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We measure how much noise the purifiers make, add up their long-term costs for energy consumption and replacement filters, consider the ease of operation and maintenance, the presence or absence of distracting lights, the simplicity of the controls, and their physical size and aesthetics

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Archived from the original on 25 September 2013

I have spoken with manufacturers, engineers, academics, and experts

This guide will cut through the hype, break down what you actually need to know, and help you find the right machine for the job

These type of portable air purifiers are a valuable addition in homes, especially for individuals with respiratory issues such as asthma, allergies, COPD, cardiovascular conditions, or weakened immune systems, as well as older adults, pregnant women, and young children, Zhao says