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Set up your sensor, connect your home, and make sense of your air.
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For most outdoor-driven pollutants, indoor concentration divided by outdoor concentration is the single most diagnostic number you can work out from your readings. It tells you whether your house is sealed, filtered, or leaking.
Warm air rises, cool air falls, and exhaust fans push the balance around. The result is that pollutants move through a building in predictable directions, the basement supplies the bedrooms more than you think, and a bath fan can backdraft a water heater. The dashboard makes the patterns visible.
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