Author: Ni-Kovic Kitchen Equipment | Kitchen Electrification Transformation Special | Last Updated: July 2026
Switching from gas to a commercial electromagnetic frying stove in a Chinese kitchen is not as simple as replacing a stove, but a complete project involving electricity, extraction, stove selection, chef adaptation and return on investment. “You may have to spend some time convincing the chef to switch from gas to an induction cooker, but few people want to go back once they switch to electrical equipment,” says an experienced master.
This article is written by Ni-Kovic compilation, provides a complete set of planning guides for transitioning from gas to induction cooker - from pre-renovation assessment (electricity, extraction), stove selection, chef adaptation, to ROI trial calculation.
This article guide
- 1. before the transformation: first think clearly why to change
- The first step in the renovation: power assessment and three-phase power
- Step 2 of the renovation: Air extraction and ventilation assessment
- Stove selection: Choose the right induction cooker
- Chef Adaptation: Persuasion and Training
- Investment return period calculation
- Phased Transition Roadmap
- Renovation Project Process and Timeline
- Common Traps and Ambush Prevention
- Key Elements for a Successful Transition
- Frequently Asked Questions (FAQ)
1. before the transformation: first think clearly why to change
To switch from gas to electromagnetic, you need to think about the motivation and goals before you can plan accurately.
1.1 Five drivers of transformation
- **Kitchen Cooling:** Heat is not lost to the air, and the kitchen temperature is 4–5°C lower than traditional kitchens, saving on air conditioning costs.
- **Kitchen Cooling:** Heat is not lost to the air, and the kitchen temperature is 4–5°C lower than traditional kitchens, saving on air conditioning costs.
- **More hygienic:** No exhaust fumes, soup doesn't burn easily, and it's easy to clean.
- **More hygienic:** No exhaust fumes, soup doesn't burn easily, and it's easy to clean.
- **Compliance Trends:** Net zero carbon reduction, open or no gas berth restrictions.
1.2 Special Considerations for the Transformation of Middle Chefs
Chinese kitchens talk about fierce fire, throwing pans, pans, the special considerations for transformation are:whether the stove has enough firepower, can you throw the pan, and whether the chef is willing to turn. These are addressed one by one in the postscript.
1.3 Set transformation goals
Should the entire kitchen be renovated at once, or in stages? Is it for compliance and cost-saving, or to improve the environment? Only with clear goals can the scale of the renovation and the budget be determined.
The first step in the renovation: power assessment and three-phase power
Electricity is the most critical, and most underestimated part of Chinese kitchen electromagnetization.
2.1 Assess the total electrical load
Add the power of all electromagnetic frying ovens and other electric heating equipment, commercial refrigerators to assess the total kitchen load and confirm whether the shop supply is sufficient. This has to be done at the very beginning of the remodel.
2.2 Three-phase power demand
Commercial induction wok cookers, especially high-power models (e.g., 8kW), typically require 380V three-phase power (some 8000W models support 220V single-phase or 380V three-phase). In large kitchens with multiple cookers operating simultaneously, three-phase power is almost always necessary.
2.3 Application for single phase to three phase
If the shop has single-phase electricity, an application for single-phase conversion to three-phase will be required from the electricity company, involving the application process, electrical box specifications and construction time. This has to be consulted early with the electric utility and licensed electrician as it may be the longest lead time for conversion.
2.4 Electrical boxes, wiring and protection
High-power equipment requires separate lines of sufficient amperage, compliant electrical boxes, grounding and leakage circuit breakers (RCDs). All electrical worksmust be constructed by licensed electrical personnel in accordance with the Hong Kong Electricity Regulations.
Step 2 of the renovation: Air extraction and ventilation assessment
The conversion from gas to electromagnetic systems requires a reassessment of the exhaust and ventilation systems—but the direction is "reduced load".
3.1 High Exhaust Load of Open Flames
Open flame combustion produces a large amount of exhaust gas, hot gas and oil smoke, and the exhaust system has high power, long operation time and high electricity consumption. This is a burden on the original gas kitchen.
3.2 Reducing Load After Electrification
After switching to electromagnetic operation, there is no open flame combustion, no exhaust gas, and the heat is greatly reduced, thus lowering the exhaust load. The exhaust system can use lower power or operate at a reduced speed, saving electricity and maintenance. However, this does not mean that the exhaust system can be removed.
