Passivhaus is hard to retrofit but we can do much than we do, at relatively little cost - just a few draught excluders and more insulation and lagging would be a start. Block up unused chimneys and spaces between floorboards etc. Educate people about efficient use of energy.
All better than just throwing public money at the energy companies.
Passivhaus Hmmmmm. I wonder if a major part of energy (and health) issues is trying to deal with expectations. House I grew up in had only one central open fire, if we were cold we put on more clothes. Bedrooms had ice on the inside of windows in winter, but we were warm and snug in bed, I honestly cannot remember being that bothered about cold.
House had no insulation, all windows and doors were draughty, which still did not stop my mum opening the windown in mid winter to get some "fresh air"(double glazing did not exist), but mouldy walls prevalent in some modern houses badly designed for saving heat and not healthy living just never really existed.
Recently had a conversation about this with my mates all similar in age, we found that we all had one thing in common. Despite living in well inuslated modern houses, we leave the bedroom windows open at night for "fresh air"
I have built a passivhaus, it was ok...ish, you need mechanical heat recovery to ensure proper air changes, and I had solar panels etc.
I do like passivhaus, as long as it means the house doesnt go heading off down the street
