A gas burner makes a flame; the flame heats the pan, and most of its heat goes around the pan into the kitchen. An induction hob creates an oscillating magnetic field that induces electrical currents in the base of a ferrous pan, and the pan heats itself. The hob surface stays relatively cool, almost all the energy ends up in the food, and the response to turning the dial is effectively instant in both directions.
That is the whole technology, and the practical consequences follow from it. Induction is faster, more precise at low heat, cooler in the kitchen, easier to clean and cleaner to breathe next to. Gas gives visual feedback, works with any pan, handles a round-bottomed wok, and keeps working in a power cut. Which set of advantages matters more depends on what and how you cook.
Speed and Control
Induction boils water faster than any domestic gas burner, typically bringing a litre to a boil in under three minutes on a full-size hob and around four on a portable one. At the other end of the range it holds a simmer or melts chocolate with a precision gas cannot match, because gas burners have a minimum stable flame below which they go out, and induction can pulse at very low power indefinitely.
Gas gives feedback you can see: the size of the flame tells you the heat. Induction gives a number. Cooks who learned on gas find this disorienting for a week and then, in most cases, prefer it, because the number is repeatable and the flame was not.
Where gas is genuinely better
Round-bottomed wok cooking: the flame wraps the wok; a flat induction hob only heats the contact patch. Flat-bottomed woks on induction work but do not behave the same.
Charring directly over flame: peppers, tortillas, naan. Induction cannot do this at all.
Any pan: copper, aluminium, glass, ceramic. Induction needs a magnetic base.
Power cuts: a gas hob with a match keeps cooking.
Large or warped pans: gas tolerates a poor base contact; induction loses efficiency or refuses to detect the pan.
Indoor Air Quality, Which the Sales Floor Never Mentions
Burning gas indoors produces nitrogen dioxide, carbon monoxide and fine particulates. Measured concentrations of nitrogen dioxide in kitchens during and after gas cooking regularly exceed outdoor air quality guidelines, and the association between gas cooking and childhood asthma has been reported across multiple studies. Ventilation reduces the exposure substantially; many domestic extractor hoods recirculate rather than vent outside and reduce it far less than their owners assume.
Induction produces none of this. Cooking itself — frying, searing — still makes particulates on either hob, so an extractor still matters, but the combustion products are gone. For a household with young children, respiratory conditions, or a small kitchen with poor ventilation, this is a material argument and it is the one most likely to change the decision.
Side by Side
| Induction | Gas | |
|---|---|---|
| Heating speed | Fastest available | Moderate |
| Low-heat control | Excellent; holds a bare simmer | Limited by minimum flame |
| Feedback | Numeric power level | Visible flame |
| Cookware | Magnetic base only | Anything |
| Wok cooking | Flat-bottom only, contact patch | Excellent with round wok |
| Cleaning | Wipe a flat glass surface | Grates, burner caps, spills bake on |
| Kitchen heat | Low | Considerable in summer |
| Indoor air | No combustion products | NO₂, CO, particulates |
| Safety | Cool surface, auto-off | Open flame, gas leak risk |
| Power cut | Off | Works with a match |
| Running cost | Lower per meal in most markets | Depends on local gas price |
| Installation | Needs adequate electrical circuit | Needs gas supply |
The Cookware Question Is Smaller Than It Looks
Induction needs a pan with a magnetic base: cast iron, carbon steel, enameled iron, and any stainless steel pan with a magnetic base layer, which is most of them. What fails is bare aluminium, copper without a steel plate, glass and most ceramic. The test is a fridge magnet: if it sticks firmly to the pan base, the pan works. In most kitchens the only casualties are an aluminium nonstick pan or two, which were due for replacement anyway.
Pan size matters in a way it does not on gas. The induction coil has a fixed diameter, and a pan much smaller or larger than the coil heats unevenly or is not detected. Match pans to the zone sizes on the hob you are buying.
Try Before Replacing Anything
A single-zone portable induction hob costs $60–150, plugs into a normal socket, and runs at 1,500–1,800 W — roughly the power of a large gas burner on a domestic range. Cook on it for a month. If you find yourself reaching for it over the gas hob for everything but the wok, you have answered the question for the price of a pan. If you miss the flame, you have lost nothing and gained a spare burner for parties and canning.
Which Should You Choose?
Not Sure — Test for $100
- Single-zone portable induction hob, 1,800 W
- Use it daily for a month alongside the gas hob
- Magnet-test your pans first
- Keeps its value as a fifth burner or outdoor cooker either way
Small Kitchen, Kids, Precision Cooking
- Faster, cooler, cleaner air, easier to clean
- Best low-heat control available
- Replace one or two aluminium pans
- Keep a portable gas burner for a wok if you cook Asian food often
Wok Cooking, Flame Charring, Any-Pan Freedom
- Round-bottomed wok over a high-output burner
- Charring, toasting, flame-finishing
- Copper and aluminium cookware collections
- Fit a hood that actually vents outside and use it
Renovating
- Induction main hob plus one gas wok burner, or a portable gas burner
- Covers 95% of cooking on induction and the rest on flame
- Check the electrical circuit rating for a full induction hob early
- Budget for pan replacement in the renovation
Top Picks with Amazon Links
Portable Induction Cooktop, 1,800 W Single Zone
The cheapest way to answer the whole question. A good portable hob has at least ten power levels, a temperature mode for frying and holding, a timer, and a coil large enough for a 24–28 cm pan. Use it for a month; most people who do stop reaching for the gas hob for anything but the wok.
