Total capacity
The total capacity of the refrigerator is the total capacity of all the main working chambers: refrigerating, freezing, zero, and wine chambers. The set of these chambers, of course, will be different in different models (see more about them above). Here we note that large volumes, on the one hand, simplify the storage of numerous products and, on the other hand, affect the dimensions and price of the unit. It is also worth considering that refrigerators of the same total capacity may differ in the capacity of individual chambers.
Number of chambers
The number of individual chambers in the design of the refrigerator.
Refrigerator and freezer compartments are separated from each other; with more advanced equipment, nuances are possible: for example, the fresh zone (see "Compartments") in some units can be part of the refrigerator compartment, in others — a separate chamber. These nuances should be clarified for each model separately. As for the specific quantity, the most popular nowadays are two-
chamber units, usually consisting of a refrigeration and freezer chamber. However, other models are also on the market — both fairly simple
single-chamber devices, and advanced solutions with
three chambers and even
more. Here is a more detailed description of the different options:
— Single chamber. Refrigerators of the simplest design, have only one full-fledged compartment — the refrigeration itself. At the same time, the volume of such models can be both small and quite significant. In addition, in single-chamber units additional “climatic” compartments such as a freshness zone/humidity zone can be provided. But if there is a freezer, the refrigerator is already moving into the category of two-chamber — even if the freezer compartment is installed inside the refrigerator and does not have its own door for access from the outside.
— Two chambers. The most popular
...type of modern refrigerator. In the vast majority of two-chamber models, in addition to the main refrigeration compartment, a freezer is provided, inside which the temperature is maintained well below zero. Note that not every refrigerator with such equipment is suitable for freezing food (for more details, see “Freezer temperature”). However, the presence of a freezer allows to effectively store previously frozen food.
On the market, you can find (albeit very rarely) two-chamber models without a freezer. These are either display refrigerators (see "product type"), or classic units, where other equipment is provided — for example, a completely separate fresh zone.
— Three chambers. In units from this category, two traditional compartments (refrigeration and freezing) are supplemented by a third compartment that differs in purpose. The specific type of such a compartment should be specified separately. It can be, for example, a fresh zone, a wine chamber, etc. Anyway, the functionality of three-chamber refrigerators is wider than that of traditional two-chamber refrigerators. The downsides to this are the higher price and size: most three-chamber units have a French Door or Side-by-Side layout (see "Product type"), while the classic vertical models have an increased height.
— Four chambers. Refrigerators of this type are usually classified as multi-chamber. They consist of the main compartment, a freezer and two additional compartments. At the same time, one of the additional compartments is almost guaranteed to be a fresh zone but the purpose of the second one can be different: an additional fresh/humidity zone, a multi-zone (see "Compartments"), a wine chamber, etc. Anyway, such refrigerators, on the one hand, are multifunctional and roomy; on the other hand, they are bulky and expensive. All of them belong to the category French Door or Side-by-Side (see "Product type").
— Five chambers. Further development of the idea of multi-chamber refrigerators; is similar to four-chamber models, except that there are not two additional compartments, but three. Accordingly, the functionality of such units is more extensive, the cost is higher, and the dimensions, usually, are even larger.Inverter compressor
Inverter compressors are called compressors that can smoothly change the power of work.
The compressor is a pump that pumps freon through the cooling circuits of the refrigerator. A conventional (non-inverter) compressor has only one power level, and the cooling intensity changes due to periodic switching on and off: the longer the time of continuous operation and the fewer interruptions in operation, the stronger the cooling, and vice versa. Such a design is inexpensive, but it has several disadvantages — in particular, uneven cooling, relatively low temperature control accuracy, and a tendency to create power surges in the network where the refrigerator is connected. Inverter compressors run continuously, while the pump power varies depending on current needs. Thanks to this, refrigerators with compressors of this type are free from the described disadvantages and have some other advantages, such as low noise level and energy efficiency. On the other hand, such units are quite expensive.
No Frost
The No Frost function prevents the formation of frost inside the refrigerator. The general principle of its operation is that excess moisture is blown out of the working chamber by a special fan, not having time to settle on the walls and form frost.
This function is most relevant for the freezer, although it is technically easy to provide in the refrigerator. Therefore, refrigerators with
No Frost in all compartments are the most popular nowadays, much less often this system is installed only in the
freezer, and extremely rarely — only in the refrigerator (usually in such models there is no freezer at all).
The No Frost function significantly simplifies the user's life. It eliminates the need to
manually defrost the refrigerator and even eliminates the need for automatic defrosting systems (see "Features"). The reverse side of this convenience is that such systems absorb moisture not only from the air but from the food inside too. So for long-term storage, the contents must be tightly packed — otherwise, it dries quickly. In addition, the presence of No Frost inevitably increases the overall cost of the fridge. So if these moments are critical for you, the fridges
without No Frost may well be the best choice.
Refrigerator capacity
The total capacity of the main working chamber of the refrigerator. If there are separate zero chambers, compartments for wine and other additional functions, this paragraph takes into account only the volume of the refrigerating chamber itself, without additional equipment. In the smallest modern units, this figure
does not even reach 100 liters, in the largest it can exceed
400 liters.
