Construction costs are currently skyrocketing

Oh man... actually don’t want to digress, but ok, just briefly, then please BTT. It is (or rather we are in the process of) a renovated old building. Calculation was at 7.9KW. An 8KW would be too tight, the 9KW was almost the same price as the 13KW, especially since a 45% BAFA subsidy also plays a role. Availability is also uncertain for anything between 8-12. At least the large one was immediately available except for the outdoor unit. In addition, it has higher efficiency at cold temperatures, meaning the supplementary heating or the "heating element" only starts at (now I have to estimate because I don’t remember exactly) -10°C, with smaller units it starts earlier. Furthermore, the system should also be able to cool in midsummer, which smaller ones probably can’t or at least not with this efficiency. All this information comes from the consultation with my plumber. I felt very well advised by the plumber, I also know him personally and consider him a competent partner. I don’t think he’s trying to take me for a ride, otherwise he won’t get a beer at the housewarming party.

He’s not necessarily trying to pull a fast one on you, but rather he doesn’t know any better himself or just plays it safe because you know each other... So he mainly wants to avoid you sitting in the cold place. If that thing then gives out after 10 instead of 20 years, he tells you not to mess around too much with that part....

To get back on track... If anyone needs to order electronic supplies soon, I have a little highlight for you: FI circuit breaker 4-pole, 40A from ABB currently priced at about €250 each. Although you can find hardware stores and shops online with prices around €25, none are available at these conditions.

Aha, well that sounds different. I would have definitely chosen differently, but okay, it's your thing.

Aha, well that sounds different. I would definitely have chosen differently, but well, it's your thing

Nowadays, people are just glad to get a heat pump. And if it has to be quick, like with the renovation, you just take the second-best in the world :cool:

Aha, well that sounds different. I would have definitely chosen differently, but well, it’s your thing

No problem, everyone as they like. For me, the small financial difference plus availability were decisive. I will create a thread in the forum about our project after moving in (planned for December 22), to give the purchase, the renovation, and everything around it with all its ups and downs a story. But the way is still long.