> You have to have a system to cycle in fresh air in a way that it heats/cools it with the air that is leaving.
This is quite nice regardless. Houses are unlikely to be so drafty that the air inside is always fresh, and a real ventilation system will deliver fresh, filtered air all the time.
> You also need a makeup air vent for things like a stove hood.
You need this anyway, at least in CA, if your hood exceeds 400cfm, and it’s probably a good idea regardless. Sadly, high end hoods seem to mostly have way too much airflow, and decent makeup air systems are rare and complex.
This is quite nice regardless. Houses are unlikely to be so drafty that the air inside is always fresh, and a real ventilation system will deliver fresh, filtered air all the time.
> You also need a makeup air vent for things like a stove hood.
You need this anyway, at least in CA, if your hood exceeds 400cfm, and it’s probably a good idea regardless. Sadly, high end hoods seem to mostly have way too much airflow, and decent makeup air systems are rare and complex.