Unpowered roof fan
Efficient, Eco-Friendly, and Durable Ventilation Solution
Roof Fans provide energy-free, efficient ventilation for industrial and commercial spaces, using natural wind and temperature differences to drive continuous air circulation year-round. This eco-friendly design lowers energy costs and operational expenses. Made with premium stainless or galvanized steel, Yichen Roof Fans perform reliably in high-temperature, humid, and corrosive environments, making them ideal for factories, warehouses, and farms needing effective ventilation.
Fan Advantages
High-Efficiency Ventilation
Uses natural wind power to drive air circulation and exhaust, without any electricity
Durability
Built with corrosion-resistant, high-quality materials, ensuring long-lasting performance in extreme conditions
Silent Operation
Quiet, disturbance-free operation, suitable for noise-sensitive areas
Versatile Applications
Suitable for a variety of industrial and commercial environments, from high-temperature factories to humid farming sites
Yichen is committed to providing customers with reliable, long-term ventilation solutions.
Technical Parameters
| Parameters | Model | Number of fan blades | Throat diameter (mm) | Throat height (mm) | Total height (mm) | Floor size | Net weight | Gross weight | Weight with base | Package Size (mm) |
| 201 stainless steel 304 stainless steel | 100# | 12 | 100 | 80 | 180 | none | 0.524kg | 0.703kg | 0.703kg | 180*180*190 |
| 160# | 16 | 160 | 80 | 230 | none | 0.734kg | 0.985kg | 0.985kg | 230*230*220 | |
| 200# | 20 | 200 | 80 | 230 | none | 0.873kg | 1.203kg | 1.2065kg | 280*280*220 | |
| 300# | 20 | 300 | 105 | 320 | 430*430 | 1.678kg | 2.132kg | 2.445kg | 410*410*330 | |
| 360# | 24 | 360 | 120 | 370 | 0.3*500*500 | 2.221kg | 2.897kg | 3.36kg | 510*510*385 | |
| 400# | 24 | 400 | 120 | 380 | 500*500 | 2.331kg | 2.692kg | 3.053kg | 510*510*385 | |
| 500# | 32 | 500 | 180 | 500 | 600*600 | 3.434kg | 4.481kg | 4.991kg | 610*610*500 | |
| 600# | 32 | 600 | 210 | 580 | 730*800 | 4.798kg | 6.4kg | 7.355kg | 710*710*580 | |
| 680# | 36 | 680 | 215 | 600 | 800*800 | 6.3kg | 8.8kg | 9.998kg | 800*800*620 | |
| 800# | 42 | 800 | 240 | 650 | 1000*1015 | 7.886kg | 11.2kg | 13.002kg | 905*905*660 | |
| 900# | 48 | 900 | 235 | 690 | 1030*1100 | 9.642kg | 13.535kg | 15.293kg | 1020*1020*690 | |
| 1000# | 54 | 1000 | 270 | 700 | 1230*1200 | 11.133kg | 15.511kg | 17.848kg | 1100*1100*720 | |
| 1200# | 66 | 1200 | 260 | 700 | 1400*1400 | 13.527kg | 19.895kg | 23.695kg | 1300*1300*720 |
The unpowered fan is noiseless, consumes no electricity, is easy to install, and is suitable for a variety of industrial, agricultural and commercial buildings.
About Us
We main products include livestock and poultry and greenhouse one-stop equipment, such as: push-pull fan, heavy hammer fan, butterfly door fan, shutter fan, glass fiber reinforced plastic fan, cowshed fan, high-intensity wet curtain, air cooler and other ventilation, cooling and humidification equipment; More than 200 varieties of breeding supporting equipment, such as fully automatic and efficient coal-fired hot air blower, large water heating boiler and other heating equipment, scraper traction type manure cleaner, conveyor belt type manure cleaner, automatic breeding water line, material line and breeding cage, etc.
Why Choose Us
Industry-leading Temperature Control Experts
Yichen specializes in the production and development of livestock, agricultural, and industrial ventilation and cooling equipment.
What Our Clients Say
Apllications
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Professional Services
The unpowered fan utilizes natural wind and the temperature difference between indoor and outdoor air to create ventilation. It doesn’t require electricity, automatically expelling hot air and fumes to keep indoor air fresh.
Our fans are ideal for industrial warehouses, farms, workshops, and any space needing constant ventilation without added electrical costs.
No. Our fans are lightweight and easy to install, without adding strain to the roof structure or compromising waterproofing or stability.
There are minimal maintenance costs. Since the fan doesn’t require electricity and has no complex mechanical parts, it only needs occasional cleaning and inspection to ensure it works efficiently.
Yes, we offer various models and sizes and can customize them to meet the specific needs of your building.
