Humidity Control for Greenhouses and Horticulture

Q: Can Condair systems handle both humidification and dehumidification?

Absolutely. Condair integrates both technologies to maintain perfect balance — adding moisture when air is dry and removing it when too humid — ensuring ideal plant growth in any climate.

Q: Can dry air reduce crop yield?

Yes. Dry air increases transpiration, causing leaf stress and slower development. Condair humidifiers restore moisture balance, supporting optimal growth and yield.

Q: How does Condair improve energy efficiency?

By regulating humidity directly rather than through heating or ventilation, Condair systems reduce energy use by up to 55% while keeping conditions stable and consistent.

Q: How does humidity affect plant diseases?

High humidity causes condensation that leads to Botrytis, mildew and leaf rot. Stable humidity from Condair systems prevents fungal growth and protects plant health.

Q: What humidity level is ideal for plant growth?

Most crops thrive at 60–80% RH. The ideal level depends on temperature, crop type, and growth phase — Condair systems automatically maintain the right balance.

Q: Why is humidity control vital in greenhouses?

Because both excessive and insufficient humidity harm plants. Balanced air moisture ensures steady growth, reduces diseases, and maintains energy-efficient greenhouse operation.

Speak With a Condair Expert

Benefits

Condair humidifiers and dehumidifiers create the perfect humidity balance in greenhouses and horticulture. Prevent plant diseases, reduce energy use, and achieve uniform, healthy growth all year round.

Balanced Plant Growth

Precise humidity control keeps plants from drying or rotting, ensuring stronger growth and yield.

Energy-Efficient Climate

Smart humidifty control can save up to 55% on energy while maintaining stable growing conditions.

Prevent Diseases

Controlled humidity prevents condensation and fungal growth, keeping crops healthy.

Greenhouses and horticulture humidity control

Top of page Benefits Use Cases References Downloads FAQs

Complete Humidity Balance for Every Crop

Healthy plant growth depends on humidity that is neither too high nor too low. Condair systems automatically balance both — adding moisture when air is dry and removing it when condensation risks appear. This equilibrium supports photosynthesis, nutrient uptake, and transpiration. Whether growing flowers, vegetables or ornamentals, a stable humidity ensures faster rooting, uniform growth, and stronger plants with fewer losses. The result is a predictable, high-quality harvest throughout all seasons.

Create Uniform Growing Conditions

Humidity differences between greenhouse zones often cause uneven plant development. Condair systems distribute humidity evenly through precise sensors and airflow management. The result: identical growth rates, consistent flowering, and even coloration across the entire crop area. Balanced air moisture also stabilizes temperature, improving efficiency for heating and cooling systems. Growers benefit from reliable yield forecasting and reduced crop losses — ideal for both small horticultural setups and large-scale operations.

Improve Crop Yield and Quality

Too much humidity leads to condensation, creating the perfect environment for fungal diseases such as Botrytis, rust and powdery mildew. Condair dehumidifiers maintain humidity below the dew point, keeping leaves dry and surfaces clean. By combining gentle air circulation with energy-efficient moisture removal, Condair prevents mold and leaf damage while reducing pesticide use. A stable, dry climate means healthier crops, longer shelf life, and improved profitability.

Protect Plants from Drying and Stress

When greenhouse air becomes too dry, plants lose moisture rapidly through transpiration. This causes wilting, leaf burn and slower growth. Condair humidity control restores the right level of air moisture, ensuring plants remain hydrated and photosynthesis stays efficient. Balanced humidity keeps stomata open for CO₂ intake, improves nutrient absorption and enhances overall vitality. As a result, crops grow faster, recover better after pruning, and achieve higher yield quality with less energy and water loss.

Save Energy with Intelligent Climate Control

Traditional methods such as window ventilation or dry heating waste large amounts of energy. Condair systems maintain ideal humidity without excessive heating or cooling, saving up to 55% in energy use. Advanced control technology ensures dehumidifiers and humidifiers work together efficiently — adding or removing moisture only when necessary. Integrated heat recovery and low-maintenance design make Condair the most sustainable solution for modern greenhouse climate control.

Sustainable and Water-Efficient Technology

Condair systems not only optimize humidity — they also promote resource efficiency. By minimizing the need for heating, dehumidification lowers greenhouse gas emissions and operational costs. Meanwhile, adiabatic humidifiers provide natural evaporative cooling, lowering ambient temperatures and energy costs. This closed-loop approach supports eco-friendly horticulture — combining crop productivity with resource efficiency. With robust design and minimal maintenance needs, Condair systems deliver long-term performance for a greener future in controlled environment agriculture.

Use Cases

Condair humidity control in greenhouses prevent mold, save energy, ensure uniform growth and protect horticulture crops from diseases.

