Mistbox is operating correctly if it mists during hot parts of the day when the AC kicks on.

When should I expect it to mist?

Mistbox makes a decision to mist based on whether the AC is running or not and climate conditions like temperature and humidity. When your AC turns on, Mistbox wakes up and checks weather data. If the temperature is high enough and humidity low enough, it will mist. 

Does it mist the whole time the AC is running?

Mistbox does not always run the entire time your AC is on. The mist may turn on and off during an AC cycle to create the most savings using the least amount of water.

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