Gas vs induction vs electric cooktops, compared

The hob debate has intensified as electricity grids get cleaner and awareness of indoor air quality grows. Gas still dominates most kitchens, but the case for switching to induction is getting stronger in many contexts. The key is understanding which factors matter most for your situation.

How each type works

Understanding the basic mechanism helps explain why the efficiency numbers differ so much.

• Gas hobs burn natural gas (or LPG) to produce an open flame. The flame heats the pan from below, but a substantial portion of the heat also goes into the surrounding air, the pan sides, and the cooker itself. Heat transfer is well-understood by most cooks, but inherently imprecise.
• Electric resistance hobs (traditional electric rings, ceramic hobs) pass electricity through a resistance coil or a halogen element. The element heats up, and that heat is conducted into the pan. Ceramic hobs add a glass-ceramic layer that the element heats through. This is more efficient than gas but still involves heating the hob surface itself, not just the pan.
• Induction hobs work on a different principle entirely. An electromagnetic coil beneath the glass surface creates a rapidly changing magnetic field. This field induces electric currents directly in the base of a magnetic pan, and those currents generate heat inside the pan itself — not in the hob surface. The result is that almost all the energy goes into the pan and its contents, with very little wasted into the kitchen air.

Energy efficiency: induction wins clearly

The physics of induction cooking gives it a clear efficiency advantage. Because heat is generated in the pan rather than transferred from a flame or hot surface, the vast majority of the electrical energy consumed goes into heating your food.

• Induction is typically around 85–90% efficient at transferring energy to the pan and its contents.
• Electric resistance / ceramic hobs are typically around 70–75% efficient — better than gas because there's no combustion, but they lose heat through the hob surface.
• Gas hobs are typically around 40–55% efficient — a large share of the heat from combustion goes into the air around the pan rather than into it.

In practical terms, induction boils water noticeably faster than gas for the same energy input, and pans cool down very quickly when you reduce the setting, giving precise temperature control.

Running cost: it depends on your energy prices

Induction uses less energy for the same cooking task — but whether that translates into a lower bill depends on the relative cost of electricity versus gas in your country. This varies enormously.

In many countries, electricity costs significantly more per unit of energy (per kWh) than gas. Where the electricity-to-gas price ratio is very high, induction's efficiency advantage may not fully offset the higher cost per unit, and gas can still be cheaper to run for a typical household's cooking use.

In countries where electricity is relatively cheap — particularly where renewables are abundant — or where gas prices have spiked, induction can offer both lower running costs and lower emissions. With home solar panels feeding daytime cooking, the calculation shifts further towards induction.

The practical advice: look up your own electricity and gas unit prices and do a rough comparison. Cooking accounts for a relatively small share of most households' energy bills compared with heating, so the absolute difference is rarely huge — but it's still worth knowing which way it goes in your area.

Emissions and climate impact

Gas hobs burn a fossil fuel on-site, which produces carbon dioxide directly. Natural gas is predominantly methane, and methane has a much more potent short-term warming effect than CO2, so leaks anywhere in the gas supply chain (wellhead, distribution pipes, your cooker's gas fittings) add to the climate impact beyond just combustion.

Electric and induction hobs produce no direct emissions from cooking. Their climate impact depends on how the electricity they use was generated. In countries with high proportions of coal in the grid, electric cooking can have a higher lifecycle carbon footprint than gas. But as electricity grids around the world continue to add more wind, solar and other renewables, electric and induction cooking becomes progressively cleaner — often much cleaner — than gas. Unlike a gas hob, an induction hob gets greener automatically as the grid decarbonises, without any change on your end.

Indoor air quality: a genuine reason to reconsider gas

Gas combustion produces several pollutants as byproducts — primarily nitrogen dioxide (NO2), carbon monoxide (CO) and fine particulates. Studies measuring indoor air quality in kitchens with gas hobs in normal use have found that NO2 levels can rise above guidelines recommended for outdoor air, particularly in poorly ventilated kitchens or when using multiple burners for extended periods.

