Dry Herb Vaporisers

Understanding dry herb vaporiser designs

A typical device contains a heating system, a chamber for material, an airflow path and some method of controlling power or temperature. Portable devices often include rechargeable batteries and compact electronics. Desktop devices generally have larger housings and may rely on mains power.

Conduction, convection and hybrid heating

Conduction transfers heat through contact with a warm surface, particularly the chamber wall. The temperature of the wall and the contact between material and chamber both affect heat transfer.

Convection uses moving heated air as an important source of energy. Airflow, heater design and the geometry of the chamber can affect how evenly heat is transferred.

Hybrid designs use both mechanisms. The categories describe engineering principles rather than an independent measure of quality or medical performance. Two products labelled “convection” can still have very different sensors, airflow arrangements and control systems.

For a deeper explanation, see the Technology & Engineering knowledge hub.

Portable and desktop formats

Dry herb heating systems appear in different physical formats. A compact enclosure may combine the heater, battery and controls into one handheld body. A larger enclosure may have a separate power supply and a longer or more complex air path.

These are typical design patterns, not rules. Read the specification for the exact model rather than inferring features from the category name. Explore portable vaporisers and desktop vaporisers for the differences between the two formats.

Materials, construction and temperature information

Heating-chamber materials may include stainless steel, ceramic or other manufacturer-specified materials. These materials have different thermal properties, but their presence alone does not establish safety, performance or suitability for medical use. The complete product design and its intended purpose matter.

A displayed temperature is also not necessarily a direct measurement of the material inside the chamber. Depending on the device, the value may be a target setting, a heater sensor measurement or an estimated operating temperature. Heating time, thermal stability and chamber conditions can vary.

Look for documentation that distinguishes an adjustable setpoint from a measured temperature and explains the sensor location, if disclosed. For devices with a battery, also check the manufacturer’s charging guidance and any published restrictions on charging equipment.

Components and compatibility

Some dry herb devices use removable mouthpieces, screens, gaskets, cooling units or chamber accessories. Names alone are not sufficient to confirm that a replacement fits. Compatibility may depend on model generation, part number, dimensions and manufacturer instructions.

See the information on vaporiser accessories and replacement parts for the differences between additional components and model-specific replacements.

Care and documentation

Manufacturers may specify cleaning frequencies, approved cleaning materials, drying requirements and procedures for replacing wear components. Follow the model’s instructions for use. In particular, do not assume that solvents suitable for a removable metal or glass piece can also be used on seals, electronics or coatings.

If a battery is swollen, visibly damaged, unusually hot or emitting an unexpected odour, stop using the device and follow appropriate battery-safety guidance. Do not open a sealed battery pack or attempt an improvised repair.

Dry herb vaporisers and Australian rules

In Australia, the regulatory position of a device is influenced by its intended purpose and how it is supplied. The Therapeutic Goods Administration (TGA) has separate information about therapeutic vaping goods and medicinal cannabis vaping devices. The existence of a product description or a general technical category does not establish that a specific model is included in the Australian Register of Therapeutic Goods (ARTG).

For regulatory information, see the Australian vaporiser laws knowledge hub and the TGA’s medicinal cannabis vaping device guidance.

Frequently asked questions

What is the difference between a dry herb vaporiser and an e-liquid device?

A dry herb device has a chamber designed for the material specified by its manufacturer. An e-liquid device uses a different liquid-handling arrangement. Their components, intended purposes and regulatory treatment may differ; they are not interchangeable merely because both use heat.

Does every dry herb vaporiser use convection?

No. Conduction, convection and hybrid designs all exist. The manufacturer’s technical documentation is the starting point for identifying the stated heating system.

Is a portable vaporiser necessarily a dry herb vaporiser?

No. Portable refers to physical format, while dry herb describes the type of chamber or system. The two labels overlap, but neither automatically implies the other.

Does a digital temperature display show the exact chamber temperature?

Not necessarily. Some displays show target settings, while others are based on sensor measurements or estimates. The device’s technical documentation should explain the meaning of the reading.

Are mouthpieces and screens universal?

No. Dimensions, materials and fitting mechanisms vary. Verify the model, version and manufacturer part number before assuming compatibility.

Does “dry herb” mean a device is approved for medicinal cannabis?

No. Medical intended purpose and ARTG status must be checked separately against official TGA information for the exact device.