alt Hacker NewsYes, but no. We have historic, sometimes even mediaeval buildings. They weren't built with the current energy efficiency in mind. Leaving the bathroom door open after showering. Not putting furniture flus against the wall are simple measures you could take that don't need structural adaptations. I know there are plentiful of technical options but some common sense goes a long way.
It infuriates me to no end that we are expected to put up with building design and technology from 1900 as a consequence of the obsession with "property values must go up" (notwithstanding the property) and a healthy helping of "regulations are only ever added to, everything old is forever grandfathered".
Like, central ventilation is not magical unobtainable technology. Simple heat recovery even vastly improves heating costs in a way insulation never can.