You're probably right about "mist chamber" containing the element.
However, at $52, I'm not interested.
Besides, I'm now generally down on Sears customer support. I doubt if
I will purchase from them again.
BTW, I just found a unit on ebay, made by Holmes. Pretty similar to the
Kenmore unit except it comes with a FIVE year warranty. That's almost
unheard of, in view of the short life of these systems. AND, only
$29.80 + $7.95 for shipping, brand new factory sealed. I read a review
somewhere on this unit, and it was favorable.
Does it really have a heating element? All the hot mist humidifiers I
have seen use electrodes that pass current through the water and heat
it directly. Nothing really to go wrong except after a few years the
electrodes corrode. Maybe you just need to replace the fuse.
CAUTION The electrode type are VERY dangerous to work on. DO NOT PLUG
IT IN WHEN THE ELECTRODES ARE EXPOSED.