Newly built single-family house KfW55 standard - How to heat?

What about an air-to-air heat pump?

Great thing. But only suitable for passive houses at most. And the users must also behave accordingly. Just google the problems with Proxon - it's basically the cheapest heating system you can install. Absolutely unsuitable for normal houses.

Great thing. But suitable at most for passive houses. And the users have to behave accordingly. Just google the problems with Proxon - it’s just the cheapest heating system you can install. Absolutely unsuitable for normal houses.

Yes, I have often read the same. One of the general contractors we are currently in intensive talks with recommends the Proxxon if the entire concept is coordinated accordingly. He doesn’t care at all which heating system we choose and can therefore look at the whole thing quite neutrally. We have a roughly 60 sqm large and open living/dining/kitchen area with a gallery. A panoramic fireplace is planned for this area. In the bathrooms, an electric underfloor heating system is to be installed. The house meets the energy efficiency standard 40 Plus. We are currently seriously considering the Proxxon...

There must definitely be a reason why such a giant as Stiebel Eltron is investing in Zimmermann (= manufacturer of Proxxon).

Also, a lot of the big prefabricated house manufacturers (Weberhaus, Bien-Zenker) install Proxxon as standard. They surely wouldn’t do that if the system was junk and they expected many complaints...

That’s because it simply allows you to make more money

I’ve already heard from many sources that overall it is the most effective and cheapest system. In addition, there is a short response time and a cooling function.

Only if a house fits it and the area and user behavior are right. It’s like the manufacturers’ fuel consumption figures.

An electric underfloor heating is supposed to be installed in the bathrooms.

Why is that?

Only if a house fits and the area and user behavior are right

Possibly also use in a 40 plus single-family house - provided the overall concept is coherent -, right?

Why is that?

- Warmth on bare feet
- shorter response times compared to water-based underfloor heating, since the heating elements are laid on top of, not in, the screed
- also more economical in consumption than the Proxxon (fast heating with the Proxxon is only possible with the use of the additional heating element in the ventilation outlet)
- demand-oriented control via timer

At least that's what we were told and that's how we partly found it again on Google...

Per LLWP is only marketing gibberish. When I already hear "short response time"..

Per air-to-air heat pump is just marketing talk.
When I already hear "short reaction time"..

short is always relative...
Compared to a conventional underfloor heating, however, the shorter reaction time is true.