Freezer temperature
The lowest temperature provided by a refrigerator freezer.
The lower the freezer temperature indicator, the more advanced the freezer is considered to be, and the better it is suited for long-term food storage with wider capabilities. It's important to note that the standard operating temperature for a fully functional freezer is -18 °C, which is suitable for both storing and freezing pre-frozen foods. Some refrigerators are designed with a temperature indicator of -24 °C, but this is mainly achieved through the quick freezing mode (see "Functions"), and the standard operating temperature is still -18 °C. However, if you plan to freeze food frequently and store it for extended periods, it's better to choose a model with a temperature of -24 °C and consider the freezing power as well.
Less expensive refrigerators have a less advanced freezer with a modest minimum temperature of -12°C or even -6°C, which is only suitable for storing pre-frozen foods, not for freezing fresh food. Although they are much more affordable.
To indicate the temperature of the freezer, markings in the form of asterisks (snowflakes) are often used, each of which means a decrease in temperature by 6 °C. For example, the mentioned -18 °C will correspond to 3 asterisks (***).
Autonomy time
Refrigerators with good thermal insulation can maintain low temperatures inside for a significant amount of time even if there is a power outage. This period of time is known as the "keep cold time," during which the refrigerator can preserve perishable food items. A longer keep cold time indicates better thermal insulation, making the refrigerator more suitable for areas where power outages are common.
Controls
Refrigerator control panel. To date, there are such options:
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Rotary switches. While a rotary switch technically has the potential to be used for a wide range of functions, in practice, this variety is typically only found in basic models with limited functionality. In such cases, control is often done manually by turning a thermostat knob, with limited options for adjusting temperature, humidity, and other settings.
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Push-buttons. CRefrigerators can have a control panel with classic buttons that offer various functionalities depending on the model. These functionalities can range from basic adjustments (similar to rotary switches) to fine-tuning of temperature and humidity, control of special modes, and more. Compared to rotary switches, push-buttons generally offer a wider range of possibilities.
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Touch. Touch panels are a modern and stylish control option for refrigerators, which requires a light touch to operate. They are considered the most advanced type of control, providing convenient and extensive functionality. Touch panels are typically installed in premium models, where they add to the device's aesthetic appeal with a minimum of unnecessary protruding parts.
Noise level
This parameter indicates the level of noise that the refrigerator produces while operating. A noise level of 40 decibels is similar to the average volume of human speech, 50 decibels is similar to the background noise in an office, and 80 decibels is similar to traffic noise. The lower the noise level of the refrigerator, the more comfortable it will be to use.
Door panel hinge
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Door sliding — a special type of mount for a built-in refrigerator, in which the decorative facade rests on the hinges of the cabinet, and the refrigerator door itself is only partially loaded. The sliding fastening of a built-in refrigerator's facade allows the door of the fridge to slide along the guides on the inside of the decorative panel, reducing the load on the hinges and increasing the appliance's durability. However, this can create a gap where dust can accumulate, and the door can only open up to 90-95˚, which may cause inconvenience when accessing shelves and drawers.
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Door on door — a special type of fastening of a built-in refrigerator, in which the front decorative facade is hung directly on the refrigerator door. With this type of installation, the front decorative panel of the refrigerator is fixed directly onto the door hinges. The main advantage of this rigid attachment method is that the refrigerator door can be opened wider, up to 110-115˚ or even more. Furthermore, there is no gap between the door of the refrigerator and the decorative panel, which creates a sense of structural integrity. However, one drawback of this method is that it can create additional weight load on the refrigerator door hinges, leading to sagging if they are not designed to bear the weight of the panel.