I can't help think that these mandates are being made by people who are out of touch with everyday people.
If someone can work out a more compact system that could perhaps go in our loft then that might work, but that would probably require roofing work to accommodate the largish ducting that you would need.
I’m all in favour of decarbonising, but it needs to take into account how mostbof is actually live. For example, I’d love an electric car, but we don’t have off street parking, so can’t guarantee charging up overnight.