Prevent Evaporative Losses

Organic materials have an internal moisture content and will lose moisture to the atmosphere when exposed to air with low humidity. Humidifiers are used to create an environment with the proper balance between the material’s internal moisture content and the air’s relative humidity.

Discover Condair in Action

Projects and References

United States Department of Agriculture

Duke University Greenhouse

Duke University's biological sciences greenhouse is a bio-level safety 1-P glasshouse facility. It supports the plant genetic research of Duke faculty and offers plant care service and greenhouse space for rent to private companies.

Peninsula Gardens

Peninsula Gardens is a premium cannabis cultivator. They specialize in producing top level cannabis flowers through state of the art facilities, cutting edge technology, passionate growers, and superior genetics.

Tweed

Tweed is a medical marijuana grow room. Medical cannabis markets are rapidly expanding in Canada and around the world. Recreational cannabis is on the horizon. Now is your chance to join the largest, most recognized cannabis producer in the country as we set off to build something amazing, relying on established but ever-evolving brands.

Muttart Conservatory

The Muttart Conservatory, Edmonton's premier horticultural attraction, is nestled in the river valley and features more than 700 species of plants in 3 climate-regulated biomes - arid, temperate and tropical - and a feature biome, located within our pyramids.

University of Laval Greenhouse

Maintaining consistent humidity levels in greenhouses provides a comfortable environment in which plants can thrive. Enhancing ventilation, maintaining humidification, and ensuring proper cooling can aid in seedling development and healthy plant growth.

Chlesea Physic Garden, UK

Chelsea Physic Garden has installed a Condair ML high-pressure spray humidifier to maintain the perfect atmosphere for horticultural success in its restored Victorian glasshouses. The garden’s historic glasshouses are key to cultivating sensitive tropical and subtropical species, such as cocoa and vanilla as well as a wide range of other tender ferns, epiphytes, woody trees and climbers. These plants rely on consistently high humidity to replicate their natural rainforest environments.

The Green Planet Biodome

The Green Planet is a biodome in Dubai offering visitors the chance to explore a striking variety of tropical plants, insects, reptiles, birds and mammals. This contained tropical rainforest is maintained at a constant 75-81°F with high humidity, ensuring an ideal climate for the flora and fauna. The building has been designed with sustainability in mind, having received the Leed (Leadership in Energy and Environmental Design) certification and is fully compliant with the Dubai Municipality green building regulations and specifications. The Condair's ML Flex high-pressure humidifiers installed are capable of introducing up to 160 gal of moisture per hour to maintain the desired internal humidity while also providing up to 490kW per hour of low energy evaporative cooling.

CH4 Global

CH4 Global uses aquaponic growing methods in their facility in the far south of SA (Arno Bay) to grow Asparagopsis seaweed. This seaweed is then used as part of a unique animal feed supplement to significantly reduce the amount of methane gas that enters the atmosphere from livestock. The combination of artificial lighting and the aquaponic reservoirs create a lot of water vapor to be released into the air. This means the facility reaches very high humidity levels which need to be controlled. The artificial lighting puts off a heat load that is already handled by current HVAC. To ensure we didn't add to this heat load we needed to ensure a dehumidifier was to not add unnecessary heat gains. Condair used its DC-N dehumidifier range for this application. These units fit the need of the customer as they have a remote condenser. This allows the supply air temperature to remain neutral. 2 units were supplied for production areas - DC270-N and DC350-N. These units will remove on average 160 gal per day for the customer.

ECS Botanics

ECS Botanics is a medicinal cannabis cultivator based in Victoria, Australia. Carefully controlled environments are critical to ensure the highest possible quality and yield for the organization. They required both humidification and dehumidification equipment to grow, dry and store their products in optimal conditions. For complete humidity control, a system including resistive steam humidifiers and condensing dehumidifiers was selected. This enables close control throughout the year and across variable conditions.

Wide Bay Seedlings

Based on Queensland's Fraser Coast, Wide Bay Seedlngs is an innovative production nursery which supplies a range of seedlings, grown to order, to farms all over Australia. Ultrasonic humidifiers from Condair are helping maintain the ideal humidity and climate-controlled conditions within the grafting chambers to ensure optimum growing conditions.

Konya Tropical Butterfly Garden

The 17,222 square foot area of the Konya Tropical Butterfly Garden accommodates 15 different species of butterflies. Up to 20,000 butterflies can be overserved flying around 98 different species of plants in this unique and carefully controlled environment. ML Princess high pressure humidifiers are providing high capacity, low energy evaporative cooling and humidity control to maintain an optimum atmosphere for the insects and their human guests.

Tozer Seeds

Tozer are an independent, vegetable plant breeding company based in the UK. It markets seeds around the world and has established businesses in the USA, Holland and Spain. Condair DA desiccant dehumidifiers are helping maintain the ideal humidity for the successful storage of seeds.