Modernisation of floor heating systems

Many owners of older single and multi-family houses, and also tradesmen ask themselves how long the multi-layer composite pipes installed there will last or whether they need to be replaced. Plastic heating pipe installed before 1988 are generally considered not to be oxygen-tight; the entry of oxygen into the heating system can lead to corrosion in other components. A space-saving and very economical alternative to the costly tearing open of the floor and a new installation is the installation of wall heating modules.

Older - not oxygen-tight - multi-layer composite pipes (MLCP) can be a reason for corrosion in the carbon steel of heating systems and heating pipes. However, the renovation of underfloor heating systems installed before 1988 is generally very complex and expensive, as they are mainly laid under the screed. If they are completely replaced, the entire floor and screed must be removed and re-laid at great expense in terms of time and money; rooms cannot be used for a long time and a lot of dirt is produced.


Tailor-made wall heating for cost-effective renovation

Wall heating modules offer a sensible alternative. This variant of panel heating offers all the advantages of underfloor heating, from comfort and energy efficiency to economy. The wall heating is suitable for both sophisticated new buildings and for the high-quality modernisation of old buildings. However, it offers considerable economic advantages, particularly in renovation projects, as the floor remains intact and installation can be carried out very quickly.


The wall heating modules (several modules can be connected in series depending on the heating load requirement) are simply fixed on a mounting rail and attached to the wall and can then be wallpapered or painted over. In this way, building owners can save costs when renovating their old floor heating system. As the oxygen-tight PE-RT/AL pipes are already integrated in the module made of special mortar, the wall heating module is an economically attractive alternative for building owners, but also offers noticeable advantages to fabricators due to the time saved during installation.


All rooms can be heated in a space-saving and very economical way. The heat radiation in the IR-C spectrum is perceived as particularly pleasant and offers users maximum comfort. With its dimensions (62.5 cm wide; 2.5 cm deep; 75 cm, 125 cm, 200 cm and 250 cm long), it fits into every typical drywall stud frame. Alternatively, it can also be mounted directly on a load-bearing wall. 


Basic tips for developers

Plastic pipes according to EN DIN 4726 generally have a considerable service life. The minimum requirements according to EN DIN 4726 provide a quality standard with a high creep rupture strength plus a corresponding safety reserve. This means that professionally installed and undamaged plastic pipes are designed for a very long service life. Since underfloor heating systems - the most common area of application for multi-layer composite pipes - have low system temperatures, the pipes are also usually stressed below their load limit.


For building owners, developers and other interested parties, the Bundesverband Flächenheizung und Flächenkühlung e.V. (BVF), of which SANHA is also a member, has compiled further important information for building owners, developers and other interested parties. The complete document as well as further information on the topics of wall heating, underfloor heating, panel heating systems, funding opportunities and renovation can be found at