Alright kiddo, do you know what a house is? You know, the place where people live in? Well, we want to make sure the houses are good and comfortable for people to be in. So, we have this thing called ISO 13790, which is a set of rules that helps us figure out how to make the houses better.
Basically, ISO 13790 helps us to look at things like how much heat enters and leaves the house, or how much light comes inside. It also helps us to design better windows, walls, and roofs so that we can keep the house warm when it's cold outside, and cool when it's hot outside.
And why do we want to do this, you might ask? Well, because we want to save energy and save money too! If we can make the house better, it will use less energy from things like heaters or air conditioners, and then we won't need to pay for as much energy.
So, to sum it all up, ISO 13790 is like a special guide that helps us make houses that are more comfortable for people to live in, and that also saves energy and money. Cool, right?