Greenhouses hold large moisture content needed to promote plant growth. However, too much moisture can do exactly the opposite and stop plant growth, especially in species that require less heat and humidity. Moreover, a damp environment can promote bacterial and fungi growth, encouraging pest infestations which can damage the plants. A drier greenhouse environment is the best defense against plant disease. If you are experiencing such problems with your greenhouse, it may be wise to take a look at these greenhouse dehumidifiers reviews and see if such appliances are the best solution for you.

Plants transpire approximately 99% of the amount of water they receive, so a dehumidifier should be able to remove approximately the same amount. If you have 30 plants receiving 15 gallons total water per day (120 pints) and you have an air conditioner that handles 15-20% of the load, you will need a commercial dehumidifier that removes 100 pints. Agam’s Ventilated Latent Heat Converter (VLHC) for large greenhouses is a great dehumidification system for cold-climate greenhouses. The dehumidifier takes humid air and converts the water vapor into water and heat. Besides saving you 50-70% energy, it reduces the expenses for CO2 enrichment and facilitates chemical-free plant growth.

If you have a small greenhouse, consider using a home model like the Frigidaire 70-Pint dehumidifier. This unit has a continuous drainage function and is backed by one of the best humidifier brand names. This model has two fan speeds and works great even at temperatures between 37-40 degrees F. The dehumidifier can remove up to 9 gallons of moisture daily and can cover large areas up to 1,400 square feet. According to many dehumidifiers reviews, sometimes the drain hose is problematic, but not many users reported this issue.

Quest dehumidifiers also offer a complete line of industrial grade dehumidifiers for indoor gardening. Their products are some of the most efficient on the market and a can remove up to 205 pints of water with less energy than other models. According to most Quest dehumidifiers reviews, the Quest Portables are great for growers who want convenience and flexibility, as they can easily be moved from one room to another. The Quest PowerDry 1300 and RDS10 can remove up to 65 pints (8 gallons) and 80 pints (10 gallons) of moisture from the air on a daily basis. The Quest PowerDry 4000 is designed for high grade growers. With a capacity of over 176 pints (22 gallons), this model can handle any challenge.

Before making a final decision, make sure you know exactly what you need. Because every plant is different, it’s hard to choose just one model. Keep in mind that a 45–55% RH is the best for most plants, as many pests find this environment unappealing.

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