Why don’t I see visible vapor?

A number of factors affect how much visible vapor is produced, including temperature, grind, chamber packing, herb moisture content, etc. We won’t go in depth here, but a good article can be viewed HERE. The most common factor is the temperature setting. The lower the temperature setting (<400°F), the less vapor you’ll see, but you’ll experience better flavor. At higher temperatures (>400°F), the more visible vapor you’ll see, but at the expense of less flavor.