The Best induction cooktop Buying Guide
Induction vs Radiant: Which Electric Cooktop Should You Choose?
Are you considering purchasing an electric cooktop?
The first question isn’t just which model to choose—it’s whether you should buy an electric cooktop at all. Even after deciding to go electric, selecting the perfect model becomes quite challenging when you consider the different types (induction vs radiant), various price points, and numerous brands available in the market.
That’s why nosearch is here to help. We’ll guide you through everything you need to know—from the pros and cons of electric cooktops to how to choose the right model for your needs.
Chapter 1.
induction Pros and Cons – Part 1
Cleaning, Heating Power, and Cooking Speed
Let’s compare electric cooktops and gas ranges in three key aspects:
① cleaning/maintenance
② heating power
③ cooking speed.
1. Types of Electric Cooktops
Three Types:
Induction, Radiant, & Hybrid
Electric cooktops are divided into three types based on their heating methods:
1) Induction (electromagnetic heating)
2) Radiant (direct heating)
3) Hybrid (combination of induction + radiant)
Induction Cooking:
Only the Cookware Gets Hot
Induction cooktops heat only the cookware, not the cooktop surface. Here’s how it works:
1) Electric current flows through internal coils
2) This creates an alternating magnetic field
3) The magnetic field induces electric currents in the cookware, generating heat through resistance
Note: Since this method uses magnetic fields, only magnetic cookware (stainless steel and iron) can be used. While the surface itself doesn’t generate heat, it can become hot from contact with the heated cookware, so caution is still needed.
Radiant Heating:
Surface Heats to Transfer Heat to Cookware
Radiant cooktops heat the entire surface. The process works as follows:
1)Internal heating elements generate heat
2)The surface is heated through conduction
3)Heat transfers from the surface to the cookware through conduction The advantage of radiant cooktops is that they can be used with any type of cookware.
Hybrid: ‘Induction + Radiant’
Hybrid cooktops combine both induction and radiant heating elements. Their main advantage is the flexibility to use either type of cooking zone as needed.
2. Cleaning and Maintenance
High Satisfaction with Easy Cleaning
Simple Wipe-Down After Cooking
Easy cleaning and maintenance is one of the most satisfying aspects of electric cooktops for users. Simply wiping away oil and spills after cooking keeps the surface clean.
However, with radiant cooktops, you should wait 20-30 minutes after cooking before cleaning due to residual heat.
Stuck-on Food Requires a Special Scraper
Both radiant and induction cooktops require maintenance with scrapers and specialized cleaners. While both types can get food stuck to them to varying degrees, it’s important to use only dedicated scrapers – not regular scrubbing pads – to avoid scratching the surface.
Gas Ranges Now Offer Improved Cleaning Features
While gas ranges can be more challenging to clean due to their design, recent models have addressed this with:
1) Improved structures for easier cleaning
2) Built-in designs, digital controls, and additional features for better usability If you’re considering an electric cooktop mainly for easier cleaning, it’s worth looking at newer gas range models as well.
3. Heating Power
Power Ranking:
Induction >> Gas Range > Radiant
Heating Power = Output × Efficiency
First, let’s distinguish between power output and heating power:
1)Power output (energy consumption) refers to the thermal energy from electricity or gas 2)Heating power is the actual energy used for cooking (temperature increase), calculated by multiplying output by efficiency
Gas Has Higher Output,
But Induction Has Best Heating Power
Looking at the largest burner output of current models (varies by product), gas ranges might seem to have the highest power. However, when we consider efficiency:
Approximate efficiency rates:
1)Induction: 90%
2)Radiant: 65%
3)Gas range: 50%
When multiplying output by efficiency, the power ranking is: induction > gas range > radiant.
Notably, induction’s effective heating power is about 1.5 times that of gas ranges, making the difference noticeable during cooking. Radiant cooktops,
however, may feel underpowered when cooking large quantities or when high heat is needed. Many radiant cooktop users commonly complain about insufficient heating power.
4. Cooking Speed
Speed Ranking:
Induction >> Gas Range > Radiant
Preheating Time is Critical – Induction is Fastest
While heating power is important, the method of heat transfer matters more for cooking speed:
1)Induction is fastest because electromagnetic heating warms the entire cookware simultaneously
2)Gas ranges use radiant heat transfer, slower than induction but faster than radiant electric
3)Radiant cooktops are slowest because they require a) heating element warm-up time and b) two conduction steps (element→surface→cookware) Note: While all three methods involve various heat transfer types, this is simplified for understanding.
Induction is Up to 2x Faster Than Gas
3x Faster Than Radiant
When bringing 0.5 gallons of water to 212°F using maximum-output models, induction is approximately twice as fast as gas and three times faster than radiant cooktops. When people claim induction is slow, they’re usually confusing it with radiant cooktops.
