How to defog car windows without air conditioning or rags: the homemade method that works in seconds

The key is in the combination of two factors. For one, the soft hot air that is directed at the glass prevents the surface from remaining cold. On the other hand, the entry of cold air from the outside drags excess moisture to the outside, cutting the condensation cycle in the bud.
Advantages of this method compared to other solutions

This system offers several benefits over the most popular alternatives:

It does not depend on air conditioning, so it is ideal for older cars or those that do not have that system.
It saves fuel, as the air conditioning compressor