Donut fryers can be categorized by heat source or surface type. Electric and gas fryers are available, with commercial models including multiple vats and cooling areas. Floor-standing fryers are for professional use, while countertop fryers are for home and commercial use.
Different types of donut fryers are often categorized by how the heat is generated or the surface they are to be placed on. Both electric and gas fryers are commonly available, using different types of power supplies to create the heat needed to bring the cooking oil up to a sufficient temperature. Floor-standing fryers are typically those intended for professional or commercial use, which sit on the floor and are quite tall. There are also countertop fryers that can be used both commercially and in a home kitchen and that sit on a countertop rather than the floor.
Donut fryers heat vats of oil into which the dough or batter for the deep-fries is placed. Commercial models of these appliances are often quite large and may include several vats of hot oil and a conveyor belt that moves the donuts through the fryer. These devices may include a cooling area that allows donuts to cool slightly before being dipped in frosting or covered with various toppings. Home kitchen donut fryers are typically a bit smaller, usually intended to fry only a few donuts at a time, and don’t necessarily include a cooling area.
A common way donut fryers can be arranged is the way heat is applied to the oil. Electric deep fryers typically plug into a wall outlet, such as one found in a home kitchen or commercial bakery. The electricity-powered heating coils cause the temperature of the oil in the vats to rise, which is used to cook the donuts. There are also gas donut fryers that are often used at trade shows and other events without reliable or available electrical outlets, which use gas-fueled fires to heat oil.
Donut fryers can also be classified by the type of surface they are usually placed on during operation. A floor model or floor fryer is large enough to stand on the floor of a room. These fryers are quite tall, usually supported on legs or a large frame, and many commercial models are available in this style. Countertop donut fryers, on the other hand, are shorter and can be placed directly on a counter, rather than set on legs. Larger versions of these models are available for use in professional bakeries, although smaller countertop fryers are often preferred for home kitchens.
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