Electrical household appliances (e.g. toasters, hair dryers, etc.) can influence indoor air quality when they are in operation. Research is currently focusing mainly on particle emissions (e.g. PM2.5). Many of these products are usually used only for a short time, but on a daily basis. For this reason, they are a relevant source of indoor emissions.
Household appliances
A common household contains a large number of electrical appliances that are used for food preparation (toaster, microwave, etc.), for personal care (hair dryer, iron, etc.) and for leisure (e.g. television). The devices are either used to generate heat or they emit heat during operation (e.g. waste heat from circuit boards). The heat can accelerate the emission of organic compounds (e.g. flame retardants in circuit boards or casings) or - at very high temperatures - cause the formation of undesirable organic compounds. In addition, it has been established in recent years that many household appliances are a source of particle emissions. The formation mechanisms and possible health effects have not yet been conclusively researched.
The influence of household appliances on indoor air is particularly evident when cooking. Water, aromatic substances and even grease aerosols can be released. The influence of household appliances on indoor air is particularly evident when cooking. Water, aromatic substances and even grease aerosols can be released. If these are not removed by a kitchen hood or intensive ventilation, they can settle on surfaces and form a film. Water is particularly problematic here, as condensed water on walls can contribute to mold growth.