Ventilation Calculation

This tool enables you to easily calculate the size of fan needed to ventilate any size grow room for up to a maximum of 24 air changes per hour.  This simple to use tool is a must for all indoor growers using fans.

1- Enter the length, width and height of your grow room in metres.
2- Enter the number of Air Changes you need every hour.  From 1 to 20.  We recommend you start with 5 air changes per hour.

3- The result displayed indicates the fan you will require in terms of air flow in metres per hour.

We recommend Ruck Fans as all Ventilation uses.  Available in either Plastic or Steel, when using Ozone, steel fans are required due to the action of Ozone on plastics.