3.3 Cooking Fumes Still Require Treatment
Chinese stir-frying still produces a lot of oil fumes, so range hoods, grease traps, and exhaust ducts are still essential and must meet hygiene and fire safety requirements. Sufficient fume handling capacity should be reserved during the assessment.
3.4 Steam and Heat Dissipation
If there are steaming equipment such as electric steamers and rice noodle roll makers, steam and drainage must be handled; induction cookers and refrigerators also require space for heat dissipation. The exhaust, heat dissipation, and drainage systems should be planned together.
Stove selection: Choose the right induction cooker
After assessing the power and exhaust systems, the next step is stove selection—there are several key points to consider when choosing a kitchen appliance.
4.1 Concave surfaces with high power
Choose models with super strong sensing and continuous heating from the oven (such as 15cm from the oven) to ensure that the throwing pan does not break the fire. In this regard, please refer to Yingjun's a commercial use of electromagnetic stoves.
4.2 Strong induction for wok tossing
Choose models with super strong sensing and continuous heating from the oven (such as 15cm from the oven) to ensure that the throwing pan does not break the fire. In this regard, you can refer to Ying Jun's commercial electromagnetic frying oven.
4.3 Assign Single-Burner Ranges with Rear Pots Based on Station Requirements
For the position of stir-frying and potting, the first choice is single head and single tail with rear tail soup stove. Flat surface stoves are used for cooking posts, and electromagnetic low soup stoves are used for boiling soup.
4.4 Quality Materials and Safety Protection
SUS 304 stainless steel body, hydroelectric separation, overtemperature protection, automatic power off. These are consistent with the principles of choosing other commercial electric heating equipment, which is about durability and safety.
Chef Adaptation: Persuasion and Training
The biggest “soft resistance” to the transformation of Chinese kitchens is often not the equipment, but the chefs.
5.1 Chefs are mostly traditionalists
"Most of the chefs are conservative", used to open flames, and wary of induction cookers, an experienced master confessed. But he also stressed—Few people would want to go backonce they truly switched to electrical equipment.
5.2 How to convince the chefs
- Arrange a trial cooking session:Let him feel for himself the fire of throwing the pan 15cm away from the oven, immediately opening.
- Let the finished product speak for itself:The same dish is stir-fried in an electromagnetic frying oven. It depends on the pan and appearance.
- **Personal Benefits:** Cool kitchen, no open flame for safety, easy to clean, and improved working environment.
5.3 Training Key Points
Train chefs to become familiar with multi-stage heat adjustment and immediate response to heat, record the heat stalls of commonly cooked dishes, and establish standards. The heat of an induction cooker is precise, and the adaptation period is usually not long.
5.4 Provide an adaptation period
Give chefs a period of transitional adaptation, starting with familiar dishes and gradually building confidence. The support and patience of management is the key to the success of the transformation.
Investment return period calculation
The boss is most concerned about – how long does it take to pay back the cost? The following provides a trial calculation framework (numbers are demonstration in nature, actual by scale and energy price).
6.1 Initial Investment Items
- **Power system upgrade:** Application for single-phase to three-phase conversion, and construction costs for electrical boxes and wiring.
- **Power system upgrade:** Application for single-phase to three-phase conversion, and construction costs for electrical boxes and wiring.
- **Engineering:** Exhaust system adjustment, traffic flow modification, and installation costs.
6.2 Annual Savings
- **Energy Costs:** High thermal efficiency; City University of Hong Kong's actual tests showed that energy costs were reduced by nearly half.
- **Air conditioning:** The kitchen temperature is reduced by 4–5°C, thus decreasing the air conditioning load.
- Extraction and Maintenance: Reduced extraction load, low failure rates, and time-saving cleaning.
6.3 Concept of Payback Period
Payback period ≈ initial investment ÷ net annual savings. The greater the production volume, the longer the operation time, the more annual savings, the faster the return. Chinese kitchens usually produce large quantities of products and pay back relatively quickly.
6.4 Look at the Total Cost of Ownership
Don’t just look at the initial investment, calculate the overall cost of holding (TCO) for five or ten years. Continued savings in energy, air conditioning, pumping, and maintenance often far exceed the initial investment difference.
