Comparison Electrolux EHH 93320 NK black vs Electrolux EHF 93320 NK black

The number of Hi-Light burners in the design of the hob.

Hi-Light is an electric heater designed to eliminate the main disadvantages of solid plate burners (see above). Instead of a heating element, the “hi-lights” use a thin metal tape, and instead of a metal disc, glass-ceramic is used (see “Hob material”). Due to this, heaters of this type heat up and cool down noticeably faster than classic solid plate burners (although they are much more expensive).

The number of induction burners in the design of the hob.

A feature of such a burner is that it does not heat up by itself but transfers energy to the dishes using electromagnetic radiation. This radiation is safe for humans, and at the bottom of the dishes, it creates currents, providing heating. This format of operation provides several advantages over traditional heaters. Firstly, the burner instantly responds to a change in the operating mode — in this respect, induction heaters are similar to gas ones. Secondly, the surface of the hob (usually glass or glass-ceramic) practically does not heat up — except that part of the heat is transferred from the heated dishes; this has a positive effect on safety. Thirdly, induction burners are quite economical in terms of energy consumption. Among the disadvantages of induction heating, in addition to the high cost, we can mention that it only works with dishes made of thick steel or cast iron. Other metals on such a burner will heat up weakly, and glass, ceramics and other non-magnetic materials will not heat up at all. However, a lot of modern cookware is created specifically for compatibility with induction, which often has a corresponding designation on the bottom.

The presence on the hob of one or more dual-circuit burners — heaters with the possibility of increasing the diameter.

Only Hi-Light or induction hotplates can be dual-circuit burners (see "burner type"). Such a heater looks like several circles of different diameters with a common centre; each circle corresponds to one of the options of the working diameter that can be selected for the burner. The number of these options is usually 2 or 3, and if there is more than one dual-circuit burner, they may differ in the number of diameters available.

Anyway, this feature allows you to select the working size of the burner for the diameter of the dishes. This function should not be confused with the oval dual zone (see below): the oval dual zone gives the burner an elongated shape, and the dual-circuit burner remains round regardless of the selected size.

Nominal burners power. It refers to the power consumption of the heater. This parameter allows you to estimate how much electricity the burners will spend when operating at maximum heating intensity. At the same time, the heat transfer power of different burners can be different, and the actual heating efficiency will also greatly depend on the specs of the dishes. As a result, it hardly makes sense to evaluate the working capabilities of the hob by the power of the burners. It is quite possible to proceed from the fact that the burner will be enough for a pot of the same diameter.

The heating power directly depends on the diameter of the burners. And, at the same time, the performance of the device and the speed of cooking. The larger the burner, the more heat dissipation it has. Also, the diameter of the burner allows you to determine what sizes of dishes are suitable for use on the hob. Indeed, for induction models, this value is critical for high-quality heating. Burners can have the following diameter:

• small — about 145 mm, power within 1200 W;
• medium — about 180 mm, power within 1700 W;
• large — about 220 mm and more, power within 2000 watts.

Some hobs use double ring burners that allow you to adjust the diameter of the heating zone. If the diameter of the burner is 180, 200, 220 mm, then it means that the heating zone on a particular burner can be narrowed or expanded, depending on the size of the dishes used.

The number of temperature settings of the burner. The more power levels, the more accurately you can set the required temperature for cooking a particular dish. However, in most cases, nine levels are enough for home use. But, if you are a gourmet and often cook unusual dishes that require strict adherence to the recipe, then you simply need more temperature settings.

The input power of the hob is the maximum electric power consumed during its operation. This parameter is indicated only for models that are equipped with at least one electric hotplate. It is electric burners that are the highest consumption in terms of energy consumption. Additional functions such as auto-ignition require little energy, and a regular outlet is enough for them.

First of all, the requirements for the power mains depend on this parameter: it must be able to provide such power without overloads. It is worth noting that for household sockets the power limit is about 3 – 3.5 kW, with more power, you need to connect the hob to 230 V mains according to special rules. An alternative is to use a three-phase 400 V mains: most modern hobs with electric burners allow connection to both 230 V and 400 V mains.