Properly planning and designing a drying room is one of the least considered and most important parts of any cultivation facility.
It is important to provide stability when designing a drying room. This promotes an ideal environment and allows for the gradual release of moisture from the flowers. The key components to control are circulation, temperature, light (or a lack there of), and humidity.
Patience is the most critical factor in the drying process. Moisture needs to be removed, but not aggressively. The whole process of drying is best done over a fourteen day cycle at a steady pace to protect the crop from losing its color and potency. A dry that is rushed will reduce the potency of the end product. Alternatively, if the crop is not dried effectively you are at risk for biological growth.
When designing a dry room, Anden recommends that you pair a dehumidifier (Anden A130) with a steam humidifier (Anden AS35FP). By pairing these components you are able to consistently maintain the environment in the sweet spot for drying. Not too fast; not too slow.
This set-up also simplifies humidity control. The humidity control (Anden 5558), which comes with the steam unit, has the ability to control the dehumidifier as well. This control can easily determine which unit is needed. Since you are only using the singular humidity control, you will never have a situation where the two components are fighting each other.
Careful consideration of how to properly finish your crop can make all the difference in its profitability.