My old man always taught me to never use an extension cord (surge suppressor was before his time) of any kind for anything with a motor or heating element if it's going to be unattended.
Window fans, especially those made in China are notorious for causing fires.
Had a 20" fan seize up while running just a couple weeks ago. It was made in China, but wasn't cheap or I thought... lasted through 1 summer before burning out.
I don't ever leave these items plugged in when away from home.
Phil
