That's an amazing project! I'm blessed to be in such company. Seriously, I use open source stuff and I prefer to do business with such relatively wise people. If you want a beta unit, email me and I'll put you at the top of the list!
That's very kind, but I have all the (SR)MHRV units that I can reasonably fit!
FWIW the email address on your site page is bouncing for me.
Please do add my email (in my profile here) to a low-volume mailing/updates list if you have one.
And if my limited experience of bringing an open hardware project to market might be of help, let me know!
Small note: the older single-room unit we have with the fan on the outside can ice up and make horrible noises then stall at a few degrees below zero (here in London UK)... B^>
Also: as the creator of a project called OpenTRV, I cannot but help admire your taste in naming! B^> B^>