Apr 11, 2025
In recent years, a clear trend has emerged across the air fryer industry: more and more appliance brands are moving away from traditional U-shaped tubular heating elements and adopting open convection coil heaters instead.
Why the shift?
The answer lies in performance, flexibility, and consumer expectations. If you're an air fryer manufacturer, understanding this shift can help you design more competitive, energy-efficient, and user-friendly products.
Let's explore the key reasons behind this transition.
Coil heaters offer much faster thermal response compared to tubular heaters.
Lower thermal mass: The exposed resistance wire heats up in seconds.
More direct heat transfer: No need for internal conduction through metal tubes.
Shorter preheat time: Consumers experience quicker cooking cycles, improving convenience and satisfaction.
💡 Result: Air fryers using coil heaters can reach target temperatures 30–50% faster.
Air fryers rely on convection, and coil heaters allow for better airflow design:
Their open spiral structure permits hot air to pass through freely.
Can be positioned directly above the fan without blocking airflow.
Enable more even heat distribution across the cooking chamber.
In contrast, tubular heaters often block airflow due to their bulky shape and enclosed surface.
Coil heaters offer far greater freedom for product designers:
| Coil Heaters | Tubular Heaters |
|---|---|
| Easily customized shapes (spiral, ring) | Fixed bending radius |
| Variable spacing for airflow optimization | Limited layout flexibility |
| Compact design fits slim air fryer tops | Larger footprint, bulky dimensions |
Whether you're building a compact 2L model or a large 8L dual-basket fryer, coil heaters can be shaped and sized accordingly.
Modern air fryers increasingly use intelligent cooking modes and variable power levels. Coil heaters are ideal for this:
Compatible with PWM, PID, and triac control.
Can respond instantly to power adjustments.
Allow for energy-saving modes, boost cycles, and warming features.
Tubular heaters, with their slower response time, are less suitable for these applications.
Coil heaters may seem more exposed, but when designed correctly, they can be:
Equipped with high-temperature mica insulation
UL/CE certified
Protected against grease, moisture, and corrosion
Many coil heaters use SUS304 or SUS316 resistance wire, offering better durability in high-fat cooking environments compared to some tubular units.
Coil heaters can often be more economical than tubular heaters in high-volume production:
Simpler structure = fewer fabrication steps
Lower material usage
Easier to assemble into the top plate or fan unit
This allows you to reduce unit cost without compromising performance.
More brands are switching to convection coil heaters because they offer:
✅ Faster cooking performance
✅ Better heat circulation
✅ Design flexibility
✅ Smart control compatibility
✅ Lower cost per unit
✅ A better user experience
At Jaye Heater, we specialize in helping air fryer OEMs transition to custom-designed convection coil heaters. Whether you're designing a new product or upgrading your current model, we can help you create a smarter, more competitive heating system.
📩 Get in touch with our technical team to learn more or request a sample today.
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