Hello everyone,
I am having a house built, and currently the plumbers are installing the pipes. I have received a quote from them for a Hydraulic Energy Station (HES) for around €500.
The house will have underfloor heating and a heat pump. Is an HES useful in this case? Especially since we have relatively soft water here anyway.
How often does underfloor heating need to be refilled? Is it possible to do this yourself? You can buy demineralized water compliant with VDI 2035 standards online.
This question concerns only the heating system, not the general domestic water supply.
I am having a house built, and currently the plumbers are installing the pipes. I have received a quote from them for a Hydraulic Energy Station (HES) for around €500.
The house will have underfloor heating and a heat pump. Is an HES useful in this case? Especially since we have relatively soft water here anyway.
How often does underfloor heating need to be refilled? Is it possible to do this yourself? You can buy demineralized water compliant with VDI 2035 standards online.
This question concerns only the heating system, not the general domestic water supply.
B
Bierwächter6 Feb 2026 18:43We have PH 13.5, and during our heating system briefing, the installer told us to top it up with tap water using a hose.
We might still consider a water softener, but not because of the heating system—rather for cleaning purposes. However, I need to research this further since I drink a lot of tap water.
If I were in your position, I probably wouldn’t get a system.
We might still consider a water softener, but not because of the heating system—rather for cleaning purposes. However, I need to research this further since I drink a lot of tap water.
If I were in your position, I probably wouldn’t get a system.
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