Decision for a heat pump

The ceiling and windows have good insulation. The heating is needed that high because there are 2 elderly people living in the house who like it very, very warm (which I don’t want to take away from them at their age and health).

What do you mean by thermal balancing? There is no basement?

The outbuilding is only used (e.g. plants are kept there in winter) and is not regularly inhabited. In one room it can happen occasionally that a guest stays overnight, then this room is heated more.

In the future, it may also happen that, for example, a caregiver is needed. She would then sleep there, and in winter I would also need the outbuilding (that room) heated. Therefore, maybe a larger dimensioning wouldn’t be bad, I just think so.

What do I need to consider regarding the flow temperature? What regulations concerning the refrigerant R410A will come in the future? Is it still sensible to build a new system with it?

A question about the heat pump IDM ALM Aero 10-24: It is said that this heat pump is modulating and can vary with regard to heating: Wouldn't this then be the most suitable one?

Refrigerant R32 is relatively new and environmentally friendly. According to the specifications, insulated and triple-glazed, a Daikin Altherma 3 is sufficient.

Okay, that also explains the high annual consumption. I would personally have the heating load calculated by an engineering office using the specified room temperature. I would be surprised if significantly more than 10KW came out. I probably wouldn’t use the radiators in the outbuilding either, but rather install a split air conditioner. They usually heat with a good SCOP, so they are not really expensive to operate. Alternatively, design the radiators there for the lowest possible flow temperatures.

Google thermal balancing. Then do it in winter.

Question again: What does it mean that the gas heating will soon be defective? Yes, winter will be expensive this year if it continues to be used. However, a significantly oversized heat pump that is poorly operated will be at least just as expensive.

Regarding the heating load, I was already on the phone today arranging for a civil engineer to come by this week and calculate it.

Two installers I spoke to said that they calculated the heating load based on the sqm, wall thickness, insulation, windows, room layout, heat emission system, and consumption, and both arrived at 17 kW.

So, heating the outbuilding with air? Wouldn't it be better to insulate and expand it there? (which will inevitably have to be done in the future anyway => see care assistance)

I checked again today: according to your information, wouldn't the IDM Aero SLM 6-17 KW be the most suitable?

Or what does this modulating mean? As I understand it, it means that it adjusts its output to the conditions. Or am I mistaken? If so, how would one interpret that?

One more question: Why does a moderately operated heat pump have a shorter lifespan?

(Sorry if these questions may seem simple to you. As I said, I’m just a layperson)