So my heater started making an awful noise (loud growling) a few days ago, it also stopped working on any other setting other than high...so I replaced the resistor and when doing that I went ahead and pulled the fan/motor out to find the fan was very wobbly on the motor so I got a new motor and put in. I still had a little bit of a growling noise but pretty quite...Started pickup up this morning and it sounds like hell, could the plastic housing the fan goes into be warped or something?