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Title: Hamilton Beach True Air 05920 Blue Humidifier Filter
Review: The humidifier did the job for me, keeping one room at 50% humidity and helping with the rest of the house too. Quiet and easy to look after, I have not had any problems in two seasons of use.If you have hard water, the filter will only last about 3 weeks. I have found that I can rejuvenate them overnight by soaking them in dilute hydrochloric acid, but you need to know what you are doing with powerful acids. As an alternative, you can probably get more life out of the filters with conventional kettle defurring products such as vinegar, but I haven't tried them.Keeping up the humidity in winter allows a lower comfortable temperature. Helps if you have dry skin and is essential if you have delicate wooden things like a classical guitar. Well worth the trouble.
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