I left my iron on all night the other night and part of the next morning, when I went in the room I could smell faintly like something was buring and I forgot to unplug my iron, Boy I was lucky and it was a rowenta just bought it about 7 months ago and now afraid to plug it back in. The iron does not have a auto-shut off or a off-on button you have to plug it in and unplug it. I just unplug it so often I though it was off,whew was I lucky.