Hengs Vortex II - waste of money...
Went through two units before throwing in the towel on this piece of junk. First one the fan blade was so badly balanced and out of round it rattled like crazy. Returned it on Amazon as defective. ...
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I know there's lots of Chinese junk out there, but I'm not automatically categorizing. My WFCO is over 14 years old and still maintains my batteries when necessary. Granted it's not in the same league as many others, but it's not a battery boiler like some others either. My Heng's Vortex has more than paid for the initial cost. It will hopefully be quite some time before I have to come back and complain about the Heng's roof coating I put on last week.
