-
what an odd comment
first - we're in a thread full of high priced reno recommendations.
second - what is obtainable/realistic is a shifting dial, influenced by a range of economic and policy levers. We need to first decide on what is necessary and good (which this undeniably is) and then decide how to get there.
third - i never claimed the way i'm going about this is the best way for most people to do it
fourth - do you pop into someone's 10k superbike build with snide comments about how it's unaffordable for most people?
Do you think ASHP is unobtainable for people here in the UK but seemingly fine for people in others countries like Italy or Lithuania? Or is it just the way I've gone about using an architect, etc?
i also mentioned insulation though
we've engaged a Certified Passive House Designer and Architect who has used SAP, PHPP and Psi-Therm energy modelling to outline what improvements (ie, insulation and draught proofing) are needed to transition our victorian terraced to highly energy efficient and heat pump ready
What @tenners says about ACH is correct.