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Induction Cooktop Efficiency


by DoItYourself Staff

An induction cooktop uses induction for the purpose of heating and cooking food. Induction cooktops offer the highest electrical efficiency, thereby saving money in the long run. These appliances tend to be costly and require the use of special cookware.

Method of Functionality

The basic method of functionality of an induction cooktop is vastly different from that of other types of cooktops. In a gas cooktop, the heating element is a burner, which uses gas as a fuel source to heat itself up. The heat and the flames from the burner heat the pan on it in order to cook the food. In this process, a major portion of the heat is lost to the surroundings. The same is true of electric cooktops, in which electric coils transfer heat to the cookware.

Induction cooktops, on the other hand, consist of powerful electromagnets under the cooking surface. These magnets use electricity to produce a magnetic field, which induces electrical current in a magnetic cooking utensil placed on top.

In this mechanism, the cooktop is not heated, and significant energy loss doesn't occur during transmission. There may be a slight loss of energy when the cookware itself loses some of its heat to the cooktop surface. However, this loss is minuscule when compared to the losses seen in gas and standard electric cooktops.

Energy efficiency of induction cooktops is about 90%, as compared to 65% for electric cooktops, and about 50% for gas cooktops. So even if you consider the additional cost of buying ferromagnetic cookware, you will be saving money in the long run.

Features That Improve Efficiency

In addition to its energy-friendly mode of operation, an induction cooktop also features several attributes that aid in energy conservation. If a pot boils dry or spills over, an induction element can detect it and automatically shut off. The risk of fumes and fires is greatly reduced with this feature. If you accidentally turn on an element, it will detect the absence of a pan and shut down by itself.

Induction cooktops have the same or better reaction time as gas cooktops. But the risk of burns is minimal as compared to other cooktops that have open flames or red hot coils at much higher temperatures than the cooking surface of an induction cooktop. Because the cooktop surface is comparatively cooler, the risk of food burning is also greatly reduced.

Another noteworthy feature is that you save considerable energy because the surface area heated in the bottom of the cooking utensil. In gas or electric cooktops, the use of small pots and pans on a larger burner results in considerable wastes of energy. Control locking also aids energy efficiency by preventing accidental activation of a cooktop element.

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