I've had my YS640 for almost exactly 2 years. I don't use a cover, but it is on a covered porch and never gets wet - but I do live in humidity rich TN!
I notched that my diffuser plate and door are heavily rusted. Is this normal or do I need to be doing something different to care for it to prolonged it's life? (I have never dony anything but vacuum it off)
Thanks
Chris