I just bought my house and it stays rather cool. However I've found while painting that the flow of air through the house is limited. My vents are all on the base board/wall if you can imagine. Not sure if it matters, however some of these vents have no ventilation in them at all. In particular the bedrooms. Don't get me wrong it's cool temperature wise throughout the house naturally. I am generally concerned when it comes to winter. I would like to improve this, how can I?
I also noticed that in some spots the vents were actually blocked, could this be to improve the flow?