A very general answer to this question is the following. Low and slow temperatures up to say, 300 degrees, pellet consumption will be between 1 and 1 and a half pounds of pellets per hour. Therefore, a 20-pound bag of pellets should last between 13 and 20 hours.

However, when it comes to grilling at temperatures of 400 degrees plus, then pellet usage will be closer to 2 pounds per hour, maybe more. Therefore, a 20-pound bag of pellets would last 10 hours or less.

Keep in mind, these are very general figures. Smaller pellet grills such as portable and tabletop models will use less due to their smaller cooking chambers.

Likewise, twin-wall insulated pellet grills and smokers, along with ceramic models, will also use fewer pellets per hour than average. You can browse all of these types of pellet grills/smokers through the link to our database below.