Take my Ventilation Training and learn all that I know about this complex topic: https://buildingperformanceworkshop.c...

I only recommend ERVs for very airtight homes (less than 2 ACH50), and in those cases balanced ventilation is the ONLY way to exhaust from bathrooms. More coming on that for those who are scratching their heads.
If you DO need an ERV or HRV (hear the difference at    • ERV vs. HRV Mythbusting: Which Ventil...  ) then where do you put the supply and exhaust ports? How many CFM should they each push and pull? Here's my simple breakdown of what you'll need to consider.

Consult with Corbett on any home at: https://buildingperformanceworkshop.c...