Are all convection ovens 'true convection' or 'third element' convection?

Not all convection ovens are 'true convection' or 'third element' convection ovens. While true convection ovens have an additional heating element near the fan, which allows for more even heat distribution, traditional convection ovens may simply use a fan to circulate hot air without that extra heating element. The distinction is important as it affects cooking efficiency and results. Always check the specifications of an oven to determine its convection type.