Using the Thermix warm-edge edge spacer and the argon gas inside the glazed glass package.

Choosing a glazed glass package LOW-E + argon or 4S+argon and the double-opening ironware system.

The appropriate insulation of the exterior walls, as well as of the joinings between them.
Repairing the sills within 48 hours after the window installation.

Widely opening the windows and aeration whenever necessary, especially in the first season. Function to the outside temperature, the glass sheet temperature, the humidity in the room (there is a special table) it is recommended to keep a minimum temperature in the room (starting with 21°). It is also recommended to uniformly heat all of the house’s rooms.

The heater should have as many units as possible, and the hot air should pass along the window, if possible.
Aeration at least 2 times a day (in the morning and in the evening) for at least 15 minutes.

Appropriate setting of the sills, so as not to cover the heaters and removing the curtains as often as possible.