News » 09.10.2025 - “The integration of lighting and airflow allows for a more consistent microclimate”
Supplemental lighting is essential in greenhouse production, but transitioning to LED technology can introduce climate challenges. Unlike traditional lighting, LEDs emit significantly less waste heat, which can lead to increased humidity levels—conditions favorable for fungal diseases.
"LED lighting has clear benefits for energy efficiency, but it also changes how we manage greenhouse climates," says Keith Thomas, Commercial Leader at Food Autonomy. "Lower heat output can lead to higher humidity, which makes airflow management more important than ever."
High-performance greenhouse production is a complex system where every detail matters. While supplemental lighting is a key driver, airflow is often one of the most underestimated factors influencing plant health and productivity. "We've observed that even small improvements in air circulation can have a substantial impact on plant growth and disease prevention," Thomas explains. "Smart lighting combined with optimized climate control is a real game-changer."
To address the challenges of transitioning to full LED, Food Autonomy developed LEDFan®, a two-in-one solution. Instead of relying solely on dehumidification systems or additional fans, LEDFan® combines lighting with targeted air circulation. It directs heat downward, raises canopy air temperature, and promotes beneficial airflow throughout the growing zone.
"The integration of lighting and airflow allows for a more consistent microclimate," Thomas notes. "This helps plants stay healthy while reducing the pressure from fungal pathogens."
The result is a more balanced climate, healthier plants, and lower disease risk. Studies have shown that air movement at just 0.4 m/s can increase photosynthesis efficiency by up to 30% compared to stagnant air (Kitaya et al., 2003).
Ventilation isn't just about temperature control—it is essential for CO₂ uptake, transpiration, and overall plant vitality. Without proper airflow, greenhouses can become humid and stagnant, creating ideal conditions for fungal diseases such as Botrytis cinerea. Research confirms that high humidity significantly increases the risk of fungal and bacterial infections, while airflow improves the microclimate (Hartman et al., 2003).
LEDFan® provides a unique solution by integrating lighting with targeted air circulation. It creates controlled airflow while raising canopy air temperature, naturally regulating humidity and reducing cold-heat stress by warming incoming air. This integrated approach supports enhanced CO₂ uptake, photosynthesis, and transpiration, while lowering pathogen pressure through precise climate management.
"In modern greenhouse operations, airflow and smart lighting are not optional—they are essential for efficient, sustainable crop production," Thomas emphasizes. "By combining lighting with airflow, growers can reduce reliance on additional dehumidification and heating while maintaining optimal plant health. LEDFan® can also synchronize fan control with environmental parameters like screen openings and CO₂ fertilization, either through the CultiMesh® wireless system or full integration into a climate computer."
Source: www.floraldaily.com
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