Best for: Anyone deciding between the two, and anyone who wants a fast extra burner.
Double Portable Induction Cooktop
Two independent zones on one plug make a portable unit a workable main hob for a small kitchen, a rental, a boat or a summer house. Check the combined wattage — some share a 1,800 W budget between zones, which halves the power when both run.
Best for: Small kitchens, rentals, and households replacing a gas hob without a renovation.
Portable Butane Gas Stove, High Output
The induction owner's answer to wok cooking and charring. A single high-output butane burner gives a round wok the wrapping flame it needs, works outdoors, and costs under $50. Ventilate properly and store cartridges away from heat.
Best for: Induction kitchens that still want a real wok fire.
Flat-Bottom Carbon Steel Wok, 30–33 cm
A flat-bottomed carbon steel wok gives induction a large contact patch and heats fast enough for a genuine stir-fry as long as you cook in small batches. It does not behave like a round wok over flame, but it is the best version of wok cooking available on a flat hob.
Best for: Induction households cooking stir-fries regularly.
Induction Interface Disc
A steel plate that sits on the hob and heats the non-magnetic pan on top of it. It works, at a large loss in speed and control, and it is the right answer only for a single treasured copper or aluminium pan you will not replace. Do not build a kitchen around it.
Best for: One or two non-magnetic pans worth keeping.
Ducted Range Hood with External Vent Kit
On gas it removes combustion products; on induction it removes frying particulates. Recirculating hoods with a carbon filter do a fraction of the job. If your hood does not vent outside and you can change that, it is a bigger air-quality improvement than the choice of hob.
Best for: Any kitchen where the current hood recirculates.
The Noise Nobody Mentions
Induction hobs hum, buzz or click. The hum is the cooling fan; the buzz is the pan base vibrating in the magnetic field, worst with lightweight or multi-layer pans at high power; the click is the power pulsing at low settings. None of it is loud, all of it is new to a gas cook, and heavy pans with a solid base are quietest. Gas hisses. Pick your sound.
Running Cost
Induction delivers roughly 85% of its energy to the pan against 35–40% for gas, so per meal it uses far less energy. Whether that is cheaper depends on the local price of electricity against gas, which varies enough between markets that a general answer is impossible. In most places the difference per year is small either way; the decision should rest on cooking and air quality, not the utility bill.
Full-Size Hob Installation
A built-in induction hob typically needs a dedicated circuit of 30–40 A, which many older kitchens do not have. This is the hidden cost of switching and it belongs in the renovation budget early. A portable unit on a 13 A or 15 A socket sidesteps it entirely, which is another reason to start there.
For most home cooking, induction is the better hob: faster, more controllable at low heat, cooler, easier to clean, and free of the combustion by-products that make gas cooking an indoor air quality issue. Gas keeps a real edge for round-wok cooking, flame charring and any-pan freedom. The rational path is a $60–150 portable induction hob for a month: it answers the question for the price of a pan, keeps its usefulness whatever you decide, and if you switch, a $40 butane burner keeps the wok fire.
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Frequently Asked Questions
Do professional chefs prefer gas or induction?
Restaurants have historically run on gas because of wok cooking, flame work and the tolerance for any pan; a growing number of professional kitchens now run induction for speed, kitchen temperature and control, and several high-end kitchens are induction-only. Chef preference is not a good guide to a home decision anyway: a home kitchen does not have a commercial extraction system, which is where the air-quality argument bites hardest.
Will my existing pans work on induction?
If a fridge magnet sticks firmly to the base, yes. Cast iron, carbon steel, enameled iron and nearly all stainless steel pans pass. Bare aluminium, copper without a steel plate, glass and most ceramic do not. In a typical kitchen the casualties are one or two aluminium nonstick pans.
Is induction bad for wok cooking?
A round-bottomed wok does not work on a flat hob. A flat-bottomed carbon steel wok does, and stir-fries well in small batches, but the flame does not wrap the sides so the cooking is different. Serious wok cooks on induction keep a portable high-output butane burner for the purpose; it costs under $50.
Is gas cooking actually a health risk?
Gas combustion indoors produces nitrogen dioxide and other pollutants at concentrations that regularly exceed outdoor guidelines during cooking, and several studies associate gas cooking with childhood asthma. Effective ventilation — a hood that vents outside, used every time — reduces the exposure substantially. Many domestic hoods recirculate instead, which does much less. It is a real consideration, especially with children or respiratory conditions in the house, not a reason for panic.
Is a portable induction hob powerful enough to cook on?
A 1,800 W portable unit delivers about the same energy to the pan as a large domestic gas burner, because so little induction energy is wasted. It boils a litre in around four minutes and sears well with a heavy pan. What it lacks is a second zone and a large coil, which is why it makes a good test and a good extra burner rather than a permanent solution for a family kitchen.