Residential Ventilation Handbook - What's the Difference?

The residential ventilation handbook was originally published by mcgraw hill. When it got sort of out of date, i self published the version two. And i'm actually working on version three at the moment because it has a lot of code citations in it. It seems to me that ventilation should be as carefully designed as other h v a c systems. So like manual figures out all the loads on the house to deliver heating and air conditioning two rooms well, ventilation should do the same thing.