Volume
The nominal capacity of a kettle refers to the maximum amount of water that can be safely poured into it, and it is typically indicated by the water level indicator. In the case of brewing sets (see "Type"), the nominal capacity refers to the main kettle, while the capacity of the teapot is listed separately (see below).
The capacity of the electric kettle directly affects the amount of water that can be heated at once. A larger capacity allows for heating more water, but this also means the kettle will be larger and heavier. Additionally, heating a larger volume of water requires either more power or a longer time. Therefore, it is important to consider one's actual needs when choosing a kettle based on its capacity. For example,
mini-kettles for travelling (or for one person) have a volume of up to 1 liter. For home use in a family of 2 – 3 people, a 1,5 – 2 liter model is enough. Devices for
2 – 3 liters are already well suited for a small office or a similar situation. The most spacious electric kettles are designed to hold 10 liters or more, and are typically used in public places such as canteens and cafes for dispensing hot water.
Power consumption
The power consumed by the kettle during operation is actually the power of the heating element installed in the device.
Two working moments depend on this parameter: heating intensity and electricity consumption. On the one hand, the
high power of the heater allows you to quickly heat up a certain volume of water and saves time. On the other hand, the power consumption of such a device will also be appropriate. The wattage of a kettle's heater typically does not have a significant impact on electricity bills since the energy consumption required to heat a given volume of water remains the same regardless of the heater's power rating. However, there may be certain issues related to electrical connectivity. For example, if the wiring is weak or the fuses are improperly sized, the operation of a high-power heater may cause power outages. Additionally, devices with a power rating greater than 3500 W cannot be connected to a regular electrical outlet and require a specific power format. Consequently, even the largest thermal pots, which typically have a capacity of 10 L or more, are rarely equipped with heaters more powerful than 3000 W, since this power rating is sufficient for their intended use and can be connected to a standard electrical outlet.
Power in the heating mode
The power consumed by the thermopot (see "Type") in the heating mode, when the device maintains the temperature of the previously heated water. Manufacturers select this power in such a way that the device is guaranteed to be able to maintain the claimed temperature. Therefore, the only point that should be assessed by this feature is the general “voracity” of the thermopot in terms of electricity consumption. However, this mode requires relatively little energy, and the heating power does not exceed 200 W in the most voluminous models.
Temperature adjustment
The temperature adjustment capabilities refer to the specific temperature values that can be programmed into the electric kettle. It's important to note that this refers to automatic adjustment, where the kettle turns off or switches to temperature maintenance mode once the desired temperature has been reached.
If this paragraph contains several options separated by commas (for example, “60 °С, 80 °С, 90 °С”), this means that this model has several fixed temperature options. However, there are also devices with
smooth adjustment, which allows you to adjust the temperature in steps of 5 °C, or even 1 °C; for such devices, the entire adjustment range is indicated here, for example, "60 — 100 °C".
The greater the number of temperature setting options available in an electric kettle, the more versatile it becomes, allowing for precise selection of the optimal brewing mode for various types of drinks. Here is a simple table of recommended temperatures:
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white tea — 60 °C;
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yellow tea -70 °C;
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green tea — 80 °C;
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black tea — 90 °C;
— rooibos, hibiscus — 100 °C (up to boiling);
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baby food — 40 °C.
Of course, there are exceptions to such rules — depending on the specific type of drink. For example, some
...varieties of green tea can be brewed at 90 °C.Thermometer
A device that displays the temperature of the water in the kettle. The presence of a
thermometer is useful if the water needs to be heated to a certain temperature. However, the thermometer does not automatically turn off the kettle, unlike a thermostat — this must be done manually. Also, the thermometer allows you to assess how much the heated water has cooled over time and whether it can be used without heating again.
Delay start timer
A function that allows you to pre-set
the start time of the kettle. For example, you can pour water in the evening and set a timer for the morning, so that by the time you woke up, it has just boiled. This eliminates the need to turn on the kettle manually and wait for the water to heat up.
Removable lid
The ability to completely remove the lid of the kettle. Such a possibility is not of particular importance during regular use, however, it provides additional convenience if the kettle needs to be washed from the inside — a
removable lid, unlike a traditional non-removable one, will not hang on the fixture, hit your hands and create other discomforts. On the other hand, there is a certain risk of losing this lid, so this feature is not common.
Opening the lid with a button
Kettles (see "Type") in which the lid opens at the touch of a button. This opening is faster and more convenient, and often safer than the traditional way (grab the lid and pull it up): the lid can get quite hot when the kettle is in operation, and long contact with it is fraught with burns. And although the button can also be placed on the lid, a short press is enough to activate it, and even in such cases the risk of getting burned is minimal. On the other hand,
opening the lid with a button complicates the design of the kettle and reduces its reliability.
Water supply
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Water supply button. The electric pump button is used to control the built-in pump in the kettle, which is responsible for supplying water to the spout. It is considered to be the most advanced method of water supply as it requires no manual effort from the user, can work with any container, and allows for accurate measurement of the required volume. Some models even provide automatic dosing where the electric pump dispenses a strictly defined volume of liquid with just the touch of a button. However, these supply systems are more expensive and require a power supply, which can be a disadvantage for some users.
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Hand pump. The mechanical pump with a manual drive is integrated into the lid of the thermopot and is operated by a large button. This type of pump is simple, inexpensive, and does not require electricity to function, which is beneficial in case of power outages. However, it is not very convenient since multiple presses are required to fill even a small cup, and it is difficult to accurately measure the amount of water dispensed. As a result, it is typically used in conjunction with more advanced systems rather than being the sole method of dispensing water.
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Cup pressing. This method is also known as the "cup-activated dispensing system". It uses an electric pump, similar to the button systems described earlier, but the switch for the pump
...is located near the spout and is activated by the cup's edge instead of by hand. This makes it easy to dispense water by simply bringing the cup to the spout and pressing the switch with the cup's edge. However, this method is not suitable for certain types of cups such as soft plastic or paper cups, and holding the cup while dispensing can be inconvenient as the hot water can burn one's hand through the walls of the cup. Therefore, this method is often combined with a traditional serving button to provide users with the most convenient option for their situation.
