They do select ‘funny’ science, but not in any way to ridicule it, I think, but to highlight that science can be useful and goofy at the same time. And also because it’s fun, I guess :)

Wo hast du es aufgenommen?

Auf Höhe Dresden nur alle paar Jahrzehnte.

There are calculators online where you can enter your house/room details and get an estimate if any upgrades would be needed to make it reliably comfortable with a heat pump. I don’t know any for the UK specifically tho. Maybe those estimates are too climate/building code sensitive