I got burned through this recall process. I had a Danby/Premiere, and because the list of affected models is so wide, I wasn't 100% sure mine was affected.
I called the 800 number, we worked through it. I recall I needed to send pictures of it. After that it was determined I was affected and I was sent a recall package in the mail.
Part of that included removing the serial number sticker, and cutting off the end of the power cord and sending them in.
I did that and later get a surprise: sorry, your model isn't covered after all. WTF?!
I re-terminated the end of the power and went back to using it. But I'm still peeved that they wasted my time and butchered my humidifier. So, they not only had a big quality control issue but they also don't seem to be able to keep track of all these brands and models they were pumping out.