PRODUCTS
Circular Fan
Category：
- Product Description
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- Commodity name: Circular Fan
General Introduction
Circulation Fan
In modern greenhouse production, air circulation is just as important as temperature and humidity control. Due to the sealed nature of greenhouse environments, air tends to stratify – warm, moist air rises to the ridge while cooler, drier air remains near the crop canopy.
This imbalance can lead to condensation on leaves, increased disease pressure such as Botrytis, and uneven crop growth.
Circulation fans, also known as air circulators or HAF fans, are designed to address this challenge by creating continuous air movement throughout the greenhouse.
By destratifying air layers and eliminating stagnant zones, circulation fans ensure a more uniform distribution of temperature, humidity, and CO₂ concentration, creating optimal growing conditions from floor to ceiling.
SHG’s circulation fans are engineered for energy efficiency, quiet operation, and long-term reliability in demanding greenhouse environments. Whether you are growing vegetables, flowers, or nursery stock, our fans help you achieve healthier crops with lower energy costs.
Main Features
Creating a Uniform and Active Climate for Healthy Crop Growth
01Uniform Climate Distribution
Temperature, humidity, and CO₂ levels can vary significantly across a greenhouse – often by as much as 2–3°C between the ridge and the crop canopy. Circulation fans actively mix the air, breaking up thermal stratification and eliminating cold spots or overheated zones. The result is a more consistent growing environment that promotes uniform crop development and quality.
02Energy-Efficient Operation
Modern circulation fans consume remarkably little energy while delivering substantial climate benefits. Advanced models feature precision-matched motors and blades that maximize airflow per watt of electricity consumed. Compared to older fan models, today’s high-efficiency circulators can be up to 25% more economical, reducing your operational costs without compromising performance.
03Disease Prevention Through Active Air Movement
One of the most critical functions of circulation fans is moisture management. When humid air stagnates around plant foliage, condensation forms – creating ideal conditions for fungal diseases such as Botrytis, powdery mildew, and downy mildew. By keeping air continuously moving, circulation fans promote transpiration, keep leaf surfaces dry, and significantly reduce disease pressure. This allows growers to rely less on chemical fungicides and more on environmental control.
04Quiet and Discreet Operation
Greenhouse workers spend long hours in the growing environment, and excessive noise can be fatiguing. Advanced circulation fans are designed with optimized blade geometry, balanced motors, and acoustic engineering to minimize noise output. With sound levels reduced by up to 50% compared to older models, SHG fans create a more comfortable working environment while maintaining powerful airflow.
05Flexible Mounting and Positioning
Every greenhouse has unique dimensions and crop arrangements. SHG circulation fans come with versatile mounting options – including ceiling suspension, wall mounting, and truss attachment – allowing you to position fans exactly where airflow is needed most. Multiple fan sizes (from 8-inch to 24-inch diameter) are available to match your greenhouse volume and air movement requirements.
Quality & Service We Provide
1.Custom system design based on your greenhouse size, climate conditions, and crop requirements
2.Component selection and sizing calculations
3.Production with strict quality control
4.Professional installation guidance
5.After-sales technical support and spare parts supply
We can provide detailed installation drawings and airflow calculations to ensure optimal system performance.
Packaging&Delivery
Installation Instruction
Why Choose Us?
Rich Industry Experience
40+ Years of Greenhouse Manufacturing Experience; 20+ Years of Greenhouse Exporting Experience; 10+ Years of OEM/ODM Experience.
Certified Quality Assurance
ISO9001 certified and Construction Qualification certified, ensuring reliable product quality and standardized project execution.
One-Stop Full-Process Service
From site surveys and design planning to production, transportation, installation and commissioning, dedicated staff oversee every stage. Post-installation technical guidance ensures customers can start production smoothly.
Diverse Greenhouse Solutions
From single tunnel greenhouses to multi-span high tunnels, polycarbonate greenhouses and Venlo glass greenhouses, we provide customized solutions for different budgets, climates and planting requirements.
Crop-Oriented Intelligent Design
With early involvement from crop experts, we optimize not only greenhouse structures, but also ventilation, cooling, irrigation and growing systems tailored specifically to your crops and local environment.
Add：No. 50, Lane 100, Jiaqian Road, Nanxiang Town, Jiading District, Shanghai, China
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