Today, is the third time I went to Sunpentown Product Support Center in the city of industry for the replacement of the nebulizer in two years.Although they only charged me $15.00 but the quality sucks.The golden plating on the nebulizer starts to have bubbles underneath. This means just about two to three days, it will malfunction. Do they perform life cycle test during design stage?Bad design, bad plating.I only use purified water so there is no deposit in the unit but it doesn't help.This unit has been discontinued.Shame on Sunpentown.