Product review (5 stars): Great Machine!
Prior to receiving this product I noticed a lot of yellow "stuff" sticking to the blades of the fan and sides of water container.  Now i risne and wipe out about every 2 weeks.  No yelllow "stuff" present.  I live in Tucson AZ USA and we have very hard water so I buy distilled water for my Airwasher.  t's about a dollar a day but it worth it.  Great Machine!