Not known for cutting corners, Dyson spent $60.4 million to develop the humidifier, and went through 643 prototypes. Cheaper models, like those from Air-O-Swiss or the $60 Vicks V4500, will achieve similar ends as the Dyson, but they require near-daily cleaning by hand to be kept hygienic. Photo 4 of 5 in Dyson Humidifier Will Keep Your Air Clean Using Bacteria-Killing Technology by Alexander George

Dyson Humidifier Will Keep Your Air Clean Using Bacteria-Killing Technology

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Not known for cutting corners, Dyson spent $60.4 million to develop the humidifier, and went through 643 prototypes. Cheaper models, like those from Air-O-Swiss or the $60 Vicks V4500, will achieve similar ends as the Dyson, but they require near-daily cleaning by hand to be kept hygienic.