External perimeter insulation floor slab, basement mold risk

WP ~19ct/kwh? ??? :rolleyes: But electric, not thermal... You’re basically forgetting the annual performance factor. 19ct is correct if you heat purely electrically with a heating mat.

Well - the statement about what the plant engineering has to do with the transmission heat loss of the building envelope in relation to the costs does interest me now, even if it's OT :D

I also find your discussion very interesting.

Well - the statement about what the plant technology has to do with the transmission heat loss of the building envelope in terms of costs does interest me now,..

Read the above again! Demand is not consumption (kWh). Otherwise, heat pumps would be a really bad business.

even if it's OT :D

Someone who is familiar with the overall context will certainly evaluate that quite differently ;-)

best regards

Hmm, but you have confused consumption and demand. Ultimately, it is only about the consumption of thermal kwh. The fact that these kwh are not directly readable on your electricity/gas/district heating bill because the annual performance factor/efficiency/line losses influence this depending on the system must be taken into account. However, you gave the impression that a heat pump would result in energy costs that are four times higher, which is balanced out by the "pump performance," making the systems relatively similar in terms of the costs of thermal kwh.

Hmm, but you mixed up consumption and demand.

If I were you, I would think it over again ;-) Otherwise, I would probably have failed in my profession ;)

best regards