Energy class
The energy efficiency class characterizes the the economy of a dishwasher's electricity consumption. Initially, the classes were denoted in Latin letters from A (high degree of economy) to G (high consumption). But later, with the development of energy saving technologies, more advanced classes than A appeared. They are denoted by the letter A with a certain number of pluses (
A+,
A++, etc.); the more benefits, the higher the economy. Most modern built-in dishwashers comply with energy classes from A to
A+++(the last is 30% more economical than the original class A). More high consumption models, such as classes B and C, are much rarer and gradually disappear.
More economical models cost more, but the difference can be recouped in energy savings. Also note that the energy consumption class does not describe efficiency in general, but in comparison with other similar models; therefore, the actual consumption of a small class A device may be lower than that of a large class A++ model.
Noise level
The approximate noise level produced by the dishwasher during operation. In modern models, this parameter can range from 37 – 39 dB (muffled human voice) to 59 – 60 dB (loud conversation); more detailed decoding of what sound corresponds to a particular number of decibels can be found in special tables. Anyway, the
low noise level contributes to the comfortable use of the device. It is especially important if the dishwasher is to be used at night (for example, if there are reduced electricity rates at night).
Number of programmes
The number of washing programs (modes) provided in the dishwasher. These programs may differ in duration, exposure intensity, water temperature, dish material (for example for delicate dishes), etc. For more information on the different options, see "Washing programs". And the more modes — the more advanced the device is, the more options it provides to choose from. But note that with the same number of programs, their specific set in different models may be different; these details should be clarified separately.
Beam on floor
The light indicator of work of the dishwasher. During the operation of the device, a special light mark is projected onto the floor in front of it; at the end of the programme, this mark goes out. Thus, one glance in the direction of the device is enough to determine its current state. And for fully integrated models (see "Type of installation"), this function is also convenient because it is no need to open the door to check the status of the device. Actually, the vast majority of units
with a "beam on the floor" are fully integrated.
Also note that in high-end dishwashers, not just a light mark in the form of a dot can be used, but a miniature projector, which is a
beam on the floor with a time indication or with other auxiliary information.
Chamber lighting
The presence of a
lighting system in the working chamber of the dishwasher.
Modern dishwashers have deep working chambers which can make it difficult to see the contents, even when the machine is installed in a brightly lit place. A proprietary lighting system solves this problem by improving visibility and doesn't depend on external light sources.
Door closer
The presence of an
door closer in the design of the dishwasher.
An auto-closer is a device that helps close or open a door smoothly to the fully closed or open position, preventing the door from remaining in an intermediate position. It has two functions: ensuring the door is fully closed to prevent splashes and damage, and providing soft closing/opening to prevent shock and damage.
Child lock
A protective system designed for those cases when there are small children in the house. To prevent a curious child from injuring himself and ruining the dishwasher, various locks can be provided in the design — usually for the door, sometimes also for the control panel.
The child lock function turns off in a way that is easily accessible to an adult but not accessible to a child.
