Convection or Conduction? Vaporizer Heating Methods Explained

A convection vaporizer heats the filling material with hot air that flows through the chamber. A conduction vaporizer heats the chamber wall, which passes the heat on through direct contact. A hybrid combines both principles. Which heating method suits you better depends on how you use your device: in short draws, in longer sessions, on the go or at the table.

What is the difference between convection and conduction in a vaporizer?

The difference lies in the path the heat takes to the filling material: with convection, flowing air carries the heat; with conduction, it passes through direct contact with a hot surface. Both are basic concepts of heat transfer found in any physics textbook.

• Conduction (heat conduction): A heating element warms the metal or ceramic chamber. The material touching the chamber wall is heated directly; the heat travels inward from particle to particle.
• Convection (heat flow): The heating element warms air. When you draw or a fan is running, this air flows through the filling material and releases heat as it does so.
• Hybrid: The chamber is partly heated directly while warmed air flows through it at the same time. Some manufacturers even state a ratio, such as Arizer with 80% convection and 20% conduction for the Solo III v2.0.

In practice, almost no device is “pure”: even in a convection device the chamber is warm, and even with conduction air flows through the material when you draw. The label describes which heat path predominates, as the manufacturer designed the device.

How does a conduction vaporizer work?

A conduction vaporizer heats the chamber itself, and the material warms up through contact with the bottom and walls. The principle is technically simple and is found mainly in compact, portable devices.

Typical characteristics in everyday use:

• Heat-up time: The chamber usually reaches temperature quickly. For Smono's conduction devices, the manufacturer states about 20 to 30 seconds.
• Handling: The device works regardless of how hard you draw, because the heat doesn't depend on the amount of air. That makes drawing straightforward.
• Filling: So that the material has good contact with the chamber wall, it is packed somewhat more firmly than with convection.
• Evenness: The heat comes from the outside. Material at the edge warms up faster than in the middle, which is why stirring between draws is common with conduction. DynaVap describes exactly this: conduction can extract unevenly if the material isn't stirred or packed properly.
• Operation: Conduction devices usually run in session mode, where the chamber stays hot for a set time.

How does a convection vaporizer work?

A convection vaporizer heats air that then flows through the filling material; ideally, the material doesn't touch a hot heating surface. How much heat arrives therefore also depends on the airflow.

• Heat-up time: There are big differences here. A large desktop device such as the VOLCANO CLASSIC, which Storz & Bickel describes as “pure convection heating”, takes around 5 minutes to reach operating temperature according to the manufacturer. Small portable convection devices are considerably faster according to manufacturer specifications, the Smono 3 for example in about 25 seconds.
• Handling: Draw technique plays a role. On desktop devices a fan often handles the airflow, for example when filling a balloon; with portable devices you draw yourself. A steady, calm draw is usually more helpful than a short, hard one.
• Filling: The air must be able to flow through the material. It is therefore filled loosely rather than pressed. For the Frolic, for example, Limelight recommends filling the chamber to the brim, only tapping it lightly and not packing it tightly.
• Evenness: Because the hot air flows through all of the material, it is reached from the inside and outside. Stirring is needed less often, but filling too densely can cause air channels.

What does hybrid mean in a vaporizer?

Hybrid means that a device deliberately combines conduction and convection: the chamber is heated directly, and warmed air also flows through the material. Storz & Bickel calls this its “patented hybrid technology” in the MIGHTY+ and the VOLCANO HYBRID.

The aim is to combine the strengths of both principles: the direct chamber heat of conduction and the flow-through of convection. How the shares are split differs from device to device. Arizer states 75% convection and 25% conduction for the Go SRT, and 80% to 20% for the Solo III v2.0. Many manufacturers, however, give no ratio at all.

DynaVap is a special case. The VapCap devices have no battery and no electronics. You heat the metal cap from the outside with a lighter (torch) or an induction heater. According to the manufacturer, the hot cap releases heat by conduction, and when you draw, air flows in, warms up at the cap and passes through the material. DynaVap itself calls this a hybrid approach. The cap clicks audibly when it reaches temperature and again when it cools down. The manufacturer stresses: when you hear the click, stop heating. If you keep heating, you risk combustion of the material, according to DynaVap.

What is the difference between session and on-demand operation?

In session mode the chamber stays at temperature for a set time; in on-demand mode the device only heats while you press the button or draw. The operating mode is a property of the control, not of the heating method, but in practice the two are closely linked.

