CFM calculator

Plan the extractor power required.

This calculator determines precisely the right air extractor to install in order to thoroughly ventilate your grow room.

The grow room air should be renewed every 5 minutes.

This calculator is used to evaluate your total extraction and air filtration needs. Add the filtration fan CFM total with the air extraction ones in your grow room in order to be the closest possible to the recommended value of this calculator. The air in your grow room will then be renewed or filtered at least every 5 minutes, recommended every 2.5 minutes.