ᐅ Experiences with concrete core activation

Hello,

we will soon be building our house with very low heating demand (close to passive house standard). Since we want tiles on the ground floor, we plan to install underfloor heating. Our architect has now suggested concrete core activation as a more cost-effective alternative. Until now, we had never heard of it.

Is there anyone heating their house this way who can share their experiences?

The heating system will be an air-to-water heat pump with controlled residential ventilation, plus a masonry heater.

Schwabe23 schrieb:
Our architect has now offered us concrete core activation as a more cost-effective alternative.

Check other threads using the keywords "concrete core activation" (and also "Swedish slab"), you’ll find a lot of useful information there ;-)

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https://www.linkedin.com/company/bauen-jetzt/

To put it mildly, absolute nonsense in our area.

What is the point of having two heating systems (air-to-water heat pump and masonry heater) in a nearly passive house?
If the house is really well insulated, don’t install underfloor heating at all, and especially no stove. Just provide a little warmth through the air (air-to-air heat pump).

To be honest, I have never really understood what you save with the Swedish slab. €1500 for the screed or what?

If you truly want a Passive House, then forget about the heating system and save your money. Use a split air conditioning unit combined with a fully utilized photovoltaic system instead.

Thank you. I was missing the term "Schwedenplatte." Apparently, this system is much better at buffering temperature fluctuations than underfloor heating. In summer, it also provides a cooling effect. Unfortunately, there are two fixed points for us: a stove—because we had one in a rented apartment before and really miss it—and low-maintenance fleece flooring on the ground floor, but it should feel comfortable underfoot. Perhaps an electric underfloor heating system could also be suitable as support if we end up using the stove for more than just ambiance? Thanks for the tip about the split unit; I will take a closer look. Our architect also suggested something similar combined with infrared heaters. There are just too many options...