80m² bungalow KFW 40. Underfloor heating everywhere.

Hello,

which system would be most worthwhile for me:

- 80m² bungalow Kfw 40
- underfloor heating throughout the house
- work from home, so 24/7 in the house
- new building

Is there any worthwhile combination? Heat pump with photovoltaic? BKHW?

Air-water heat pump or, if possible, also gas and ST... keep the investment costs as low as possible given the size and energy standard.

In short: Apart from missing information, the construction project is so small that the heating costs should be very low with the insulation standard, regardless of which system is used. One just must not oversize. I imagine here that a gas condensing boiler with modulation actually already has too much capacity. However, there are some very efficient and affordable air-to-water heat pumps (one Panasonic known from other forums) that have low capacity/modulate and are inexpensive to purchase. Otherwise, it also depends on the "green conscience" / the play instinct regarding what one chooses (e.g., photovoltaics + storage + heat pump).