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I looked at it for a work project (I do development). They are really great bits of kit but do require a pretty good passivhaus rating to work efficiently enough and from what I remember, they didn't have huge capacity so were better for the new build flats we were building. That said i did go round an example of a retrofit flat with it installed and it worked well but they had done a full passivhaus job on the place.
This was 2 or 3 years ago though so maybe the tech has moved on
punkture
@ffm
Has anyone got experience of the Nilan Compact P? It seems to be an MVHR and heatpump all in one package so that the remaining heat in the waste air is the source of heat to the heatpump.