Hong Kong’s Consumer Council (CC) has released findings from its latest testing of 13 popular induction cookers, revealing significant performance discrepancies across major brands, particularly concerning heating power, temperature consistency, and energy efficiency. Published in the latest issue of Choice magazine (Issue 568), the report detailed that several models, including those from brands like German Pool, Giggas, and Rasonic, struggled with fundamental cooking tasks or exhibited lower energy efficiency ratings than claimed, prompting referral to the Electrical and Mechanical Services Department (EMSD) for follow-up. This comprehensive review aimed to guide consumers seeking electric cooktops, which are increasingly favored over traditional gas stoves for their ease of cleaning and low ambient heat.
The assessment covered 13 double-hob and full-zone electric models, ranging in price from HK$3,680 to HK$21,300, and focusing on cooking performance, energy consumption, and safety. A key simulated cooking test involved simultaneously heating cooking oil to 180°C within 45 minutes on the main hob while maintaining a low simmer on the auxiliary hob.
Inconsistent Heating and Low Power Identified
The performance results exposed considerable issues with heating efficiency and minimum temperature control. Two specific models, the German Pool GIC-252DB and the Giggas GS-238D, failed the high-heat test, unable to reach the required 180°C oil temperature within the 45-minute timeframe. They stalled just above 170°C, indicating insufficient power when operating both zones concurrently. Furthermore, the Panasonic KY-C223B model lagged significantly, requiring nearly 40 minutes just to reach frying temperature.
Poor heat distribution was another prevalent issue, affecting five of the tested samples. In a test simulating griddle cooking, these models showed clear unevenness, producing markedly darker browning in the center of the test pancake batter compared to the edges. This suggests that certain areas of the cooking zone receive concentrated heat, leading to inconsistent results, which is problematic for delicate cooking or uniform browning. Notably, the German Pool GIC-252DB also triggered its overheating protection mechanism during subsequent tests, forcing an automatic shutdown.
Slow Cooking Capabilities Fall Short of International Standard
The ability to control very low temperatures for delicate tasks like slow cooking or simmering proved challenging for the majority of the samples. The CC assessed low-power performance against the international standard IEC 60350-2, which requires maintaining temperatures within a narrow band (e.g., oil temperature not exceeding 53°C within 18 minutes). Nearly 70% of the induction cookers failed this test, with the oil temperature rising too quickly to qualify for appropriate low-heat control, thereby rendering them unsuitable for prolonged slow-cooking recipes or melting chocolate gradually. Only four models successfully adhered to the stringent low-power requirements.
Energy Label Inaccuracies Raise Concerns
The investigation also highlighted discrepancies in the declared energy efficiency ratings. Five of the tested models were found to have a lower actual energy efficiency rating by one grade compared to their mandatory energy efficiency labels, based on efficiency calculations.
A separate issue arose with standby power consumption. While most samples demonstrated low standby usage, the Rasonic RIC-S44E, despite heating oil quickly during the performance test, consumed over two watts (2.28W) in standby mode. This excessive latent power consumption automatically assigns it to the lowest Grade 5 energy efficiency bracket, directly conflicting with its Grade 2 label classification. The CC has already forwarded these findings, particularly those related to labeling inconsistencies, to the EMSD for immediate review and enforcement action, underscoring the necessity for regulatory oversight of manufacturer claims.
Consumer Actionable Takeaways
The Consumer Council advises potential purchasers of induction cookers to prioritize performance and energy claims over brand recognition or initial cost. Consumers should review the detailed Choice magazine report for models that excelled in both rapid heating and precise temperature control.
To ensure safe and prolonged operation of induction cookers, the CC recommends:
- Using an independent socket for the appliance, given its high rated power, and avoiding shared outlets with other high-wattage devices.
- Checking the glass surface for any cracks or damage before use; discontinuing operation and seeking repair immediately if damage is detected.
- Allowing the internal fans to run their full cycle after cooking before disconnecting the power supply to ensure proper cooling of internal components and extending the unit’s lifespan.