Why Need a Proper Dehumidifier in Winter for Greenhouse

As fresh growers, it might be challenging to grow healthy plants in a winter greenhouse because they face many problems, especially humidity control, which is a challenge. Here's where using a dehumidifier in the winter can make a world of difference.

There are still ways to solve humidity problems, such as using a dehumidifier in winter. The dehumidifier can regulate and adjust greenhouse humidity levels by the right parameter setting.

This article will explain the importance of dehumidifiers in a winter garden and how to choose and maintain them for your needs.

Why need a dehumidifier in Winter Greenhouse Gardening

In winter, the temperature difference between the greenhouse's inside and outside surfaces will cause condensation. This excess moisture can quickly increase plant diseases, mold, and mildew growth.

Many growers will use fans to help with this. However, maintaining the ideal setting for plant growth in a greenhouse in winter with fans takes a lot of work. Excessive moisture can still harm plants and make them uncomfortable. Growers need a more effective tool to remove the excess water.

A dehumidifier can be an invaluable tool during winter months, helping regulate humidity levels. The right dehumidifier can effectively remove moisture and support healthy plant growth, as plants continue to transpire or release water vapor even in colder temperatures.

Combating Moisture Issues

Excessive moisture in a greenhouse can cause various plant issues during winter. A plant must receive enough water to thrive, but too much moisture in the air can cause mold growth, root rot, and weakened growth. A dehumidifier, on the other hand, can create a dry growth environment with the right temperature.

Preventing Condensation

Greenhouses can become humid during the winter months due to the lack of ventilation and colder temperatures. This moisture can cause condensation on the windows, walls, and ceiling blocking sunlight and hindering plant growth.

Therefore, dehumidifiers regulate the humidity levels and prevent condensation from forming to combat this issue.

Deter Pests

Moisture attracts pests because pests need a steady supply of water to survive, but it can be avoided and controlled by reducing moisture and humidity in the greenhouse. Using a dehumidifier with a proper ventilation system can maintain optimal humidity levels, preventing damp conditions that attract pests.

Promoting Transpiration

When humidity levels rise, plants struggle to release moisture via transpiration, leading to stress and potential harm. A dehumidifier effectively removes surplus moisture from the air, helping plants flourish and maintain proper hydration.

Ensuring Safety

Using a dehumidifier helps prevent the buildup of excess moisture, which is crucial for not only plant health but also the safety of employees who could slip on damp surfaces. Maintaining a dry and secure environment in the greenhouse fosters a healthier space for both people and plants.

dehumidifier in the winter

Choosing the Right Dehumidifier in Winter

When selecting a dehumidifier, consider the following factors:

  • Determine the size of your greenhouse and the amount of moisture that needs removal. This will guide you in choosing a dehumidifier with the appropriate capacity.
  • Evaluate the type of dehumidifier that suits your needs. Options include refrigerant, desiccant, and hybrid models. There's a wide variety of dehumidifiers available, each with unique advantages and disadvantages. Take the time to research and choose the best option for your specific needs.
  • Consider energy efficiency, as it affects your overall energy expenses.
  • Ensure the dehumidifier is capable of managing the elevated humidity levels typical in these settings.
  • Opt for a dehumidifier with an integrated hygrometer to monitor humidity levels and adjust settings as needed.

Get the Best Dehumidifier from Altaqua

Altaqua specializes in providing customized dehumidification solutions for commercial growers. Our experience and knowledge enable us to help you find the ideal dehumidifier tailored to your specific needs.

Each dehumidifier type serves a unique purpose, and selecting the right one for your winter greenhouse is essential. The ideal dehumidifier for your particular situation might differ from the standard option. So, taking the time to understand your requirements is essential in making the right choice. That's why at Altaqua, we offer customized dehumidifier options tailored to your greenhouse's requirements.

Our team works closely with you to assess your needs and design a system that will effectively regulate humidity levels and promote healthy plant growth.

Just get more detailed information from our grow room dehumidifier.

Maintaining Your Dehumidifier in Winter for Optimal Performance

However, proper maintenance is just as crucial for a successful winter garden. Follow these tips to optimize your dehumidifier's performance:

  • Regularly clean the filter and coils
  • Inspect the drainage system for blockages consistently
  • Keep an eye on humidity levels to ensure they remain within the desired range
  • Promptly replace any worn or damaged parts to prevent further harm to the dehumidifier

You can ensure your winter greenhouse gardening is successful and thriving by correctly maintaining your dehumidifier.


Winter greenhouse gardening can be challenging due to cold and damp conditions, but using a dehumidifier effectively addresses these issues, creating a hospitable environment for plant growth.

You can ensure a thriving and successful winter greenhouse if you choose the right dehumidifier and control humidity levels.


1. Is it okay to use dehumidifier in winter?

Yes, it's okay to use a dehumidifier in winter, especially if your indoor humidity levels are high. High humidity can lead to condensation on windows and other surfaces, which can cause mold and mildew growth.

2. Should you use a humidifier or dehumidifier in winter?

Whether to use a humidifier or dehumidifier in winter depends on your indoor humidity levels. If your indoor air is too dry, a humidifier can help. If it's too humid, a dehumidifier would be more beneficial.

3. What should I set my dehumidifier to in the winter?

In winter, set your dehumidifier between 30-50%. This range helps prevent condensation and mold growth. Monitor the humidity level regularly to adjust the setting as needed.

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