Another new one on me – the loft heat pump takes heat from the loft and does something useful with it.
They will be noisy though, may require sitting on firm foundations and be a bit tricky to get into the roof space.
Whilst looking up info on this I discovered this site which looks at case studies.
In particular I thought the solar hot water report was interesting – that people don’t always use the free hot water that the systems make and so as with all eco systems it’s worth considering whether it’s right for you.
Grand Designs is running a campaign about The Great British Refurb – This campaign can help you live in a low energy home that is cheaper to run, more comfortable to live in and massively reduces your carbon emissions.