Noise is one common concern that is considered when deciding which purifier is best for you. Noise is characterized as an unwanted sound that is measured in decibels (dBa). Decibels indicate the noise level of a device. As you can see in the charts below, Alen Purifiers, even at the highest fan speeds, typically only produce the equivalent noise of moderate rain.
BreatheSmart 75i - Lowest Speed 25 dBa | Highest Speed 49 dBa
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BreatheSmart 45i - Lowest Speed 23 dBa | Highest Speed 49 dBa
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BreatheSmart Classic - Lowest Speed 42 dBa | Highest Speed 56 dBa
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BreatheSmart FIT50 - Lowest Speed 32 dBa | Highest Speed 49 dBa
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BreatheSmart FLEX - Lowest Speed 25 dBa | Highest Speed 50 dBa
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