When using floor heating pipes made of plastic, it is important to note that the durability of the pipes is affected primarily by the duration of action of the stabilizers contained in the plastic. The service life of the stabilizers is significantly shorter than that of the base material, which is subject to a different aging process.

As a result, it may exhibit less elasticity and become brittle.

Older floor heating systems in particular, which were operated at high flow temperatures (around 60° to 70°C), age much faster than modern ones. Typically, floor heating pipes are made of polyethylene (PE), cross-linked polyethylene (PE-X), polypropylene (PP) - including co-polymer polypropylene (PPC) - or polybutylene (PB, also known as polybutene). The calculated service life of a floor heating system is given as 30-50 years.

However, the real key point in terms of compatibility for the human organism is that the heat transfer fluid used consists of toxic chemicals that are capable of transporting heat. Among others, monopropylene glycol is used. This is a highly hydroscopic liquid (moisture-binding) with the chemical name 1,2-propanediol. It is produced from propylene oxide and is approved in the EU as a food additive (bears the designation E 1520).

Another shocking fact may be that 1,2-propylene glycol has recently been used as a feed additive for dairy cows. Propylene oxide has been shown to be carcinogenic and mutagenic in animal studies.

The electromagnetic radiations projected from the interior of the earth to the surface excite the chemicals that are in a closed circuit in the tubes of the floor heating. Individuals exposed to these radiations during the night may react very differently. An 8-month study conducted in France on about 90 people showed surprisingly large differences in relation to region.

Thus, subjects in the south of France reacted quite differently in contrast to subjects in the north of France. At baseline, 83% of subjects showed no venous complaints, but 17% complained of lower limb problems, especially heavy legs (20%) and pain (5%). There was a tendency for complaints such as heavy legs to increase.

In medicine, it is now considered proven that more and more patients complain of undesirable side effects: in particular, people who have moved from an apartment with "normal" heating to one with floor heating often react in a short time and complain of night cramps and poorer sleep.

From a biophysical point of view, this is clearly understandable: The excitation of the chemicals by the electromagnetic earth fields affect, among other things, the erythrocytes (red blood cells), since they contain, among other things, iron-containing protoporphyrin.


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