What the “Poor” Warning Light on Active HEPA+ Means
What the “Poor” Warning Light on Active HEPA+ Means
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The red “Poor” air indicator light is a visual confirmation that the system is working as it should be. The Active HEPA+ devices have two primary operating modes. In the Auto mode, sensors track TVOC’s (Total Volatile Organic Compounds) and 2.5 – 10 micron particulates (dust, pollen,