Chapter 2.
induction Pros and Cons – Part 2
Drawbacks, and Safety Concerns
Let’s examine two more aspects of electric and gas cooktops: ① drawbacks ② safety concerns.
1. Other Drawbacks
Induction: Noise and specialized cookware required
Radiant: Residual heat
Induction Drawback #1:
Induction cooktops produce several distinctive sounds:
1)Thermal expansion:
Clicking sounds from cookware
2)Resonance:
Humming or buzzing based on cookware material and thickness
3)Interference:
High-frequency sounds when using multiple burners
4)Fan noise:
Cooling fan operation Most users report that these sounds aren’t particularly bothersome, especially considering normal cooking noises and range hood operation. However, if noise concerns you, watching operation videos before purchasing is recommended.
Induction Drawback #2:
Limited to Steel and Magnetic Stainless Steel Cookware
Induction cooktops only work with magnetic cookware (steel or magnetic stainless steel). Ceramic, glass, aluminum, and other materials won’t work.
One common complaint is the inability to use traditional clay or ceramic cookware. However, specially designed induction-compatible versions are available, though more expensive, they often provide excellent heat retention.
When switching from gas to induction, you don’t necessarily need to replace all your cookware. Induction converter plates allow you to use non-magnetic cookware. These plates work by heating up and transferring heat to the cookware. However, note that using converters:
1) Results in slower heating
2) Isn’t suitable for extended cooking
3) Requires careful handling as the converter gets very hot
To check if cookware is induction-compatible: 1)Look for the induction symbol
2)Test with a magnet – if it sticks, it’s compatible Note that not all stainless steel works with induction – verify compatibility before purchasing.
Radiant Drawback:
Long-Lasting Residual Heat
Radiant cooktops take a long time to cool down after use. This requires extra attention in households with children or cats that might jump on counters. However, some users view this residual heat as beneficial for keeping food warm.
While induction cooktops also retain some heat from the cookware, they cool much faster (about 10 minutes). All models display “H” when residual heat is present (common to both types).
Both Types:
Limited Cooking Techniques
Neither induction nor radiant cooktops allow for certain cooking techniques like tilting pans, wok tossing, or direct grilling of items like squid or seaweed.
However, most users report no difference in taste for standard cooking. Occasional complaints about taste differences usually stem from unfamiliarity with heat control on electric cooktops.
2. induction Safety Concerns
EMF & Gas Emissions:
Both Concerns Are Somewhat Exaggerated
Induction EMF:
Safety Certified, Below Concern Levels
Induction cooktops must pass electromagnetic field (EMF) safety certification before sale. EMF measurements from available models are well below safety limits, making concerns largely unfounded.
Gas Range Emissions:
Also Below Concern Levels
While some consider switching to electric due to gas emissions concerns, research shows that gas ranges’ carbon monoxide and nitrogen oxide emissions from incomplete combustion are actually very low.
While CO2 levels can exceed recommended levels during gas cooking, this: 1) Quickly dissipates with ventilation
2) Is less significant compared to particulate matter from cooking itself
Particulate Matter:
Common to Both Electric & Gas
The more significant health concern is actually the particulate matter and volatile organic compounds produced during cooking, regardless of heat source. Therefore, switching to electric won’t significantly improve indoor air quality.
The most effective approach with any cooktop is:
1) Ensure thorough ventilation after cooking
2) Always use the range hood while cooking
3. induction Price Points
Induction costs 2x more than radiant
and 5x more than gas ranges
Consider Features vs. Budget
Electric cooktop prices vary significantly by type. Induction cooktops, while preferred for their power and speed, cost about five times more than gas ranges.
This has led many consumers to consider imported brands for better value. It’s crucial to carefully weigh the pros and cons of each type against your needs and budget before making a decision.
Chapter 3.
induction Cooking Performance
Power Output, Number of Burners, and Flex Zones
What features should you look for in an electric cooktop? Let’s examine the key criteria for selecting the right model based on power output and number of burners.
1. Induction Power Output
Large Burner Output: 2000-3700W
Most Recent Models 3000W+
Induction cooktops’ large burner output ranges from 2000W to 3700W, depending on the model. Higher power outputs command higher prices.
Most models operate with “levels 1-9 + turbo mode.” Note: Turbo mode typically operates for up to 10 minutes, varying by model.
Even 2000W Turbo Mode Heats Faster Than Gas
A 2000W induction burner:
1) Offers similar power to gas ranges
2) Provides faster heating
Regardless of power output, induction cooktops heat quickly enough for immediate cooking once turned on.
This means even lower-powered models can deliver the quick cooking experience induction is known for. If budget is a concern, you don’t necessarily need the highest-powered model. Note: At 2000W, the surface heats enough to stir-fry vegetables within 10 seconds of powering on.
2. Radiant Power Output
Most Models: 2000-2100W,
Weaker and Slower Than Gas
Most radiant cooktops’ large burners are around 2000W, maxing out at about 2300W.
