Why is it essential that your home features a ventilation system?

In well-insulated buildings, air circulation is very low, making a case for using ventilation systems for living spaces.

It often happens that when renovating a flat or a house, people completely forget about ventilation, which is a big mistake because during renovations we tend to replace the windows, the insulation etc., and as a result the building becomes hermetically sealed. It is therefore essential to install a ventilation system.