Research has linked elevated indoor NO2 from gas cooking to increased rates of respiratory symptoms, and some studies suggest associations with asthma in children, though the science continues to develop. The risk is not negligible, particularly for people who spend a lot of time in the kitchen, for households with young children or asthma sufferers, and in flats or rooms with poor ventilation.

Induction and electric resistance hobs produce no combustion gases at all. They can still produce some cooking fumes from oil and food at high temperatures, so ventilation is still beneficial, but there are no combustion pollutants.

Cookware and practicalities

One of the most immediate practical considerations with induction is cookware compatibility.

• Induction hobs require pans with a magnetic base. Cast iron, carbon steel and stainless steel pans with a magnetic layer all work well. Aluminium, copper, and traditional non-stick pans without a magnetic layer do not.
• The simplest test: hold a fridge magnet to the base of your pan. If it sticks firmly, the pan will work on induction. If it slides off or sticks weakly, it probably won't.
• Many households already have at least some compatible pans. If not, a full set of induction-compatible pans adds to the cost of switching. Cast iron pans are an excellent, durable, induction-compatible option.
• Gas and electric hobs work with virtually any pan, which is a genuine practical advantage if you've invested in specialist cookware like copper or certain non-stick sets.

Induction hobs also have usability advantages: the glass surface stays relatively cool (only the area under the pan heats up, via residual heat from the pan), making it safer around children and easier to clean. Spills don't burn onto a cool surface the way they do on a gas or radiant electric hob.

Head-to-head comparison

Factor	Gas	Electric resistance / ceramic	Induction
Energy efficiency	Low (~40–55%)	Moderate (~70–75%)	High (~85–90%)
Running cost	Depends on gas price — often lower unit cost, less efficient	Depends on electricity price	Depends on electricity price — less energy used
Direct emissions	Yes — CO2, methane leaks	None directly (depends on grid)	None directly (depends on grid)
Indoor air quality	Combustion pollutants (NO2, CO) — ventilate!	No combustion gases	No combustion gases
Temperature control	Good — visual, responsive	Slow to respond; residual heat	Excellent — fast, precise
Cookware requirements	Any pan	Any flat-bottomed pan	Magnetic-base pans only
Safety	Open flame, gas leak risk	Hot surface risk	Cool surface; no flame
Cleaning	Grates and burner caps to clean	Glass top — easy when cool	Smooth glass — easiest

Cost to switch and when it makes sense

Switching from gas to induction involves more than buying a new hob — it may also require an electrician to install a suitable circuit, replacement pans, and potentially a new extractor if your current one only recirculates rather than venting outside. The upfront cost varies widely by country and situation.

When does switching make sense?

• When your current gas hob or cooker is reaching end of life anyway — replacement is the natural time to switch.
• When you have health reasons to reduce indoor combustion pollutants — asthma, young children, or simply a poorly ventilated kitchen.
• When your electricity grid is clean enough and prices are competitive enough that induction is cheaper or comparable to run.
• When your existing pans are already induction-compatible, reducing the transition cost.
• When you have or are planning solar panels — induction can make direct use of daytime solar generation.

When gas may still be worth keeping for now:

• Your hob is relatively new and working well — the carbon cost of manufacturing new appliances is real.
• Electricity in your area is very expensive relative to gas and you're a heavy cooker.
• You'd need to replace all your cookware (though this is less of an obstacle than it sounds — it's a one-time cost).

For broader guidance on making your home more energy efficient, see our guides on energy-efficient appliances and saving energy at home.

Your cooktop checklist

• If you use gas, always run an extractor fan vented outside when cooking.
• Test your existing pans with a fridge magnet — you may already have induction-compatible ones.
• Check your local electricity and gas unit prices before assuming which is cheaper to run.
• Consider induction when your next appliance replacement comes around.
• If your electricity comes partly from renewables or solar, induction's emissions advantage is greater.
• Prioritise ventilation in any kitchen — good airflow benefits health regardless of hob type.