[ArchitectAnon]

>And let's not forget, a lot of traditionalist design took into account a world without HVAC and other hacks. If you want energy efficiency, looking to solutions that tackled the problem in a more fundamental way is a good thing, rather than papering over the problem with technology.

A lot of these houses were heated with a coal fire in every room, they are completely uninsulated and sitting anywhere near the window in the dead of winter would be very cold! There is something to be said for applying modern passive solar design techniques, insulation and airtightness coupled with heat recovery ventilation. Of course, this does mean you can only have big Georgian style windows on south(ish) facing facades.