I bought one at the end of season last year. Used it on Monday night to heat a small bathroom when my 9 year old was taking a bath and noticed a slight odor, thought it was just because if was the first use. I used it again the following night, and as soon as I plugged it in sparks flew out the front and fire out the back. Scared me to death, but luckily it was me and not one of the kids. Thank goodness for the GFI outlet as well. I tried to call customer service and no one would answer. I sent an email and no response. My husband had planned on using this to heat the bathroom overnight, prior to morning showers. Thankfully this did not happen.
Don't know what to do with it now. Was going to throw it out, but am still pretty angry, and wanted to warn other folks about the dangers of this thing.