@tk (water heating was / is integrated with heating water for the radiators, and changing *that* would have required too much work and expense. the quote for an air-water heat pump were, as I said, extortionate, so we added air-air heat pumps, but they are sized to work *together* with the radiators, not instead of them)
(one day we'll have a fully electric house, but it will need to happen through gradual changes)
(and yesterday, since the sun was shining and there was some warm wind, it was a bit too warm to turn on the heating anyway)