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All QOOL products are produced in a climate-neutral manner in Würzburg. In addition to the black color, the Eco+ version is made from recycled material, thus underlining our sustainability claim. The performance of the two boxes is no different.

The QOOL box achieves its impressive thermal insulation performance through the use of vacuum insulation panels that are installed on all sides, in the lid and in the base of the box. In combination with the QOOL Temperature Elements, the temperature inside can be kept constant for several days. The box can be opened several times without any problem, as long as the lid is closed in such a way that no air exchange takes place.

To achieve the maximum temperature retention time of 10 days in the QOOL Box, optimal conditions should be created. It is advisable to fill the box in a similar way to the refrigerator, by filling it as full as possible with chilled products. Ideally, the products should be pre-chilled when placed in the box. The box can also cool down, but this shortens the running time. Depending on use, the Temperature Elements should be recharged or frozen after around 10 days.

The deep frozen elements are mainly recommended for professional use, such as in the catering industry. In order to pre-cool the elements correctly, they must be stored for at least 72 hours at a minimum of -30 °C. Commercial freezers can often only be set to -18 °C and cannot handle these extreme temperatures. When storing, it is also important to ensure that the elements are free-standing and not stacked on top of each other. This is the only way to ensure that the 72 hours are sufficient to completely freeze the elements and prepare them for the desired application.

For deep-freeze applications, we would therefore recommend our standard frozen elements. These give off -20 °C to -10 °C in the QOOL Box and keep your refrigerated goods frozen for up to 10 days. The standard frozen elements can also be pre-cooled in standard freezers at -18 °C.

In combination with our Temperature Elements, the QOOL cool box enables the precise setting of specific temperature ranges such as the refrigerator range from +2 °C to +8 °C or the freezer range from -20 °C to -10 °C. We can keep these temperature ranges constant for up to 10 days.

Compared to standard ice packs, which are often filled with water, our Temperature Elements offer improved performance. Conventional ice packs give off a temperature of around 0 °C when defrosting, which is already too cold for some applications and foods. However, our Temperature Elements are able to maintain the required temperatures and thus enable longer cooling of up to 10 days without electricity. Depending on the needs and requirements of the cool box, other ice packs can also be used in the box.

The same applies to ice cubes, as they are also made of water and are around 0 °C when thawed. As the QOOL Box was specially designed for use with Temperature Elements, it does not have a drain for meltwater. If ice cubes are used for cooling, we therefore recommend using a bag or similar container to collect the meltwater.