Compressor broken after 6 years (Ecoforest ground heat pump / well construction Heth)

That of course raises the question of why nobody checked the high frequency during maintenance. Probably a specialist similar to my heating engineer. "In case of doubt, they increase the flow temperature here and the rest is done by the thermostat" -.-

How was actually your electricity consumption, the yield, and the resulting annual performance factor?

The compressor is not broken now because we did not maintain it, but probably because it was incorrectly sized and configured.

It could have been discovered earlier if the heating system had been maintained regularly. Thus, something might have been saved. That the heating system is incorrectly sized - we don't need to argue about that.

The compressor is not broken now because we did not perform maintenance, but probably because it was incorrectly sized and configured.

...even if that were the case... No maintenance contract, no claim. It's like with a car, no warranty without service.

…even if that were the case.. Without a maintenance contract, no claim. It's just like with a car, no warranty without service.

The warranty period is already over anyway. Even if we had done regular maintenance, we would no longer have any warranty.

So I recently had a conversation with my chimney sweep, who is also an energy consultant. He said that generally you can calculate a lifespan of 15 years for a heat pump. You shouldn’t expect much longer. Even a refrigerator is broken after 15 years or then technically and visually so outdated that you replace it. I wouldn’t assume a lifespan of 30-40 years like with an oil heating system for a heat pump. And repairs on a heat pump are more difficult and also significantly more expensive than on an oil burner. In summary, one can say this about the heat pump: expensive to purchase, expensive to maintain, and only effective with elaborate heating systems like underfloor heating. Personally, I don’t like underfloor heating at all. Except in the bathroom, I don’t have that kind of heating either. I find this constant foot warmth uncomfortable. It’s also slow to respond.