It's Not The Fan Motor!

I used this model last winter with no problems.Then,when I turned it on the first time this season the motor won't turn the fan.Closer inspection reveals the real problem with these units.The motor also turns a small plastic vein pump in the bottom of the housing(this is what makes the design work) that is of poor quality and gets jammed easily with lime deposits,etc,causing the motor to stall and burn up.Using strictly distilled water may help longevity.This product needs to go back to the drawing board!