Induction vs Gas Cooktop: What They Really Cost in a NZ Kitchen

Gas feels like the "real cook's" choice, and induction gets pitched as the modern efficient one — but the honest answer for a NZ kitchen depends heavily on whether you're on reticulated gas, bottled LPG, or neither, and what that does to your ongoing running costs.

Start with the fact most guides skip: NZ's gas supply is patchy

Reticulated natural gas in New Zealand is only available in parts of the North Island — mainly Auckland, Waikato, Bay of Plenty, Hawke's Bay, Manawatū and Wellington regions — piped in from the Taranaki gas fields. Large parts of the South Island (Christchurch, Dunedin, Queenstown) and many North Island towns have no reticulated gas network at all. If you're not on the reticulated network, "gas cooking" means bottled LPG, typically two 45kg cylinders swapped or refilled by a supplier like Rockgas or Elgas, which changes the running-cost maths substantially compared to piped gas.

Installed pricing in 2026

Running costs: induction vs LPG vs reticulated gas

Induction is dramatically more energy-efficient at transferring heat into the pot — typically around 85–90% efficient, versus roughly 40% for an open gas flame where a lot of heat escapes around the sides of the pan. At a NZ power rate of $0.32/kWh, boiling a litre of water on induction costs a couple of cents. On bottled LPG, the same task costs more once you account for the wasted heat and the per-kg price of LPG, which has been volatile — expect ongoing cooktop-only LPG costs to run higher per year than induction's electricity cost for equivalent cooking, though the gap narrows if you're on cheaper reticulated gas rather than bottled.

Cookware compatibility — the catch with induction

Induction cooktops only heat cookware with a magnetic base. Cast iron and most stainless steel pots and pans work fine, but aluminium, copper-bottomed, and some older ceramic-look pans won't work at all unless the base has a bonded magnetic layer. A simple test: if a fridge magnet sticks firmly to the bottom of your pot, it'll work on induction. Budget for potentially replacing part of your cookware set when switching to induction — a decent induction-compatible stainless steel saucepan set runs roughly $150–$400 in NZ if you need to replace non-compatible pieces.

Cooking performance differences

Gas gives instant, visible flame control that many home cooks find more intuitive, particularly for wok cooking or anything needing rapid heat adjustment. Induction actually responds faster than gas in absolute terms — cutting power to an induction element stops the heat transfer almost immediately, whereas a gas flame's residual heat lingers in the pan — but it takes some adjustment for cooks used to reading a flame visually. Induction also keeps the cooktop surface itself much cooler except directly under the pot, which matters for the next point.

Safety

Induction is meaningfully safer for households with young children: the cooktop surface stays cool to the touch outside the pot's contact area, there's no open flame, and no gas leak risk. Gas carries the small but real risk of gas leaks (particularly with ageing bottled LPG hosing that needs periodic inspection) and open-flame burns. If safety around kids or elderly residents is a deciding factor, induction is the clearer choice.

Cleaning and maintenance

Induction's flat glass-ceramic surface wipes clean in seconds since there are no burner grates, trivets or flame ports to catch spilled food — a genuine time saver on busy weeknights. Gas cooktops, particularly older cast-iron grate models, need the grates lifted out and the burner caps cleaned separately, and boil-overs can drip into the burner assembly and cause an uneven flame until cleaned out properly. Over a decade of ownership, this is a meaningful quality-of-life difference that rarely makes it into spec-sheet comparisons.

Resale and renovation value

NZ real estate listings increasingly flag induction cooktops as a kitchen feature, particularly in newer builds and higher-end renovations, reflecting a broader shift toward all-electric homes. If you're renovating with resale value in mind, induction is increasingly viewed as the more modern, desirable option, though a well-installed gas cooktop on reticulated gas in an established gas-cooking region (parts of Auckland, for instance) still holds its own appeal for buyers who specifically want to cook with gas.

Bottom line

If you're already on reticulated gas and enjoy cooking with a flame, gas remains a reasonable, relatively low-cost choice with cheap running costs. But if you're relying on bottled LPG, the ongoing cylinder costs combined with induction's dramatically better heat efficiency mean induction usually pays back its higher upfront and electrical installation cost within a handful of years, while also being safer and easier to clean. For a straight renovation decision with no existing gas connection, induction is the stronger long-term buy for most NZ households in 2026 — just budget for the electrician and check your existing cookware works before you commit.