A very important thing about windows is their ventilation capabilities. In the past, most of the panel high-rise apartments were built and ventilation was intended to take place through futer wooden type windows, where there were no sealing rubbers and there were small gaps between the sashes and the window, where air exchange took place independently. Today, most people have replaced these old windows with PVC windows, which are very airtight and do not have any air exchange through them, and that's how all the big problems started. Window frames start to mold, moisture condenses on the lower part of the glass, stuffy air forms in the room, clothes in closets start to mold, etc. How to avoid all this and not live in a musty and damp room?

Of course, the easiest way is to make windows yourself, but sometimes people are too lazy to do it, and also the stressful rhythm of our life - we get up early in the morning and late in the evening we are at home, prevents us from doing so. The only and cheapest solution is to equip the windows with forced ventilation devices, which can be incorporated both in your existing PVC window and also by ordering new windows from the manufacturer. Our company offers VENTAIR window ventilation equipment with a self-regulating membrane, which even automatically adjusts the air flow in the room when the humidity and temperature in the room change. It provides an independent and even exchange of air in the room and prevents the formation of mold and the appearance of condensation on the glass.

All these additional ventilation devices offered by many manufacturers, including our offered VENTAIR company, have several small disadvantages. First, during a strong wind or storm, they allow too much fresh air to enter and, therefore, coolness, because their manual closure does not ensure hermeticity, so it is not recommended to put them on the last floors of multi-story buildings and private houses that are in an open and open place, without trees nearby and next to buildings. Second, with the installation of ventilation, the soundproofing of the window deteriorates, which is a very delicate matter, especially in cities where there is a lot of traffic, people and the noise caused by dance clubs and bars.

Third, it draws not only fresh air into the room through a narrow opening, but also dust and dust cause damage to the window fittings, as the mechanisms of the upper transmission of the windows are often damaged, which accumulate over the years and to the fittings transmissions, because of course no one remembers the cleaning of the 4 hygrosters. Fourthly, if there is a very large temperature difference, especially in winter, between the outdoor air and the indoor space, say -20 degrees outside and +20 degrees inside, condensation may start to form on the ventilation inside, which may start to drip on the inner window in small quantities, forming small puddles of water.

With all this, we do not want to say that ventilation should not be installed, but we want to pay attention to the fact that one of the side effects that we have listed, which this ventilation can cause, should be taken into account. And it has not been said that these side effects develop for everyone and that they interfere with everyone's life, not to be, but the possibility exists and therefore it should be taken into account when ordering them from the companies that install them.