Gervase, (Waxwing Energy - low energy domestic refurbishment assessor and consultant) welcomes you to his Enerphit certified passive house retrofit of 1838 cottage with subsequent 20th and 21st century extensions.
It's an example of what is possible with a very deep retrofit (which might not be for everyone).
External Insulation, floor insulation, triple glazed windows, roof insulation, thermal bridge details, very airtight, PV, MVHR, battery.
Having done it to a previous house I could not go back, Low carbon running costs, air quality and comfort.
It was very expensive. Lifetime home. Not for everyone.
Approximate energy savings:
Even without a heat pump and using electricity only before price increase it cost £400 a year for all fuel. 85% reduction of energy on previous situation.
Got modernised in process, walls now dry and safe, more comfortable.
Who did the work?
I (Waxwing Energy) designed and project managed, local builders and various trades did the work who i'd reccomend.
Heat pump coming soon. I rejected heat pump at the time (2018) because not convinced of technology then.