Ventilation - An Essential

Start with Natural Airflow

Ventilation is probably the most important greenhouse control, essential in revitalizing, cooling and dehumidifying.  An air exchange process:

• replaces warm moist air inside the greenhouse with cooler, often drier, outside air.

• provides a fresh supply of carbon dioxide to plants for growth

• helps prevent diseases that start in stagnant air.

Forced Air Ventilation Options

The Basic Accessory Pack

In certain climates or growing environments, you may want to supplement with a powered circulation fan, or, for maximum air exchange and carbon dioxide replenishment, an shutter fan kit such as the one left.

Each of these fan choices can be controlled with timers and/or thermostats.  The appropriate forced air fan for you, if any, will depend upon your local climate, your chosen greenhouse temperature, and your plant selection.  While more circulation is usually better, you can always start small and add ventilation as needed.