There are different types of greenhouse fans available on the market today to choose from.
While vents are an integral part of greenhouse airflow and climate control, vents alone aren’t sufficient if you are looking to maintain optimal temperature and humidity levels all year.
Fans will help you break up air stratification. Since hot air rises, you can expect hot air to accumulate and stagnate at the top of your greenhouse while cooler air settles down below. These layers stay stagnant unless you employ a fan to break them down. There are different types of greenhouse fans, to begin with, exhaust fans. Exhaust fans typically don’t function alone. They work in conjunction with vents or shutters placed on the opposite side of your greenhouse. As warm air is drawn out of your greenhouse through the exhaust fan, the negative indoor pressure pulls in new air through the vents on the opposite side of your greenhouse. Circulation fans are huge, metal-caged fans typically used in commercial greenhouses. They can be mounted on frame posts, ceiling rafters, or even set on the floor. These HVAC systems provide a more flexible airflow pattern than a cross breeze. Solar-powered fans harvest energy directly from the sun to power themselves. Any type of fan can be hooked up to a photovoltaic panel to convert into a solar-powered fan. Thermostatic fans automatically turn on or off depending on a pre-set temperature. Using a connected thermostat fan increases your greenhouse’s energy efficiency, lowering your monthly electricity bills. The fan and pad evaporative cooling is another type of fan that uses the heat in the air to evaporate water, cooling your greenhouse.