Toasters should always be situated in a ventilated area. Toasters are often situated under kitchen cupboards, however the build up of heat the toaster causes can get trapped and pose a potential fire risk. Dualit recommends that toasters shouldn't be kept under cupboards or shelves, or when in use, they should be placed away from the cupboard.
Of course we realise that toasters will be stored under cupboards in a large number of homes. If you do this please ensure that the product is NEVER PLUGGED IN in this situation. We do ask that the toaster is pulled forward away from the cupboard when used. A large proportion of the heat generated will go straight up and that is not good for your cupboards or any under cupboard light fittings. Also, if a fire were to occur, those flames will be in direct contact with your cupboards if the toaster were still positioned underneath.