Phased Transition Roadmap
Unless it is a new opening, existing Chinese kitchens do not necessarily have to convert everything at once; the transition can be done in stages to spread out costs and risks.
Phase 1: Transitioning Auxiliary Stations First
First electrify the stations for soup-making, blanching, and steaming, switching to induction low-height soup stoves, commercial electric steamers, and the like. With the least resistance and immediate results, this lets the kitchen adapt initially.
Phase Two: Trial use of one or two induction cookers
Install one or two induction woks in the wok area to allow chefs to test and adapt, transitioning to coexistence with open flame woks, and building confidence and standards.
Phase Three: Complete Conversion of Stir-frying Furnace Area
After the chefs adapted, the entire wok area was converted to a single-head, single-tail electromagnetic wok, completing the electrification of core positions.
Phase Four: Overall Optimization
Reorganize the kitchen workflow, separate hot and cold preparation areas, and integrate the electrical and exhaust systems with equipment such as commercial refrigerators to maximize the efficiency of a flameless kitchen.
Renovation Project Process and Timeline
A typical conversion project from gas-powered cooking to commercial induction cooking generally follows the workflow below.
|
Phase |
Main Tasks |
Notes |
|
1. Assessment |
Assess electrical capacity, exhaust ventilation, kitchen workflow, and menu requirements. |
Conduct this assessment as early as possible to determine the scope of the renovation. |
|
2. Design |
Select cooking equipment, design the kitchen layout, and plan the electrical and ventilation systems. |
Involve a professional kitchen design and engineering team. |
|
3. Application |
Apply for the conversion from single-phase to three-phase power and obtain the necessary engineering approvals. |
This step usually has the longest lead time, so apply as early as possible. |
|
4. Installation |
Install electrical systems, ventilation equipment, and commercial cooking appliances. |
All electrical work must be carried out by licensed electricians. |
|
5. Commissioning |
Test all equipment and calibrate heating performance. |
Ensure safe operation |
|
6. Training |
Conduct chef trials and standardize cooking heat settings. |
Allow sufficient time for staff to adapt. |
|
7. Operation |
Begin full operation and continuously optimize kitchen performance. |
Monitor and document operational improvements. |
Among all project stages, the application for upgrading from single-phase to three-phase power typically has the longest lead time. It should be initiated as early as possible to avoid delaying the entire project.
Common Traps and Ambush Prevention
9.1 Underestimating electricity demand
The most common problem is discovering insufficient power supply or no three-phase power after purchasing the equipment. It's crucial to conduct an electricity assessment and apply for power as early as possible; don't wait until the last minute to discover this.
9.2 Remove the exhaust system
It's a misconception that since there's no open flame, there's no need for exhaust fans. However, stir-frying in Chinese cuisine still produces a lot of fumes, so range hoods and oil filters are still necessary, although the workload can be reduced.
9.3 Net purchase of the most flat furnace
Open-hearth furnaces lack sufficient heat, have weak induction heating, cannot effectively toss food, and are inefficient and prone to failure. Instead, choose a commercial-grade furnace with a concave surface, high power, strong induction heating, and SUS 304 stainless steel with protective features.
9.4 Ignoring Chef Adaptation
Forcing chefs to cooperate without providing training will only lead to resistance and substandard results. Instead, a trial cooking session, training, and adaptation period should be arranged, using the finished product and its benefits to persuade them.
9.5 Risk of transferring all risks in one go
A complete overhaul of the existing kitchen at once would concentrate both risk and cost. A phased transition would be preferable, diversifying risks and gradually yielding results.
9.6 Neglecting after-sales service
Choose suppliers without local repair services, as they will be forced to cease operations upon malfunction. Instead, choose suppliers that offer local manufacturing, installation, maintenance, and rapid repair services.
Avoid these six periods of stagnation for a smoother transformation. If you're looking for a team that provides one-stop planning and local after-sales support, you can refer to Yingjun's Service Scope.
Key Elements for a Successful Transition
- **Electricity First:** This means that the earliest initiation of electricity assessments and single-phase to three-phase conversion applications has been completed, with the longest lead time.
- **Effective extraction:** Ensure sufficient fume treatment while making good use of the reduced extraction load.
- **Choose the right stove:** Concave surface, high power, strong induction, single-head and single-tail soup stove with a rear tail.
