I replaced my 15 year old kitchen aid double convection oven with this oven.  Wish I would have just kept repairing the original oven.  This oven throws off heat like a furnace, takes a very long time to preheat and doesn't brown food very easily.  I cannot bake in the summer nor have a house full of people while I'm running this oven.  Wish I would have done my homework before purchasing it.