I think it's the case that if you see no change in the temps after eight inches keeping the fuel constant, that should work both ways Eben and it becomes a zero gain or loss. After eight inches, you're just wasting insulation and getting no change in your performance. You could certainly prove it if you have enough insulation and you want to take the time to do the experiment. I spent quite a number of days on it.
And Ed, it's always good to see you out there.
Where are we going and why am I in this basket?