- Winning over the chef: Try cooking, train, give them an adaptation period, and convince them with the same benefits as the finished product.
- **Calculate Returns:** Calculate the overall holding cost; high production volume leads to quick returns.
- **Phase-by-phase transition:** From auxiliary positions to the wok area, costs and risks are dispersed.
- **Professional oversight:** Licensed electricians and suppliers with local after-sales service.
Frequently Asked Questions (FAQ)
Q1. What's the first thing to do when converting a Chinese kitchen from a gas stove to an induction cooker?
First, conduct an electrical assessment. Sum the power of all induction cookers, electric heating equipment, and refrigerators to estimate the total load and confirm whether the power supply is sufficient. High-power cookers usually require 380V three-phase power. If the stall only has single-phase power, apply for a single-phase to three-phase conversion as soon as possible. This is the step with the longest lead time.
Q2. After switching to electromagnetic mode, is the air extraction system still needed?
Still necessary. The absence of open flames greatly reduces the heat and exhaust load of the exhaust gas, allowing for the use of lower power or reduced operation; however, Chinese stir-frying still produces a lot of fumes, so range hoods, grease traps, and exhaust pipes are essential and must meet hygiene and fire safety requirements.
Q3. Why is the chef unwilling to change the bill?
Chefs are mostly conservative, but once they actually switch to a different approach, they rarely want to go back. You can arrange trial cooking sessions to let them experience tossing the wok 15cm away from the stove, the instant high heat, compare the wok hei (wok aroma) with finished products, and talk about the tangible benefits such as coolness and safety. You should also provide training and an adaptation period.
Q4. How long will it take to break even?
The payback period is approximately equal to the initial investment divided by the annual net savings (energy + air conditioning + ventilation + maintenance). Chinese kitchens have a large output and long operating hours, resulting in significant annual savings and a relatively quick return on investment; once the initial investment is recouped, it becomes net profit. The overall holding cost should be factored in over five to ten years.
Q5. Is it mandatory to transfer all the data at once?
Not necessarily. It can be done in stages: first, switch to auxiliary positions such as soup making, blanching, and steaming; then, test install one or two induction wok ovens alongside open flame wok ovens; once the chefs are comfortable, switch entirely to the wok oven area; and finally, optimize the overall system. This phased approach can spread costs and risks.
About Ni-Kovic Kitchenware
Nikovic Kitchen Equipment was established in 2013 and specializes in providing the Hong Kong food and beverage (F&B) industry with a comprehensive range of commercial induction cookers, commercial induction wok ranges, commercial electric cooking equipment, commercial electric steam cabinets, commercial electric steam pots, and commercial refrigerators. We also offer one-stop services including kitchen layout design, electrical capacity and ventilation planning, equipment selection, custom manufacturing, and installation. If you are planning a smooth transition from gas to induction cooking for your Chinese kitchen, we provide a complete solution covering power assessment, equipment selection, installation, and chef training. Feel free to contact our professional team or visit the Nikovic official website to learn more.
*The data in this article regarding thermal efficiency, three-phase electricity, power and return calculations are compiled from publicly available industry data and actual measurements. Actual results may vary depending on the location, size, menu, and energy prices. Electrical work must be carried out by licensed electrical personnel. This article is for planning reference only.
XI. Example of Investment Return Calculation: A Medium-Sized Restaurant
To be more specific, the following calculation is based on a medium-sized restaurant (all figures are for illustrative purposes only and will vary depending on the size, menu, and energy prices; they are only used to illustrate the calculation logic).
11.1 Initial Investment (Demonstration)
Assuming the replacement of four single-head, single-tail electromagnetic wok ovens with related heating equipment, single-phase to three-phase conversion, exhaust gas adjustment, and installation, the initial investment would be a substantial sum. This is a one-time expenditure.
11.2 Annual Savings (Example)
Based on CityU's actual test showing that "electricity saves nearly half the energy compared to open flame," assuming that daily cooking energy costs decrease from approximately NT$600 for open flame cooking to approximately NT$250 for electric cooking, the daily savings are about NT$350; with 30 business days per month, the savings are about NT$10,000, and about NT$120,000 per year. Adding to this the savings on air conditioning and exhaust systems, and reduced maintenance and cleaning time, the annual savings are even greater.
