Why do you need ventilation systems in apartments, private houses, cottages?
Have you ever noticed how much your well-being depends on the quality of the air you breathe? In the fresh air in the woods, in the park or by the sea, you feel stronger, more energetic, more cheerful. And in a closed room that has not been ventilated for a long time, you often have headaches, weaknesses, and you want to sleep all the time.