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dbr
That's really interesting. This bit confused me as to how you're meant to apply if you're getting a whole house refurbed including insulation and an ASHP in place of a gas boiler:
"Your property must have a valid Energy Performance Certificate (EPC) with no outstanding recommendations for loft or cavity wall insulation."
https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible
...but you're still applying for the grant despite getting everything done at once?
I'm not thinking that PV would heat the house under all circumstances. I think we'd have to rely on a combi boiler a bit, but we could substantially reduce our use of it from the PVs. What I'm struggling to understand is what an electric wet-UFH system looks like. Where does the element go? Is there a buffer tank and an expansion vessel? How big are they?