ᐅ Using Geothermal Energy Without Radiant Floor Heating

Hello dear forum!

I would like to use geothermal energy as a source, but I am not a big fan of underfloor heating. Is it necessary to install underfloor heating to use geothermal energy, or is it also possible with regular radiators?

The idea behind using heat pumps is to combine the lowest possible supply temperature (26°C (79°F) is usually sufficient) with a large heat exchanger surface area. This way, a well-insulated house can still be heated effectively even under adverse climatic conditions for the heat pump.

Large surface heat exchangers can also be wall heating panels; they work the same way as underfloor heating but are installed within the walls.

Standard radiators require a relatively high supply temperature to heat a house; high temperature means a small heat exchanger surface area, while low temperature requires a larger heat exchanger surface area.

You can easily use a geothermal heat pump with radiators. The efficiency is somewhat lower compared to a system with underfloor heating, but still good. What matters is that the system is properly designed and hydraulically balanced. Consult a heat pump specialist to ensure everything fits together correctly.

WPC Rubigen schrieb:
The key is that the system is properly designed and hydraulically integrated correctly.

That is true, and I fully agree with the previous poster. This cannot be done alone; a professional is needed here, and they usually handle it well.

That is correct, this also works with radiators. The heating system must function well, and for the upcoming winter period, the supply temperature should be limited to a maximum of 40-45°C (104-113°F). At the same time, disable the night setback and turn all radiators fully on. Once the house is warm, then considering a heat pump is possible. It is important to obtain current quotes.

Yes, this is possible without underfloor heating, but special radiators designed for heat pump operation must be installed. Although this is not ideal, it does work. You should also consult a heating engineer, who can calculate the heating load.