An ultrasonic humidifier is a new purchase for me. It's possible that the flaw lies not with any one company or any one model, but with the technology as a whole. For what it's worth, I dumped the humidifier onto eBay's bargain basement. If the cost is too high, an air washer is an option to think about. It doesn't make you feel awful, but it does have its own issues, such the need to clean the drum and its removable components on a regular basis.
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