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PureGuardian H4500 Ultrasonic Warm and Cool Mist Humidifier Review

The PureGuardian H4500 Humidifier utilizes clean silver technology for the prevention of bacteria and mold growth in the water tank. When you humidify drinking water, you avail a healthy breathing environment by curbing the spread of germs and bacteria into the air. This humidifier has the option of producing either cold or …

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