Conduction and Convection are the way your herbs heated which is very different. They also their advantages and disadvantages.
Conduction Vaporizers – These work by ‘touch’. Similar to cooking on a stove, the herbs come into direct contact with the heating element which then evaporates the ‘active compounds’ for you to inhale.
In contrast, a convection herb works more similar to an oven; it first creates a hot atmosphere inside the oven. It is the hot air that then heats your herbs.
Convection herb vaporizers are very vogue at the moment because they guarantee no combustion and the most efficient heating.
However, conduction vaporizers have their advantages too. A conduction vaporizer can heat vaping temperature in under 20 seconds. Because conduction technology has been around longer they are often cheaper as well; the Black Mamba and the PAX range of Vaporizers are examples of conduction vaporizers done well.
Storz & Bickel products are famous for having hybrid heating technology. Hybrid ovens offer the best of both conduction and convection whilst minimising the cons. Hybrid ovens are super-efficient and maximise cannabinoid extraction but they come at a cost!