The Boretti plasma filters release pure, clean air into the room and work with plasma technology. The air is thoroughly purified and what remains is extremely clean air. The plasma filters have passed rigorous tests and are real air purifiers. Even if you are not cooking, you can turn on the hood at the lowest level. With the Boretti plasma filters, it’s important to regularly turn them on - before and after use of the hood – for 10 minutes at the lowest level. This allows the air in both the kitchen and the room to be freshened and the plasma filter to clean itself. The filters are easy to install and include all the necessary connecting materials for installing the filters. The plasma filter auto-activates the moment the hood is turned on. The impure air is purified safely, after which the filter releases the air.