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The unit will start to purifier the air as soon as it is powered on. The UV-C sanitizes the air of viruses, bacteria and mold spores, so that is just an added bonus cleaning feature.
Sorry, there was a problem. Please try again later.The UV mode is optional and silent when added to the general air filter being on. I use UV at night just for added virus caution, then run it w/o UV during the day. The unit begins cleaning the air once turned on. There is a top panel of options.
Sorry, there was a problem. Please try again later.need to turn on uv mode, but has light to show it is on
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