Why is it essential to put your windows in winter mode since January 1st?

Why is it essential to put your windows in winter mode since January 1st? | March 16, 2025

It is essential to know if winter mode on your windows is a myth or if it really saves money on heating.
It is essential to know if the winter mode on your windows is a myth or if it is a real help to save money on heating. Knowing this element will bring you various benefits.