Reply To: Are Dehumidifiers safe to use and recommended?

[Jeff Charlton]

Sorry for slow response
Always ventilate. You can have 99% humidity in the Antarctic and its dry as a bone , whereas 30% humidity in death valley Arizona is like a sauna . You need to calculate the amount of water in the air with a Psychrometric chart and I will put one up on the forum. Here we measure RH against temperature to calculate the actual weight of water in the air. So its a combination of two factors temp and RH NOT just relative humidity.
Mould needs warmth, no ventilation and moisture (not wet) and preferably NO UV light (sunlight)