Gas Hob versus Induction Hob for London Kitchens: An Honest Comparison

Cooking Performance

Gas hobs produce an open flame that heats the base and sides of the pan simultaneously, transfers heat directly without any conversion stage, and responds to temperature adjustment instantly. Professional chefs and serious home cooks value the visual feedback of the flame, the ability to char directly over the burner, and the compatibility with all cookware types including copper, cast iron, and carbon steel. High-BTU wok burners produce significantly more heat output than any induction zone — a domestic wok burner at 5kW to 6kW exceeds the maximum output of most domestic induction zones, which typically cap at 3.5kW to 4kW. For London households that cook Asian cuisine regularly, gas remains the preference for wok cooking.

Induction hobs heat the pan directly using an electromagnetic field generated in a coil beneath the glass surface, with no energy wasted heating the hob surface itself. The result is faster heating for pots and pans, greater precision at low temperatures, and a significantly cooler hob surface that reduces the risk of burns from accidental contact. Induction is more energy-efficient than gas for the same cooking task — approximately 85 percent of the electricity consumed reaches the food, versus approximately 40 percent for a gas hob where much of the heat escapes around the pan sides and to the air. The limitation of induction is cookware compatibility — only ferromagnetic pans with a flat base work, which excludes copper pans, traditional aluminium pans, and most glass pans. A magnet will stick to induction-compatible cookware.

Installation Costs in London

Installing a built-in gas hob in a London kitchen where existing gas pipework reaches the hob position costs approximately £150 to £250 in engineer labour. If new copper pipework needs to be run from the gas manifold to the hob position — as is typical in kitchen redesigns or island installations — the cost increases to £250 to £400 depending on the routing. A Gas Safe registered engineer is legally required, and a gas tightness test certificate is issued on completion.

Installing an induction hob in a London kitchen requires a dedicated 32A or 40A single-phase circuit from the consumer unit to the hob position. If the kitchen already has a cooker circuit, this can be reused or extended. If no cooker circuit exists — common in London flats and smaller Victorian terraces that have never had an electric cooker — a new circuit from the consumer unit may cost £200 to £400 depending on the distance and routing. An NICEIC or NAPIT-registered electrician must carry out the work and issue a Part P Building Regulations certificate for the new circuit.

Running Costs

Gas costs per unit of heat delivered are lower than electricity costs per unit in the UK at most tariff rates, though the gap narrows with energy-efficient induction cooking. A typical London household cooking three meals per day on a gas hob uses approximately 150 to 200 kWh of gas per year for hob cooking. At current gas unit rates this equates to approximately £8 to £12 per year. The same household using an induction hob with 85 percent efficiency would use approximately 80 to 120 kWh of electricity per year for hob cooking, at a higher unit rate, typically costing £20 to £35 per year. For most London households, the running cost difference is small relative to the installation cost difference.

Safety Considerations

A gas hob requires a Gas Safe registered installation and introduces gas pipework into the kitchen. Gas leaks, though rare with correctly installed and maintained appliances, create a fire and explosion risk. Carbon monoxide production from incomplete combustion is possible if burners are blocked or the kitchen is severely under-ventilated. An induction hob has no combustion and no gas, eliminating these risks entirely. The cool hob surface of an induction unit reduces burn risk compared to gas. For London properties with young children, induction offers a genuine safety advantage. Contact Prestige Engineers for gas hob installation or for advice on switching from gas to induction across all London boroughs.