Simple and Wonderful!!!!!
It's worth it!<br />Purchased one 2,000 yrs. ago (approx.) and still works like new.  Has a permanent filter, clean by running under the faucet, dry and re-insert - very simple!  No filters to purchase again and again.<br />Cleans air by reversing ions and bad particles fall on carpet - vacuum needed - or get caught in permanent filter.  Even cleans smoke/mold/animal dander/fishy smells etc.  Really cleans anything undesirable.  Has multiple settings for cleaning: low/high/super clean.<br />Unit runs pretty quiet, but not totally.  I'm so thankful for clean breathable air I just don't care.<br />Hopefully you want an air cleaner to last 2,000 years or longer.  I highly recommend this one!
Rating: 5 stars