How To Choose The Best Dehumidifier for Greenhouse Discussion

Greenhouses are special structures constructed to grow plants that require controlled climatic conditions. The purpose of a greenhouse is to protect the plants grown in it from extreme external elements that can adversely affect their growth, such as sunlight, moisture, temperature, and so on. Temperature and relative humidity are two important factors to be considered in a greenhouse. For such a controlled environment, you need to pay attention to these two factors so that your plants are not adversely affected by using a dehumidifier for greenhouse.

Because excessively high humidity can lead to the growth of molds and harmful fungal diseases. High humidity can also lead to the reduction in transparency of your greenhouse, due to excessive condensation on the walls.bOne of the ways to keep the humidity in your greenhouse under control is by using a dehumidifier. Therefore, it is advisable to get a dehumidifier for a green house in order to adjust the temperature and humidity conditions in your greenhouse to optimal levels.

Top 5 Best dehumidifier for greenhouse recommendation in 2021

  • >>Pro Breeze Electric Dehumidifier
  • >>Waykar 2000 Sq Ft Dehumidifier
  • >>Vacplus 30 Pints Dehumidifier
  • >>Homelabs 1,500 Sq. Ft Energy Star Dehumidifier
  • >>ALROCKET Dehumidifier 35oz (1000ml) Small Dehumidifier for 2100 Cubic Feet

What Should Be The Ideal Greenhouse Temperature And Humidity?

The ideal greenhouse temperature should be somewhere between 80 – 85 degrees Fahrenheit. Similarly, the ideal humidity level should be 50 – 70%. This is why you need a dehumidifier especially if you live in an area where the humidity level and temperature tend to rise to excessive levels. In such places, not using a dehumidifier in your greenhouse can lead to a wide range of issues.

High humidity may also drive the internal temperature to rise high and this causes increased energy consumption and thus, leads to higher costs to keep the temperature at a favorable level. Nevertheless, a dehumidifier gets rid of the excess moisture problem and conserves energy at the same time. It also ensures that the environmental conditions are much better and conducive for your plants to grow and thrive.

Read also: Understanding The Best Humidity For Indoor Plants Survival

Things To Consider When Choosing The Best Dehumidifier For Greenhouse

Dehumidifiers differ in size, quality, and design. Most of them have a similar mode of operation. This might make choosing the ideal unit for you a tad bit difficult. The following factors are some of the relevant factors to check when considering the type of dehumidifier needed for your greenhouse 

  • The size

To choose a perfect size of a dehumidifier for your greenhouse, airflow, room size, and humidity need to be examined. The bigger the room, the larger the area to be dehumidified. Also, the higher the humidity level of the greenhouse, the larger the dehumidifier size needed. 

Maintenance: It is advisable to get a piece of equipment that can be maintained easily, does not need to undergo regular maintenance, and can efficiently work for long periods.

  • Operation ease: 

The dehumidifier should not be tedious to operate. It should have automatic features such as a humidistat to control the humidity, and auto-shut-off feature to prevent overflow, and other features that will make it quite easy and convenient to use. 

  • High efficiency

The efficiency of the moisture removal should be high with low consumption of energy. 

  • The layout of the Facility: 

The layout, as well as space considerations, need to be evaluated. Especially for planting areas where dehumidification equipment was not originally added to the blueprint. 

  • Cost: 

This is very critical in the selection of the type of dehumidifier to purchase. The cost of a split system may be cheaper upfront but it may eventually be costly to maintain over extended periods of use.

Top 5 Dehumidifier for Greenhouse Review

1. Pro Breeze Electric Dehumidifier

How To Choose The Best Dehumidifier for Greenhouse Discussion

This Pro Breeze Electric Dehumidifier comes with a 16-ounce water tank that allows it to remove up to 9 ounces of water at once. It effectively works within an effective temperature range of 15°C / 59°F and will not function at temperatures below 41F. This humidifier will be an ideal choice for rooms as large as 150 sq ft (1200 cubic feet).

It has an inbuilt thermo-electric cooling technology instead of a compressor, and this makes the unit ultra-quiet and an ideal choice for those that tend to get distracted or disturbed by a loud noise. The dehumidifier turns itself off automatically once it is full. There is a LED light indicator that would turn on showing that the water tank is full and needs draining.


