions (SED) of these objects. These SEDs can be separated into three thermal emission components. This separation can be used to introduce some sort of spatial resolution in the inherently low resolution ISO data. It can also be applied as a method for detecting galactic disc components in high-z objects. The separation into emission components allows the study of these independently. In particular differences in the emission of the type 1 and 2 Seyferts can be seen in the warm emission component supposedly originated in dust heated by the nuclear source. The colder components tell us about the extended host galaxies.