Heat recovery has something to do with the roof space ventilation system! Hence the unit is installed upstairs! While I agree about the importance of electrical efficiency! Given the high capital cost the more you can get out of it, particularly if it reduces capital spend on other domestic infrastructure, the better!
You only have to watch grand design uk to see that the ideal is more important than the economics for many home builders in the uk and elsewhere!
CFU Price at posting:
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