How Does an Induction Stove Work? The Magnet Test and Panel Care

Your existing pans are worth checking

If you're looking through your existing pots, we'd check their compatibility before replacing them, because many standard pans already contain induction-friendly materials. Cast iron, enameled steel and some stainless steel cookware can qualify, so you may already have what you need.

The important connection is between the cooktop's magnetic field and the cookware's metal. A pan is part of the heating system, which explains why cookware choice matters more here than its appearance might suggest.

What happens under the glass

Under the ceramic glass sits a copper coil. When current flows through that coil, it creates a magnetic field, which creates electrical currents inside compatible cookware. Those currents turn the pot or pan into the heater that cooks your food.

That explanation applies to both a separate induction cooktop and the cooking surface of an induction range. Whirlpool's explanation of induction cooking (opens in a new tab) describes the same transfer of electromagnetic energy directly into cookware for both types of appliance.

A conventional electric cooktop supplies heat through a heating element, which heats your pot indirectly. Gas supplies heat through an open flame. Induction changes where the heat originates: the cookware itself becomes the heat source, even though the smooth cooking surface may look much like a conventional electric cooktop.

What the magnet result tells you

Turn your pan over and hold a magnet against the bottom. If it sticks, the base contains ferromagnetic material, the kind needed for induction. You're checking the base that interacts with the cooking surface, so that's where the magnet belongs.

The manufacturers describe that result with different levels of certainty. KitchenAid's magnet-test guidance (opens in a new tab) says a pan that attracts a magnet can “likely” be used for induction cooking. For stainless steel specifically, it describes a “strong pull” as a likely positive result.

Whirlpool and JennAir say cookware can be used when the magnet sticks, while Bosch says it will work. We'd keep KitchenAid's qualified interpretation when checking an unfamiliar pan, because Bosch also explains that even compatible cookware can distribute heat unevenly if its base is warped.

An induction-compatible or induction-ready label is another way to identify suitable cookware. If you're choosing a replacement, look for that labeling as well as the material description, especially when you're comparing stainless steel pans.

Which cookware materials qualify

Cast iron and steel are useful starting points because induction needs metal that can interact with the field. JennAir names enameled steel, cast iron and stainless steel designed for induction among its compatible examples. That last qualification matters when you're checking a pan you already own.

KitchenAid describes most stainless steel cookware as usable, while JennAir says some stainless steel materials are compatible. Keep those qualifications attached to the material name: “stainless steel” covers cookware that still needs a compatibility check, while an induction-ready designation gives you a more specific answer.

Copper, aluminum, glass and ceramic cookware typically won't work on induction, according to KitchenAid's cookware guidance (opens in a new tab). Its list is qualified with “typically,” so use the individual pan's induction labeling and magnetic base as your checks instead of turning a broad material category into an absolute rule.

A flat bottom matters too

Look at the shape of the bottom as well as its material. A flat base helps the pan make even contact with the cooking surface and supports even heat distribution. That's a separate quality from being magnetic, and both matter when you're choosing cookware.

Bosch's cookware advice (opens in a new tab) explains that a warped or uneven base can distribute heat inconsistently even when the cookware is induction-compatible. A positive magnet result identifies the magnetic material; it doesn't, by itself, establish even heating, so favor a flat base when selecting a pan.

Why the heat responds quickly

Energy goes directly into the cookware, which is why induction can bring food and water up to temperature quickly. Whirlpool connects this direct transfer with rapid boiling and searing. The useful expectation is a responsive pan, with less of the wait associated with heating an element first.

Temperature changes follow the same path. Whirlpool's explanation of heat adjustments (opens in a new tab) says they affect the pan directly, so the pan can heat up or cool down quickly when the heat changes.

That responsiveness and the temperature of the glass are different things. The cooking surface doesn't generate its own heat, but it can receive heat from your hot cookware. A fast response in the pan can therefore coexist with a surface that's still holding transferred heat.

Where a hum or buzz comes from

A faint hum or buzz can come from slight vibrations in the cookware. KitchenAid describes that sound as normal during use, which helps explain why induction may sound different from the stove you're used to.

You may also hear a fan cooling the electronics, and humming or buzzing can be noticeable at higher settings. KitchenAid's explanation of operating sounds (opens in a new tab) recommends heavy, flat-bottomed pans to help reduce noise. That connects another part of the experience to your cookware's construction.

Clean the panel after it cools

Before cleaning, let the cooktop cool completely because heat from the pan can leave the glass hot. The relatively cool surface can help reduce baked-on spills and burnt-on grease, but the cooling check still belongs before your cloth touches the panel.

JennAir's pre-cleaning guidance (opens in a new tab) specifically calls for checking the display's Hot Surface Indicator. In that guidance, an illuminated indicator means the surface is too hot to touch, even after the cooktop has been turned off.

For ordinary cleaning, KitchenAid recommends soap, water and a soft cloth or sponge (opens in a new tab). Keep bleach, abrasive cleansers, steel wool and rust removers out of this job, because KitchenAid warns they can damage the cooktop.

1. Clean the cooled surface with soap, water and a soft cloth or sponge, wiping away the mess.
2. Follow with a clean, wet cloth or sponge, leaving the surface freshly wiped.
3. Dry the surface thoroughly so no wet areas remain. This finishing step helps avoid streaking and staining.