EC Axial Fans in Greenhouse and Horticultural Climate Control – Precision Growing for Higher Yields

Modern commercial greenhouses and vertical farms rely on precise climate control to maximize crop yield, quality, and resource efficiency. Temperature, humidity, CO₂ concentration, and air circulation must be maintained within narrow ranges – and axial fans are the workhorses that deliver this control. YUTEC’s EC axial fans offer the energy efficiency, speed flexibility, and durability that progressive growers demand.

The Climate Control Challenge in Greenhouses

A greenhouse during a sunny summer day can accumulate excess heat within minutes. Horizontal airflow fans (HAF) circulate air to eliminate temperature stratification and prevent condensation on leaves – which can lead to fungal diseases like botrytis and powdery mildew. Exhaust fans remove hot, humid air and draw in fresh CO₂‑rich air through vents or louvers.

Traditional AC fans run at constant speed, regardless of actual conditions. This wastes energy and can create excessive air movement that damages delicate seedlings. They also lack the ability to respond to sensor feedback, forcing growers to rely on manual adjustments or timers.

EC Axial Fans – Smart Climate Management

YUTEC's EC axial fans (250–400 mm for exhaust and HAF; 200–250 mm for smaller zones) provide:

· Sensor‑based speed control – Fans modulate speed based on temperature, humidity, VPD (vapour pressure deficit), or CO₂ sensors, maintaining ideal growing conditions while minimizing energy consumption. Savings of 40–60% are typical compared to constant‑speed AC fans.

· Soft‑start – Prevents sudden air surges that can stress young plants.

· Quiet operation – Essential for greenhouses located near residential areas or where workers spend long hours.

· Alarm outputs – Alert the grower if a fan fails, allowing immediate correction before crop damage occurs.

Durability in Greenhouse Environments

Greenhouses are humid, warm, and often treated with pesticides and fertilizers. YUTEC offers:

· IP55/IP68 sealed motors to withstand high humidity and wash‑down.

· Corrosion‑resistant impellers and housings – especially important in coastal areas or where sulphur burners are used.

· UV‑resistant materials for long‑term exposure to sunlight.

· Easy‑clean guards to remove dust, pollen, and insects.

Size Selection for Greenhouses

· 200–250 mm – Small seedling chambers, propagation rooms, and vertical farm racks.

· 300–350 mm – Standard HAF and exhaust fans for medium‑sized greenhouses (500–2,000 m²).

· 400 mm – Large commercial greenhouses and multi‑span facilities requiring high air exchange rates.

Case Example – Tomato Greenhouse

A Dutch tomato grower replaced 30 AC exhaust fans (350 mm) with YUTEC EC fans, adding humidity‑based speed control. The fans now run at an average of 55% speed, reducing ventilation energy by 52%. The grower also reported a 4% increase in marketable yield due to more stable VPD and reduced leaf wetness.

Conclusion

In controlled‑environment agriculture, every degree and every watt matters. YUTEC’s EC axial fans deliver precise, efficient, and reliable climate control for greenhouses and vertical farms. Visit www.yutecfan.com to explore our horticultural solutions and request a free energy audit.