Ventilation for home and apartment

Ventilation in a private house is necessary like running water and electricity, because every home owner wants to breathe clean and fresh air while in his home. At the same time, I want cold drafts not to walk around the house in the winter cold, and not to languish in the heat in summer. Let's talk about how ventilation is calculated and installed in a private house in such a way that you can feel comfortable all year round.