We previously had a whirlpool stovetop/oven. I loved the convection setting and used it all the time. So although the Bosch wall oven is nice I'm  still trying to figure out the convection bake setting. It will preheat to 25 degrees less than what you set it for supposedly because the oven heats more quickly with the fan. But I have found this to not be consistently the case. A loaf of bread was not done in the center on the lower temp. So I'm just setting it up 25 degrees to make it preheat to the temp recipe calls for. It's been a bit of a challenge when baking.