Capacity
The total working volume of the freezer compartment. A larger volume allows for more products to be stored, but it affects the size and cost of the unit; therefore, when choosing based on this parameter, it's important not to chase maximum capacity but to consider what volume you actually need. For example, for household use, the average necessary volume is 50 liters per person; and when choosing a display freezer (see "Type"), you need to consider the number of products to be sold. More detailed recommendations for selecting the optimal volume can be found in specialized sources.
It is also worth considering that the freezer is often divided into several compartments (see below) — which means that a large volume does not necessarily guarantee that large pieces of products can fit into the device.
Inverter compressor
Unlike classic compressors, inverter compressors operate continuously, with the power changing depending on current needs. Freezers with
an inverter compressor are free of the main drawback - regular switching on / off, which negatively affects the durability, energy consumption and noise of the device. On the other hand, such units are quite expensive.
Big drawer
The presence of a larger drawer in the freezer. Such large containers allow you to store a whole turkey and other large products. It is worth noting that the concept
of a large drawer may vary depending on the manufacturer - in some cases it is quite possible that it will be comparable to a classic drawer of another model.
Door shelves
The shelves inside the freezer door will serve as a haven for small products in the manner of a pack of butter or ice cream. They also facilitate quick access to the above-mentioned content. Note that the number of shelves can be different, and depending on the manufacturer of the freezer equipment and the internal arrangement of the unit, they can be different in width. In any case,
door shelves in the amount of several pieces are much more convenient for the distribution of small products.
Max. temperature
The highest temperature maintained by the freezer during normal operation. This parameter is not as important as the minimum freezing temperature, however, it allows to evaluate the optimal conditions for storing certain categories of products that do not need deep freezing. And in some cases, it shows that the freezer can
work as a refrigerator.
Minimum temperature
The lowest temperature that the freezer can maintain in normal operation. First of all, the duration of food storage in the freezer depends on this parameter: it is believed that a temperature of -12 ° C is enough to preserve food for a month, -18 ° C – 3 months, -24 ° C – up to a year. At the same time, it must be taken into account that not only temperature affects the shelf life but also the type of product and its quality before freezing.
Power failure autonomy
The amount of time the freezer keeps food cold enough when the refrigeration system is turned off, for example, due to a breakdown or power outage. Technically, the power failure autonomy for each model is calculated differently; For example, for a freezer with an operating temperature of -18 ° C, this is the period during which the products in the chamber heat up from -18 ° C to -9 ° C. To sum up, the time is indicated during which the frozen products are guaranteed not to heat up to a temperature at which they could lose their properties.
Freeze capacity
One of the main indicators of freezer performance is the approximate amount of fresh food that the freezer can completely freeze from room temperature to the minimum operating temperature in 24 hours. For domestic use, a power of 10-15 kg/day is considered quite sufficient. More performant models may be required if you have to freeze a lot of food at a time or for industrial purposes.
Ice maker
It is a separate device for producing edible ice in the freezer. One of the advantages of such freezers is that the ice is produced and stored separately from other products and thus does not absorb foreign odours.