• Session: You start the device, it heats up and holds the temperature until a timer runs out or you switch it off. Limelight describes it like this for the Frolic: the material is kept warm between draws until you're ready for the next one. Useful if you take several draws over several minutes or share a device.
• On-demand: The device only heats for the moment of the draw. On the Frolic, according to the manufacturer, the heater only stays on while the button is pressed; afterwards the heater and chamber retain some of the energy, so the next heat-up happens instantly. Useful if you take single draws with breaks in between.

On-demand operation requires fast heat transfer, which is why you mainly find it on convection-focused devices with a powerful heater. Conduction devices with a solid chamber, on the other hand, usually work in session mode. Some devices offer both; on the Frolic, according to Limelight, even the temperature ranges differ: 40–220 °C in session mode and 40–240 °C in demand mode.

Which device uses which heating method?

The following table shows the heating method of selected devices as stated by each manufacturer. Devices whose heating method we could not clearly confirm on the manufacturer's website have deliberately been left out.

You'll find all devices in our overview of all vaporizers, sorted by brand under Storz & Bickel, Arizer, Smono, DynaVap and Limelight.

Which heating method is right for me?

The right heating method follows from how you use your device, not from a blanket ranking. These questions will help you decide:

1. Do you tend to use the device in one go or in single draws? For longer sessions, session devices are suitable, whether conduction, convection or hybrid. For single draws with breaks, a device with on-demand mode or a mechanical device like DynaVap is more practical.
2. How important is easy handling when drawing? Conduction is more forgiving of different draw techniques. Convection reacts more strongly to airflow and filling, but you need to stir less often.
3. Where do you use the device? At home, desktop devices such as the VOLCANO CLASSIC are an option; on the go, portable devices such as the VENTY or the Frolic with its replaceable 21700 battery.
4. How much effort for cleaning and filling is acceptable to you? Conduction requires stirring; convection requires loose, even filling and clear screens.
5. Do you want to do without a battery? Then a mechanical device is an option, but it requires safe handling of a lighter or induction heater.

If you're unsure, our vaporizer buying guide will help.

Frequently asked questions

Which is better, convection or conduction?

Neither heating method is better in principle. Conduction is easy to handle and usually compact, but requires stirring. Convection flows through the material more evenly, but reacts more strongly to filling and draw technique. What matters is how and where you want to use the device.

What does hybrid mean in a vaporizer?

A hybrid vaporizer combines direct chamber heating (conduction) with hot air flowing through the material (convection). The ratio is set by the manufacturer; Arizer, for example, states 75/25 for the Go SRT and 80/20 for the Solo III v2.0. Storz & Bickel uses the combination in the MIGHTY+ and the VOLCANO HYBRID, among others.

Does convection heat up more slowly?

Not in principle. Large convection desktop devices take longer: Storz & Bickel states around 5 minutes for the VOLCANO CLASSIC and about 40 seconds for the VOLCANO HYBRID. Small portable convection devices, on the other hand, are ready in a few seconds to around half a minute according to manufacturer specifications. Heat-up time depends more on heating power, design and mass than on the principle alone.

Do I need to stir with convection?

Less often than with conduction, because the air flows through all of the material. More important is loose, even filling without pressing. Follow the filling instructions in your device's manual.

Does a DynaVap have a battery?

No. DynaVap devices are mechanical and work without a battery or electronics. You heat the cap externally with a lighter or induction heater until it clicks, then stop heating immediately.

Is on-demand a heating method of its own?

No, on-demand is an operating mode. It describes when the device heats, not how the heat reaches the material. In practice you mainly find it on convection-focused devices with a fast heater.

As of: October 2026. Technical details according to the manufacturer; your device's manual is authoritative.

Sources

• Storz & Bickel: Vaporizer comparison
• Storz & Bickel Support: VENTY Technical Overview
• Arizer: Solo III v2.0
• Arizer: Go SRT
• Arizer: Go SRT Overview
• Arizer: Extreme Q
• Arizer: XQ2 vs. Extreme Q
• Smono: manufacturer shop (product data Smono 3, 5, 70s, Balu, Lunari, Start)
• Limelight: Frolic Thermal Extractor
• Limelight: FAQ
• DynaVap: Hybrid Heating
• DynaVap: Conduction vs Convection
• DynaVap: Respect the Click