Interestingly, these tests were done with the Ecofan at the front of the top plate, rather than at the back, as per the instructions, that came with ours.
I am firmly in the camp of the belivers, as in our boat, there is a definate improvement, in temperture, towards the back end.
Our stove is at the front, and on the same side as the corridor. On the door between rear bunks and trad stern, engine ole, is a full lenght mirror, which condensates, after lighting the stove, it drys much quicker with the fan than without. (40-45ft away)
Bod