The simplest and the least precise way to determine the dryer’s efficiency is by choosing it according to your room’s cubic capacity. It is recommended, that an hourly air flow through the device is at least 3,5 times higher than the total volume of the room.

Air flow through the air dryer:


- the volume of the stream of air flowing through the dryer (air flow) [m³/h]
- the cubic capacity of the room being dried (width x length x height) [m³]

This is a simplified method, which can be used only when determining humidity growth is hard.

Example

room:
width - 4 m; height - 3 m; length - 5 m

calculations:
= 4 x 5 x 3= 60 [m³]
= 3,5 x 60= 210 [m³/h]

The smallest dryer that can be used in this room is, for example, MASTER DH 721 with a flow of 240 m³/h.

Using a larger device will shorten the drying time.