Smoking dried herbs has long been the standard, and for many people it is a natural part of the experience. But as technology moves forward, more and more people are also investing in a vaporizer for dry herbs. It is not about replacing old traditions, but about trying a method that gives more control, clearer flavour and better efficiency.
Once you understand how vaporization works, it also becomes easier to choose the right vaporizer and to bring out aromas and flavours that would otherwise be lost in the smoke.
At a glance
- A dry herb vaporizer heats herbs without burning them.
- Most vaporizers work between roughly 160 and 230 °C, far below the temperature of a burning ember.
- Conduction heats through direct contact, convection with hot air.
- Lower temperatures bring out the terpenes and the flavour.
- Studies have shown that vapour contains far fewer combustion products than smoke.
How does a dry herb vaporizer work?
When herbs are burned with an open flame, things get very hot. A burning ember can reach several hundred degrees, often above 600 °C. At those temperatures many of the delicate aroma compounds, the terpenes, are destroyed almost instantly.
A vaporizer instead works like a small precision oven. It heats the material to the point where the aromatic compounds turn into vapour, usually between 170 and 215 °C, but stays below the point of combustion. The result is a vapour that carries the herb’s own character rather than the taste of fire and paper.
In a 2004 study, the vapour from a vaporizer at 185 °C contained almost only the compounds found in the plant, while smoke from the same material contained more than a hundred other compounds formed by combustion.
Why choose a vaporizer?
Clearer flavour and more nuance
For anyone who appreciates flavour, a vaporizer is an obvious tool. Every strain has a unique terpene profile, the essential oils that give the herb its aroma and taste. At lower temperatures, around 180 °C, they come through more clearly. You will notice hints of citrus, pine, pepper or berries that smoke otherwise hides.
Efficient and economical
With combustion, part of the material is lost to side smoke and heat. In a vaporizer, the material is heated in a closed chamber and nothing burns away unnecessarily. That often means you need less material, and a good vaporizer can pay for itself over time.
A smoother experience
Smoke can feel harsh on the throat. The vapour from a vaporizer is cooler and smoother, because there is no combustion. In an American study from 2007, a vaporizer caused virtually no rise in carbon monoxide in exhaled air, while smoking did.
Materials affect the vapour
When you compare different models, the materials matter for both temperature and flavour.
- Ceramic heating chamber: A neutral material that adds no flavour of its own. Gives clean vaporization and holds heat evenly.
- Stainless steel heating chamber: Heats up quickly and is very durable. Suits you if you want a robust vaporizer that delivers dense vapour straight away.
- Titanium chamber: Light, durable and used in several convection models for its clean flavour.
- Borosilicate glass air path: Glass cools the vapour and adds no off-flavours on the way from the chamber to the mouthpiece.
Conduction or convection?
Conduction: direct contact
Here the herbs sit directly against the heating element, a bit like in a frying pan. Conduction vaporizers heat up quickly, are easy to use and often compact. They suit you if you prioritise convenience and discretion.
Convection: hot air
Here the heat source never touches the material. Instead, air is heated and drawn through the herbs as you inhale. This gives more even vaporization and is often considered to give the best flavour. The material is mainly affected when you actually take a draw.
Many modern vaporizers combine both techniques in a so-called hybrid design. A 2016 study comparing several vaporizers showed that both efficiency and the content of the vapour differ between models, so the quality of the device itself matters.
Temperature and terpenes
Different terpenes turn into vapour at different temperatures. Myrcene has a boiling point of around 167 °C, limonene around 176 °C and linalool around 198 °C. That is why flavour is most noticeable at lower temperatures, while higher temperatures give more vapour but a toasted taste. When the vapour fades and the flavour reminds you of toast, the material is spent.
How to get the most out of your vaporizer
- Grind evenly: A vaporizer works best with an even, medium-fine grind. It pays to use a good grinder. Read more in our guide what is a grinder.
- Pack correctly: Fill the chamber evenly but do not press too hard. Air needs to flow freely.
- Keep it clean: Brush out the chamber after each session and clean the mouthpiece and air path regularly. That way the vaporizer keeps its clean flavour. The same goes for your grinder, and you can read how in our guide how to clean a grinder.
You will find all our models among our vaporizers.
What is a dry herb vaporizer?
A dry herb vaporizer is a device that heats dried herbs so that the aroma compounds turn into vapour, without the material burning.
What is the difference between conduction and convection?
With conduction, the herbs sit directly against the heating element. With convection, air is heated and then drawn through the herbs, which gives more even vaporization.
How do I know when the material is spent?
When the vapour fades and the flavour reminds you of toast, it is time to empty the chamber. The material is then usually evenly brown.
Does it smell less than smoke?
Yes, considerably. Vapour does not cling to fabrics in the same way as smoke, and the aroma is more like warm herbs and fades quickly.
Is a vaporizer hard to clean?
No. Brush out the chamber while it is still lukewarm and do a more thorough clean with isopropyl alcohol now and then.
Sources
- Gieringer D, St. Laurent J, Goodrich S. (2004). Cannabis Vaporizer Combines Efficient Delivery of THC with Effective Suppression of Pyrolytic Compounds. Journal of Cannabis Therapeutics, 4(1), 7-27.
- Abrams DI, Vizoso HP, Shade SB et al. (2007). Vaporization as a Smokeless Cannabis Delivery System: A Pilot Study. Clinical Pharmacology & Therapeutics, 82(5), 572-578.
- Lanz C, Mattsson J, Soydaner U, Brenneisen R. (2016). Medicinal Cannabis: In Vitro Validation of Vaporizers for the Smoke-Free Inhalation of Cannabis. PLoS ONE, 11(1), e0147286.
