Greenhouses are important for growing modified plants. However, the levels of humidity can be quite high sometimes, especially when your greenhouse is located in a cold area. The problems brought about by high humidity in greenhouses are well known–there’s always water dripping off from the roof increasing chances of Botrytis. Also there could be formation of powdery mildew and other fungal growth. Unfortunately there has always been a problem combating humidity in greenhouses. Experts say it’s important to consider environmental solutions like careful irrigation practices. However, there is also the need to dehumidify the air. At this point, we would like to recommend dehumidifiers that can work well according to the space in your greenhouse. If you run a small greenhouse you may prefer the Frigidaire FAD704DWD. It’s the best seller and very effective. If you have a larger greenhouse, then a large greenhouse dehumidifier could be perfect. Check our review on commercial dehumidifier.