Everything You Need to Know About Induction Cooking & Cookware

Overview: What This Guide Covers

Induction has matured from an expensive curiosity into the dominant choice for new kitchens and hob replacements. The technology is settled, cookware selection is excellent, and the performance advantages over gas and electric are well documented. But myths persist, and the question of cookware compatibility still stops many people from making the switch. This guide works through everything you need to know.

• How induction actually generates heat, and why that matters for cooking
• The real energy and cost picture versus gas and traditional electric
• Which cookware you already own will work, and what the magnet test tells you
• Safety considerations, including the specific question of pacemakers
• How the major brands differ and who each one suits

How Induction Cooking Actually Works

Traditional cooking methods are surprisingly indirect. Gas flames heat air, which heats the pan, which heats your food. Electric elements heat themselves, then conduct heat to the pan. Both waste substantial energy on everything except what you're actually trying to cook.

Induction takes a different approach entirely. Beneath the glass-ceramic surface sits a powerful electromagnet. Switch it on and it generates a rapidly alternating magnetic field. Place magnetic cookware on the surface and that field induces electrical currents within the metal itself. Those currents encounter resistance as they flow through the metal, and that resistance generates heat. The pan becomes its own heating element.

The magnetic field extends only a few centimetres above the hob surface, so the energy is highly localised to exactly where you need it. This is why induction responds within a second to power changes, why the surface stays relatively cool, and why efficiency is so much higher than other methods.

Energy Efficiency and Running Costs

Induction's efficiency advantage is consistent across laboratory testing, but what does it mean in practice? The most common benchmark is boiling around 2 litres of water from cold:

Induction wins on both speed and energy consumption. It boils water faster than gas whilst using less power than any of the alternatives.

For a household cooking two meals daily with an average of 45 minutes of hob use per meal, the approximate annual running costs at £0.40/kWh are:

The raw efficiency figure doesn't capture everything. Induction generates very little ambient heat, so your kitchen stays cooler and air conditioning costs less in summer. Food cooks 25–50% faster, reducing total energy use further. There's no preheating delay, and modern hobs only activate when they detect magnetic cookware, so accidental energy waste is eliminated.

Key Benefits: Why People Switch to Induction

Induction is the fastest domestic cooking method available. Water comes to the boil in under six minutes. Searing starts immediately rather than after a warm-up wait. For frequent cooks, the time saved across a week adds up noticeably.

Temperature changes occur within one second, matching or exceeding gas responsiveness. Low settings hold temperatures that are genuinely difficult to achieve on a gas burner, making delicate work like chocolate melting or hollandaise far more reliable. You adjust once and the heat follows immediately.

The cooking surface stays relatively cool except directly beneath the pan. There's no open flame, no glowing element, and automatic shutoff when the cookware is removed. Many models also detect small objects and refuse to activate. For households with young children, this is a meaningful practical difference.

Gas combustion releases nitrogen dioxide, carbon monoxide, and formaldehyde into the kitchen. Induction produces none of these. Your kitchen air is the same quality as when you're not cooking at all, which matters particularly for anyone with asthma or respiratory sensitivities.

A flat glass-ceramic surface with no grates, drip pans, or crevices. Because the surface doesn't reach extreme temperatures, spills don't carbonise and fuse on. Most messes wipe away with a damp cloth. Stubborn residue responds to a ceramic hob scraper and appropriate cleaner. Cleaning after a full meal rarely takes more than a few minutes.

With 85% of energy going directly into the pan, induction wastes very little heat into the room. In a small kitchen or during summer cooking, this makes a noticeable difference to comfort.

Cookware Compatibility: What Works and What Doesn't

If a fridge magnet sticks firmly to the base of a pan, that pan works on induction. If it doesn't stick, it won't work without modification. That simple test eliminates all guesswork and takes about five seconds per piece.

Induction works by inducing electrical currents in ferromagnetic materials. Non-magnetic materials, including aluminium, copper, and non-magnetic grades of stainless steel, don't interact with the magnetic field in a way that generates heat.