  • Consumes low power
  • Portable and easy to use
  • Silent operation


  • It can get very hot when used for extended periods

2. Waykar 2000 Sq Ft Dehumidifier

Waykar 2000 Sq Ft Dehumidifier

The Waykar 2000 Sq Ft Dehumidifier has a sleek and attractive look. It is ergonomically designed with handles and wheels that can rotate 360°. This humidifier is ideal for spaces as large as 2000 Sq Ft and can remove up to 34 pints of moisture daily.

One of the top highlights of this unit is that it can be drained both automatically and manually. For automatic draining, there is a 6.56 feet drain hose that can be attached to the drain hole to get rid of the excess moisture removed from the air.

There is also an indicator light that shows when the tank is filled up, and the unit automatically goes off until the tank water is emptied. There is also a filter that can be rewashed and reused, which clean air quality.


  • It is very easy to move
  • It is can be drained either manually or automatically
  • Features a removable and washable filter.


  • It runs a little too loud

3. Vacplus 30 Pints Dehumidifier

The Vacplus dehumidifier with a tank capacity of 1350ml can drain up to 30 moisture pints daily. This is an energy-saving dehumidifier with a timer that can be programmed to suit your specific preferences. This unit comes equipped with a high-quality compressor that can potentially increase the efficiency of dehumidification by as much as 30%.

Once a target humidity is set, Vacplus Dehumidifier will monitor the level of moisture in the atmosphere and readjust its operation to remain at the preferred humidity level that has been set. It has a timing boot and can also automatically shut itself off. The humidifier’s drain hose can be connected to expel the accumulated drained water.


  • It has two drainage modes
  • Low noise
  • The unit has a humidity monitor and can automatically adjust itself.


  • Produces a little too much heat when used in a smaller space

4. Homelabs 1,500 Sq. Ft Energy Star Dehumidifier

This dehumidifier has the capacity to contain a gallon of water and can eliminate moisture of about 22 pints from the air on a daily basis. Also, it has a dimension of 15.2 x 10.0 x 19.7 inches. It removes moisture using its in-built pump compressor and does so quite efficiently. 

The Turbo mode can be activated which results in the increment of fan speed resulting in maximum moisture removal. After the ideal moisture condition has been set, you can leave the Homelabs for 24 hours to complete its cycle. By then, the tank would have been full and it shuts off itself. You can alternatively go for the manual draining. It is designed with a modern clean look, possesses a quiet fan, and is convenient and easy to use.


  • It is certified best for moderately to large sized spaces
  • It has wheels which aid easy movement


  • It does not come with a hose outlet for manual draining

5. ALROCKET Dehumidifier 35oz (1000ml) Small Dehumidifier for 2100 Cubic Feet

Alrocket dehumidifier is a portable and efficient device with a tank capacity of 1000ml (35oz). This unit can remove about 450ml (16oz) of moisture daily in an environment of 80% RH and a temperature of 86°F. The in-built Peltier operation helps the unit to deliver at a very low noise level of 39db, making you run it without loud noise.

This unit has an energy-saving design as will help you save costs significantly. The device works optimally when the temperature is between 41°F-122°F.

There is also an auto-shut-off feature that protects the unit from overflow.


  • It is ultra-quiet
  • Energy saving
  • It is perfect for rooms as large as 260 sq ft (2100 cubic feet)


  • It does not work well in cooler environments

Also read: 7 Tips How To Increase Humidity For Plants: Guidelines


A greenhouse should provide an ideal temperature and moisture level required for your plants to grow and thrive. To maintain the ideal humidity for a greenhouse while keeping the energy consumption low, a good quality dehumidifier for the greenhouse can be installed. In choosing the right dehumidifier, several factors need to be considered. These include the size of the humidifier, the cost, the moisture removal efficiency, the maintenance, and how easy it is to operate.

From our review of good quality dehumidifiers, you can consider buying for your greenhouse, our top recommendation is the Waykar 2000 Sq. Ft Dehumidifier is a good recommendation. It is ideal for spaces as large as 2000 sq. Ft and can remove as much as 34 pints daily. The unit can also be drained both manually and automatically. Vacplus Dehumidifier is another good quality alternative. However, any of the humidifiers on our list would make an ideal choice depending on your needs and budget.