11.3 Payback Period (Example)
Based on annual net savings after deducting the initial investment, most medium-sized restaurants can recoup their costs within a few years, after which the annual savings become net profit. The larger the output and the longer the operating period, the faster the return on investment.
11.4 Implicit Returns
Besides the tangible monetary benefits, there are also intangible rewards such as a cooler kitchen to retain employees, reduced fire risk, and an improved environmental image. Although these are difficult to quantify, they are equally valuable for long-term operations.
This example illustrates that transformation is not about "spending money," but about "investing"—using a one-time investment to achieve long-term, sustainable savings and improvements.
12. Lokale Gegebenheiten bei der Transformation chinesischer Küchen in Hongkong
12.1 Gas charges are too high
There is a general consensus that cooking with gas in Hong Kong is expensive, which makes the energy-saving advantage of induction cookers particularly prominent in Hong Kong, resulting in a more obvious return on investment.
12.2 Small berth space
In Hong Kong, where kitchen space is extremely limited, a single-burner, single-tail induction wok, which combines two functions in one and eliminates the need for a gas pipe, is space-saving and flexible, making it especially suitable for small kitchens.
12.3 Open-plan and shopping mall shops
Open kitchens cannot use open flames, and many shops in shopping malls do not have gas supply and have strict fire safety requirements, so electromagnetic technology is often the only or best option.
12.4 Allow time for three-phase electricity applications.
The application process for converting a single-phase power supply to a three-phase power supply in Hong Kong involves procedures with the power company and construction, which may take a long time. It is important to plan ahead and not apply just before opening for business.
XIII. Post-Transformation Daily Management and Optimization
The transformation is not the end; good daily management is essential to maximize efficiency.
13.1 Establishing standards for cooking temperature
The heat level and cooking time for each dish are recorded as a standard, so that different chefs can produce consistent results and it is also convenient for beginners to get started.
13.2 Wok Management
Prepare a concave iron wok with a round bottom, check the fit of the wok bottom regularly, maintain the wok, wipe it dry to prevent rust, and keep the wok's cooking function and wok aroma consistent.
13.3 Electricity Management
Lower the operating temperature, turn it off during off-peak hours, avoid dry burning, and make good use of multiple power levels to maximize energy savings; pay attention to peak electricity usage to avoid overloading.
13.4 Regular maintenance
Regularly clean the furnace surface and heat dissipation vents, check electrical components and safety protection devices, and have them regularly inspected by professionals to extend equipment life and reduce malfunctions.
13.5 Record Results
Record and compare energy costs, air-conditioning expenses, and maintenance frequency before and after the transition to quantify the results, verify the return on investment (ROI), and provide a solid basis for future optimization.
Real situations: Transformation paths of three categories of Chinese restaurants
Three types of Chinese restaurants are used below to demonstrate different transformation paths (situations are demonstration in nature).
14.1 Neighborhood Hot Pot Restaurant: One-stop shop
With a small scale and few stove positions, it is suitable for one-time turnaround. Install one or two single-head, single-tail electromagnetic woks, and complete the process in a short time after confirming single-phase/three-phase power supply, so you can enjoy the coolness immediately while saving costs.
14.2 Medium-sized restaurants: Phased transformation
With multiple stoves and a large output, it is advisable to proceed in stages: first switch to soup and steaming, then gradually switch to the stir-frying area, allowing for a transition with open flames, so that chefs can adapt and costs and risks can be distributed.
14.3 New store in the shopping mall: all-electric.
Newly opened shopping mall stores often lack gas supply, so the entire layout is planned with electromagnetic wok stoves. From day one, the kitchen is flameless, eliminating the need for renovations. The planning only requires sufficient power and exhaust gas.
The common principles shared by all three types of food establishments are: prioritize your power supply, choose the right cooking equipment, ensure your chefs are comfortable with the transition, calculate the return on investment, and decide whether to upgrade all at once or in phases based on your business size. If you would like a tailored conversion plan and quotation for your restaurant, please visit Nikovic's official website or contact our team directly.
The above data, specifications, and figures are for reference only. Actual operational performance, heating times, and power consumption may vary depending on the operating environment, usage habits, installation conditions, and specific product models. For precise technical specifications or professional advice tailored to your kitchen layout, please feel free to contact our team directly.