Households across the UK with an induction hob are being urged to spend around 50p on a fridge magnet to carry out a simple but important check. The test reveals whether their pans are compatible with the hob, which can affect cooking efficiency and energy bills.
Why pan compatibility matters
Induction hobs work by generating a magnetic field under the glass surface, which creates an electrical current inside pots and pans and causes them to heat up. However, only pans with a magnetic base, such as cast iron, carbon steel and certain types of stainless steel, are compatible. Using the wrong type means the pan will not heat up efficiently, affecting cooking and shortening the lifespan of the cookware.
The 50p test
According to Miele kitchen appliance expert Ryan Adams, director of Ati Harrogate, a fridge magnet needs to firmly stick to the bottom of the pan to indicate compatibility. If the magnet slides off easily, the pan likely lacks the magnetic properties needed for efficient heating.
Adams said: "To test if your cookware is suitable, use a refrigerator magnet. If it sticks firmly to the bottom of the pan, it’s likely induction-compatible. However, if the magnet slides off easily, the pan may not have strong enough magnetic properties for efficient heating."
He added: "Pans made from cast iron, steel, or some types of stainless steel are usually compatible, but materials like aluminium, glass, or ceramic will not work. When shopping for new cookware, bring a magnet to double-check the compatibility before buying."
Energy and cost impact
UK households are already being encouraged to switch from gas hobs to electric ones ahead of a potential sales ban to help meet net-zero targets, as induction hobs are more efficient. But if pans are not compatible, cooking becomes inefficient, wasting energy, money and time.
Adams also warned: "If you use pans that are too small for the cooking zone, the cooktop may not detect them at all, wasting energy and time. Cheaper cookware can warp under high heat, leading to uneven cooking, and may even need replacement sooner, increasing your long-term costs. Investing in durable, induction-compatible cookware allows better performance and saves you money over time."
A fridge magnet can be bought for as little as 50p on Etsy, making this a low-cost check that could save energy and money in the long run.
