I had it installed yesterday and it doesn't heat up, which is kind of its only job. It gets two stars because the grill does work - as the only source of heat in my kitchen, I'm finding out a hundred new ways to cook food under a grill that I never knew existed. AO told me to contact the manufacturer, then when I complained, booked in an engineer themselves but not for another two weeks time. I'm sure it's a great oven when it works - I just wouldn't know what that was like.