This replacement filter is for the Hamilton Beach True Air 05520 and 05521 humidifiers. The filter replaces quickly with drop in installation and accommodates a 4-gallon steam output. It is best used in rooms up to 1200 square feet in size. You need to change filters every three months and clean humidifier weekly to prevent mold and germs.
A humidifier protects household occupants from static electricity shocks, prevents dry, itchy skin, allows stressed lungs to breathe with more comfort, and infuses the room's environment with needed moisture to furniture, fabrics, and plants for long-lasting health.

However if not properly cared for, a humidifier becomes the breeding ground for assorted viruses, bacteria, mildew, and mold. In other words, the soothing moist air exhaled by humidifier might be much more harmful than helpful in the long run.
To keep the air clean and amply humidified, it is essential to regularly replace the humidifier's filter, where the impurities often fester. Hamilton Beach recognizes the importance of clean filters by offering this replacement filter from their True Air line. This filter fits Cool Mist models 05520 and 05521. The filter drops into the tank for simple installation.
To extend the filter's life, some users swap out filters weekly to allow the spare filter to dry well to keep mold from developing. Rotating the filter also may prolong its life. No warranty is available for the replacement filter. This item measures 11.1 by 6.8 by 3.1 inches.
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