Hi there,   The colder months are here again and my MVHR is filling with water again, so it's about time I found out what's going on.   The bottom-left quadrant of the unit is the external outlet, and that has a condensate drain which seems to be working fine.   However there is plenty of water collecting, very cold, at the bottom of the bottom-right quadrant, which is the external inlet. This side doesn't appear to have any form of drainage designed into it.