Humidity Control for Vertical Farming & CEA Facilities

Q: Are Condair systems energy-efficient?

Yes. Both condensing systems and desiccant systems can be used energy efficient depending on the energy source and desired climate.

Q: Can humidity control prevent diseases?

Yes. It prevents mould, root damage and leaf drop caused by excessive or insufficient humidity.

Q: Is water from dehumidifiers reusable?

Yes. Water collected by condensing dehumidifiers can be reused for irrigation, reducing water consumption.

Q: What are ideal humidity levels for crops?

Germination: 70–80% RH, growth: 50–80% RH, flowering: 40–60% RH. Temperature: 21–26 °C.

Q: Which dehumidifiers work best for vertical farms?

Condensing dehumidifiers, like the Condair DC-N, work efficiently in warm, mid-humidity conditions (>20 °C, >40% RH) While desiccant dehumidifiers work best in lower temperatures (<20 °C)

Q: Why is humidity control vital in vertical farms?

Humidity affects growth, yield and disease risk. Accurate control ensures healthy crops and consistent production.

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Benefits

Condair humidifiers and dehumidifiers enable precise humidity control in vertical farms, improving crop growth, preventing diseases and maximising yield while reducing energy use.

Maximise crop yield

Stable humidity creates ideal conditions in every growth phase, boosting yield and plant health.

Prevent plant diseases

Controlling humidity stops mould, root damage and leaf loss caused by high or low humidity.

Save energy & resources

Condair systems reduce energy use, recover water, and support sustainable crop production.

Vertical farming & CEA facilities

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Energy-efficient climate solutions

"Condair’s condensing dehumidifiers provide an energy-efficient solution for precise humidity control, featuring integrated heat recovery and dual-condenser designs that reuse thermal energy generated during the drying process reducing both heating and cooling loads. Desiccant systems typically require more electrical power for regeneration, but they can also be highly efficient when utilizing alternative energy sources such as waste heat, gas, or renewable thermal energy. This flexibility can significantly reduce overall energy demand depending on the available energy mix.

For large facilities, adiabatic humidification additionally provides natural evaporative cooling, lowering ambient temperatures without extra mechanical refrigeration. Together, these technologies help reduce total energy consumption, improve environmental stability, and support a sustainable business model — essential for scaling vertical farm operations efficiently."

Flexible systems for any facility

Every vertical farm has unique climate requirements. From small research setups to multi-level commercial production facilities. Condair provides a complete range of humidifiers and dehumidifiers tailored to the scale and complexity of each operation. Compact electric or ultrasonic humidifiers are ideal for smaller farms, while condensing and adiabatic systems efficiently manage humidity across large growing zones. All systems have their benefits. Simple integration with building management systems (BMS) and minimal maintenance is possible with the correct selection. With Condair’s global expertise and service network, vertical farms can operate with confidence, efficiency and long-term reliability.

Maximise yield and crop quality

Vertical farming thrives on precision. Even small fluctuations in humidity can impact nutrient uptake, transpiration and plant metabolism. Condair systems ensure each crop layer experiences the same humidity level, creating a consistent environment throughout the entire facility. This uniformity leads to higher yields, better flavour and visual uniformity across the harvest. Controlled humidity also reduces water loss through transpiration, ensuring efficient nutrient delivery and higher biomass output. With Condair’s climate technology, growers can replicate ideal outdoor conditions all year round — achieving predictable, repeatable and high-quality results.

Precise humidity at every growth stage

Humidity control is one of the most critical factors for consistent yield in vertical farming. Condair humidifiers and dehumidifiers deliver precise regulation across all plant growth stages — from germination to flowering. During early propagation, humidity between 70–80% RH ensures healthy root development, while keeping it around 60% RH during flowering prevents mould and fungal growth. By maintaining this balance, Condair systems create the perfect microclimate for each crop type. Accurate humidity keeps leaf structure intact, prevents wilting and water stress, and allows growers to replicate optimal outdoor conditions indoors, resulting in faster, healthier and more predictable plant growth.

Prevent mould and root damage

In closed vertical farm environments, excess humidity can quickly lead to mould formation, root damage and leaf drop — particularly in hydroponic and aquaponic systems. Condair dehumidifiers continuously remove excess moisture from the air, maintaining a balanced climate that prevents condensation and microbial growth. With relative humidity kept within precise limits, the risk of Botrytis, powdery mildew and bacterial rot is drastically reduced. This leads to healthier crops, lower losses and a more stable yield. In addition, balanced humidity reduces the need for chemical treatments and supports clean, pesticide-free production.

Recover water and heat energy

Condair condensing dehumidifiers don’t just dry the air — they turn recovered moisture into a valuable resource. The condensed water can be filtered and reused in hydroponic or irrigation systems, reducing overall water consumption and waste. At the same time, the heat energy generated during the drying process can be redirected into the growing environment, helping maintain temperature balance and lowering heating demand. This combination of water and heat recovery makes Condair systems highly sustainable, aligning with the circular resource principles that define modern controlled environment agriculture.

Use cases

Condair systems regulate humidity from germination to harvest, preventing mould, improving crop quality, recovering water and ensuring energy-efficient vertical farming.

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