Plain aluminium, pure copper, glass, ceramic, and non-magnetic grades of stainless steel won't work without modification. If you have valuable copper or aluminium pieces without magnetic bases, induction converter discs (flat magnetic discs that sit between the hob and the pan) provide a workaround, though with some efficiency loss.

Safety and Health Considerations

Induction hobs generate electromagnetic fields at frequencies of 20–40 kHz. This sits in the intermediate frequency range, well below radio frequencies. The field extends only a few centimetres above the hob surface and drops to negligible levels at 30cm distance.

International regulatory bodies in Europe, North America, and Asia consistently confirm that induction cooking is safe for general use. The World Health Organization finds no conclusive evidence linking typical household EMF exposure, including from induction cooking, to adverse health effects. Exposure levels are comparable to mobile phones, electric shavers, or hairdryers.

This is the one area that genuinely warrants caution. Research shows that electromagnetic fields from induction hobs can potentially interfere with some pacemakers and implanted cardioverter defibrillators, particularly older unipolar models and left-sided implants when the user leans over an active zone.

If you have a pacemaker or ICD:

• Consult your cardiologist before using induction cooking
• Maintain at least 60cm between your device and an active cooking zone
• Avoid leaning directly over the hob while it is on
• Modern bipolar pacemakers (manufactured after 2010) generally have better shielding, but individual advice still applies
• A standard electric hob may be a safer alternative depending on your specific device

Myth Busting: Common Misconceptions

Induction vs Gas vs Electric: Head to Head

Brands We Stock

All of the brands below produce cookware that is fully induction-compatible. Where they differ is in materials, construction, price point, and what style of cooking they suit best.

Care and Maintenance

Wipe the glass-ceramic surface with a damp cloth after each use, once it has cooled to a safe temperature. This prevents residue from building up and makes cleaning straightforward. For stubborn marks, use a scraper blade designed for ceramic hobs, held at a shallow angle, followed by a dedicated ceramic hob cleaner. Avoid abrasive pads, steel wool, or general-purpose kitchen cleaners — these can scratch or dull the surface over time.

Cast iron heats slowly and retains heat exceptionally well. Use medium power settings for most cooking — full power is rarely needed and can cause scorching. Never move cast iron directly from the hob into cold water; allow it to cool gradually to avoid thermal shock to both the pan and the hob surface. Dry cast iron thoroughly after washing and apply a light coat of oil before storing to prevent rust forming.

Carbon steel heats very quickly on induction, faster than on gas in many cases. Monitor closely and adjust power promptly. Season carbon steel pans regularly using a thin layer of oil worked into the surface over moderate heat. Avoid prolonged contact with acidic ingredients, which strip the seasoning. Wash by hand in warm water, dry immediately and thoroughly, then apply a thin oil coat before putting away.

Preheat stainless steel pans briefly before adding oil or food to help prevent sticking. Use moderate heat — stainless steel on induction reaches temperature quickly. If discolouration or mineral deposits appear, a solution of water and white vinegar cleared through the pan during cooking, or a specialist stainless steel cleaner available from us, will restore the surface. Avoid bleach-based cleaners, which damage the steel.

Non-stick pans with induction-compatible magnetic bases should be used on low to medium power. Never heat an empty non-stick pan on high — the coating degrades rapidly when overheated. Use silicone, wooden, or nylon utensils; metal implements scratch ceramic and traditional non-stick coatings alike. Hand wash where possible, even if the pan is labelled dishwasher safe, as repeated dishwasher cycles shorten the life of most non-stick coatings.

• Match pan size to the cooking zone where possible for best efficiency
• Lift pans rather than dragging them across the glass surface
• Don't use induction converter discs on pans that are already induction-compatible — they reduce efficiency without benefit
• Check pan bases periodically. A warped base reduces contact with the induction zone and leads to uneven heating
• Store pans so bases aren't scratched by other items — particularly important for cast iron and carbon steel with seasoned surfaces

Frequently Asked Questions