- Absolutely quiet and outdoor and indoor units. Only the sound of air is heard! The outside one is a little more audible, but it works even quieter than my nofrost refrigerator.
- In the configuration, a carbon filter is declared and batteries, which, as it turned out, alas, are not present. Batteries type AAA. 2 pcs. Better to buy. And the installer was looking for union nuts for a long time on the track. If anything, they are protected in the external unit.