[open_erv2]

Yeah that would probably work, it's just a matter of cost. A lot of people balk at $700 CAD, the eventual price is supposed to be $1300 for a pair, you do that and you are looking at a lot of $ for the flow and energy recovered.

The numbers are the number of versions before it stabilized, so 12 tries for the window mount, 4 for the through wall. It took a while.