Calculate the air extraction required for good indoor cultivation.

Air extraction calculator

Please fill in the dimensions (length, width and height) of your grow room in centimeters (cm). This information is essential for calculating the total volume of the chamber and estimating the airflow adapted to your needs

Length (cm) : Width (cm) : Height (cm) : Number of air changes per hour : Use of a carbon filter (-30% efficiency)

Recommended flow rate: m³/h

Air renewal per hour (ACH)

The air renewal per hour, often referred to by the acronym ACH (Air Changes per Hour), represents the number of times the air in your grow room is completely renewed in one hour. Effective air renewal is crucial for maintaining optimal temperature and humidity conditions, which promotes plant health. A high-performance exhaust system also helps maintain gas balance (CO2, O2), which is essential for the growth of your crops.

General recommendations for ACH:

Vegetative plants: An air renewal of 15 to 30 ACH is often recommended.
Blooming plants: An air renewal of 30 to 60 ACH is preferable to manage heat and humidity.
Small rooms or with good ventilation: ACH can be lower, between 5 and 10, but it depends on the extractor's airflow and the space's ability to manage humidity and temperature.

This allows you to adjust the air extraction according to the needs of the cultivation while considering the specifications of the equipment used.

Using a charcoal filter

If you use a carbon filter in your growing space, it is important to include it in the air extraction calculation. The carbon filter serves to eliminate odors and purify the air, but it can also limit airflow. Check the box if you are using a carbon filter so we can adjust the extraction calculation accordingly.