During cooking, and in particular when frying, vapors are given off which consist of a mixture of steam, particles of fat and odors. If air in the room is not extracted or filtered, these vapors will remain in the room and affect the kitchen environment. Over a period of time this will affect the kitchen furniture, soft furnishings, paintwork etc. as this is where grease and vapors settle. There are three options for cleaning the air effectively: vented mode, vented mode in combination with an external motor and recirculation mode. All three methods have their advantages and disadvantages. Which one suits you best will depend on a number of factors that are explained in a separate section.