The choice of capacity depends on the actual storage needs of the products. At the same time, both the volume of stocks and the frequency of their replenishment (every day, once a week, etc.) matter. The chamber should not be stocked completely; this adversely affects the quality of the refrigerator. On the other hand, it is worth remembering that large volumes accordingly affect the dimensions and price of the unit.
In general, for one or two people, a capacity of
200 – 250 liters, or even less, is considered quite sufficient. The optimal capacity for a family of three is about
250 – 300 liters, for four to five people —
300 – 350 liters, and larger volumes are really needed mainly for specific situations when food has to be stored in large quantities and for a long time.
Dynamic air cooling
This function means that there is a built-in fan that circulates air around the refrigerator compartment. It contributes to the evenest distribution of cold and more efficient cooling than in units without a fan, where the air moves only due to natural convection. The main disadvantages
of dynamic air cooling are the increase in noise level, energy consumption and the cost of the refrigerator.
LED lighting
Indoor lighting based on built-in light-emitting diodes (LED) has several advantages over more traditional bulbs. Firstly, due to its high efficiency, it gives excellent brightness with low power consumption and also generates almost no heat. Secondly, small
LED lamps can be evenly distributed along the walls of the chamber, providing bright illumination of the entire volume of the refrigerator. The disadvantages of such lighting can only be attributed to a certain difficulty in repair and replacement. However, modern LEDs are quite durable.
Freezer compartment
The freezer, if present, may be positioned differently relative to the main compartment of the refrigerator. In classic units and French Door models (see "Product type"), the
bottom location of the freezer is found predominantly (in some cases, such a freezer has a
retractable design).
The top location is noticeably less popular, although it is also used quite often. Side-by-
side freezer models are almost all in the Side-by-Side category (see "Type"). And some modern refrigerators may
not have a freezer at all. Here is a more detailed description of each option:
— Bottom. By installing the freezer at the bottom, you can raise the main (refrigerator) compartment to the optimum height: it will be in front of the user’s eyes, and you will not have to bend down to access the contents of this compartment. That is why this option is the most popular nowadays: most users often need access to the main volume of the refrigerator, and a freezer is required relatively rarely. Note that we are talking about classic freezers with doors; drawer freezers are placed in a separate category, described below.
— Bottom (retractable). Freezer with a bottom location, made in the form of a drawer. The general advantages of the bottom location are described above. And the retractable design provides added convenien
...ce for the user, relieving him of the need to make unnecessary movements: to access the contents, it is enough to pull out the drawer without having to open the door first. On the other hand, such freezers are more demanding on the quality of thermal insulation, which affects the cost of the entire refrigerator. In addition, the pull-out chamber is one common container, without division into levels, while such chambers are rarely provided for more than two — this limits the possibility of separating different types of products into different compartments of the freezer.
— Top. The top position of the freezer makes it easy to access the contents without having to bend over. On the other hand, you will most likely have to bend over to access the main compartment. So this layout option is not as common as the bottom freezer installation and is mainly in two categories of refrigerators. The first is individual models of classic layout or French Door layout (see "product type"); many of them have a large overall height, which partly compensates for the features of the top location of the freezer. The second variety is compact units of small volume in which the freezer is installed inside the main compartment and does not have its outer door. In such cases, the top setting is considered optimal for several technical reasons.
— Side. The traditional option for Side-by-side units (see "Product type"), which is practically not found in other types of refrigerators. Note that the side freezer in such cases does not necessarily occupy the entire height of the refrigerator — it can be combined, for example, with a fresh zone or a wine chamber. In some models, freezers with this arrangement can even be equipped with separate doors. Although usually all compartments on one side of the unit are still covered by one common door.
— No freezer. By definition, single-chamber models do not have a freezer compartment (see "Number of chambers"); at the same time, in this category, there are both compact and rather large and roomy refrigerators. You can also find two-chamber units without a freezer on the market — in them the main compartment is usually complemented by a clearly defined fresh zone, but there is only one door, common to both compartments. Another type of unit with this feature is display refrigerators (see "Product type").Freezer capacity
The capacity of the freezer installed in the refrigerator. Such a chamber is designed to store products at temperatures well below zero (on average -18 °C). Its capacity is related to the total capacity of the refrigerator (and the capacity of the main, refrigerating chamber). However, there is no strict dependence here — models with a similar volume of the refrigerating chamber can be equipped with freezers of different sizes.
When choosing by capacity, it is worth considering how much frozen food you plan to store at a time. Note that it is undesirable to fill the freezer completely — this negatively affects the efficiency of work. However, if this chamber is planned to be used only occasionally, and you do not plan to keep numerous products in it, you can not chase after the capacity: for such cases,
25 – 50 liters, or even
smaller capacities, are enough. In the smallest modern refrigerators, the freezer capacity
does not exceed 10 liters. And vice versa, very roomy freezers come across — for
176 – 200 liters and even
more. Such volumes are typical mainly for side-by-side and French door units (see "Product type"). However, they are also found in models of the classic two-chamber layout.