With little variation in power between models and no high-power options, they’re generally weaker and slower than gas ranges. Focus on price, design, and usability rather than power output when choosing.
3. Number of Burners
Three Burners Recommended If Space Allows
Single Burner: For Extra Cooking Areas
Two Burners: For Budget Constraints
Single burner models work well for portable use outside the kitchen (excluding built-ins). Two-burner models are recommended for limited budgets or space, common in studio apartments as built-ins.
Three Burners:
Most Practical Choice
Most brands focus on three-burner models as they offer the best practicality. Highly recommended for typical households of 2-4 people.
Four Burners:
Expensive with Limited Options
Compared to three-burner models, four-burner induction cooktops:
1) Cost more
2) Have fewer model options
3) Are less practical due to power limitations preventing full usage of all burners Not recommended unless specifically needed.
4. induction Flex Zones
Flexible Cooking Zones:
Nice But Not Cost-Effective
Flex zones allow for various cookware sizes. When cookware is placed in the flex zone, it automatically detects position and heats only the necessary area, accommodating both small and large cookware.
Different manufacturers use various names (FlexZone/WideZone/Bridge Zone), but the function is similar, varying only in division capability. Models offer 2-4 divisions, with more divisions allowing for smaller cookware adaptation.
Some premium models offer “real all-flex zones” where the entire surface has small embedded coils, allowing: 1)Cookware placement anywhere
2)Automatic detection and heating However, these models are rare and expensive.
Not Recommended Due To:
1)High cost
2)Lower efficiency (heating unnecessary areas due to rectangular coil units)
3)Limited practical use While convenient, flex zones aren’t essential features given their cost and efficiency trade-offs.
Chapter 4.
induction Usability Features
Power Control, Surface Material, and Additional Functions
Let’s examine what features to look for in terms of usability.
1. Power Control Methods
Three Types of Controls,
Touch Controls Less Convenient
One-Touch: Most Convenient
One-touch controls are the most user-friendly, allowing immediate power setting with a single touch.
Slide controls, which let you adjust power by sliding your finger, are also available. However, since both types primarily operate through single touches, there’s little difference in convenience.
Some one-touch models only allow direct setting of certain levels (1/5/9), requiring +/- adjustments for other levels.
Touch Controls:
Less Convenient Due to Multiple Presses
Touch control models using +/- buttons require multiple presses to reach desired power levels, making them less convenient than one-touch systems.
Dial Controls:
Common on Single and Double Burners
Dial controls, typically found on single and double burner models, are among the most convenient control methods alongside one-touch systems.
2. Surface Quality
Most Use SCHOTT Ceramic Glass,
Minor Differences Between Grades
Most brands use German SCHOTT glass, while some use EURO KERA (one of the world’s top three electric cooktop surface manufacturers) from France. Even within the same brand, surfaces can vary by:
1) Glass grade
2) Production location
3) Coating (e.g., Miradur)
However, these differences don’t significantly impact durability or maintenance convenience, so it shouldn’t be a major factor in your decision.
Even SCHOTT’s basic-grade ceramic glass surfaces offer sufficient durability and maintain cleanliness well with regular scraper maintenance.
3. Additional Features
Standard Features Common Across Models – No Special Considerations Needed
| Additional functions | Detailed description |
|---|---|
| Auto cookware detection | (Free zone model) Detects cookware position and sets corresponding burner to standby |
| Child lock | Button lock to prevent accidents by children |
| Timer | Cooking end time preset |
| Pause/Stop | Temporarily lower or stop power to all burners |
| Keep warm mode | Maintains warm temperature with low power after cooking |
| Cooking mode | Automatically sets power according to cooking method (steam, fry, stir-fry, etc.) |
| Temperature setting mode | Maintains temperature rather than power level settings |
| Wi-Fi | Remote control through smartphone app |
| Residual heat indicator | Indicates until burner heat completely dissipates |
Most essential features come standard on electric cooktops, so there aren’t many additional features to specifically consider when purchasing. However, here are some convenient but non-essential features:
Automatic Pan Detection in Flex Zone Models
Flex zone models automatically detect cookware
placement and activate the necessary heating zones.
This eliminates the need to
manually select burners – just set the power level. This feature comes standard
on most flex zone models.
Temperature Control Mode for Deep Frying
This useful feature maintains constant temperature for deep frying and similar cooking methods. Instead of power levels (1, 2, etc.), you can set specific temperatures for consistent heat.
Warming Mode and Auto-Cooking Modes
1) Warming mode maintains low power to keep food warm after cooking
2) Auto-cooking modes automatically adjust power for different cooking methods like steaming, frying, grilling, and stir-frying
However, warming mode isn’t essential as you can use the lowest power setting or residual heat instead.
Auto-cooking modes, similar to microwave presets for eggs or instant rice, are preset configurations rather than special features, making them non-essential.
