Drying class
Drying class describes the overall drying efficiency that the machine provides. It is denoted by a Latin letter, where A is the best efficiency, and further in decreasing order (
drying class B is inferior to
class A, but exceeds
class C). Naturally, higher efficiency machines cost more (ceteris paribus).
Door shape
The shape and design of the door used in the dryer.
— Round. The round door is made of opaque material. In general, round openings and covers for them are simpler and cheaper to manufacture than rectangular ones, which is why they are much more common. With similar dimensions, they have a smaller area. However, the round loading hatch is made quite large and does not cause problems if it is necessary to place a large object such as a duvet cover or sheet in the dryer. Opaque doors are as simple and cheap as possible but not very convenient. They do not allow you to see the contents of the machine when the door is closed. And this is important for many users (see below for more details).
— Round with glass. A round-shaped door with an insert made of transparent material — usually plexiglass or other similar plastic (ordinary glass is less reliable and is not used in dryers). The general features of the round door are described above, and the transparent insert allows you to see the contents of the drum without opening the lid — including observing the drying process itself. Such an observation provides more general comfort and reassurance than any practical benefit; however, even these moments are important when using household appliances. In addition, there are quite practical situations in which transparent inserts can come in handy — for example, when you need to make sure that unnecessary things do not get into the drum and it would be inconvenient...to interrupt the programme and open the hatch. Such doors are somewhat more expensive than opaque ones, but the advantages described are often decisive. As a result, this option is the most popular in modern dryers.
— Rectangular. Rectangular opaque door. A door of this shape gives the user more space to load laundry than a round one; theoretically, this can be useful for numerous items, especially large ones. At the same time, this advantage is not decisive, rectangular doors are somewhat more expensive, and an opaque door is also not very convenient, at least from a psychological point of view (and often from a practical one). Because of this, this option is extremely rare.
— Rectangular with glass. Rectangular door with a transparent insert made of plexiglass or other similar material. Doors with glass are somewhat more user-friendly than opaque ones (see "Round with glass" above for more on this), so this option is more common than opaque rectangular doors. However, this form is still more expensive than the round one and is used much less frequently.
