Combining top-tier domestic structural design with fully integrated internal manufacturing capabilities, Longwell delivers the most versatile and robust agricultural ventilation solutions for you!
The high-capacity air delivery system can effectively alleviate the high-temperature and humid environment in large-scale poultry farming systems. Our exhaust fans can quickly dissipate heat and achieve stable air exchange, thereby improving the survival rate of poultry and the feed conversion rate (FCR).
The high concentration of hydrogen sulfide (H2S) and ammonia gas produced by the excrement of pigs are highly corrosive. You can use the glass fiber (FRP) housing with UV-resistant properties, stainless steel 304 fan blades, and sturdy galvanized components to provide you with an extremely durable ventilation system.
Heat stress directly suppresses feed intake and severely impacts milk yields in lactating herds. Longwell high-velocity circulation fans address this by driving focused, high-speed airflow over extended distances. Otherwise, our highly efficient motor designs drastically lower your farm’s electrical operating costs.
Stagnant air in a greenhouse creates uneven microclimates, allowing moisture to condense on leaves—the primary trigger for fungal disease and crop loss. Longwell exhaust fans are engineered to prevent this by forcing uniform, gentle air distribution across the entire plant canopy.
Longwell exhaust fans are built for heavy-duty, continuous air exchange to aggressively strip out extreme heat, excess humidity, and corrosive airborne pollutants. Designed for harsh agricultural environments, our high-capacity airflow systems maintain the stable, healthy climate necessary to protect your herd and optimize feed conversion rates.
Poultry exhaust fan is the core equipment in the environmental control systems of modern livestock farms. It plays a very important role in maintaining temperature, humidity and air quality, and is widely used in agricultural scenarios like chicken houses, pig farms, dairy farms and greenhouses.
Its working principle is the high-speed rotation of fan blades continuously expels the indoor air. At this time, the indoor air pressure is lower than the external air pressure, resulting in a slight negative pressure. The fresh air from outside, under the pressure difference, enters the room through the intake port.
The fresh air that enters the room will be expelled outside with heat, moisture, ammonia, carbon dioxide and dust. It can prevent local overheating or underheating, balance the composition of the indoor air, and enhance the stability of the overall environment.
It should be noted that ventilation and air circulation must be customized according to the size of the chicken coop, the external climate and the growth stage of the poultry. For example, the air flow speed in a summer broiler coop needs to be controlled at 2.5-3m/s to maintain the most suitable growth temperature for the chickens. If you need to customize based on specific requirements, please fill in the form on the right, or contact us by sales@longwellfans.com and WhatsApp +86-1835827466. We will provide you with a satisfactory personalized solution for free.
Longwell poultry exhaust fan with a 50-inch diameter delivers wind speeds of 40,000–50,000 CFM, fully meeting the ventilation and cooling requirements for large spaces.
Employs direct-drive motor, EC motor, or variable-speed controller, Longwell poultry exhaust fan delivering exceptionally low energy consumption and significant electricity savings.
Using FRP, stainless steel and galvanized steel materials, the poultry exhaust fan will not be corroded even 24/7 operation, and is highly suitable for the high-humidity and high-ammonia environment of chicken houses.
Featured with easily cleanable blades, direct drive structure, and belt tension system, the Longwell poultry exhaust fan is easy to maintain and requires low manpower.
● Blade Materials: stainless steel, aluminum alloy, FRP, nylon reinforced blades, etc.
● Frame Material: hot-dip galvanized steel, FRP, stainless steel, etc.
● Fan Size: 24 inch, 36 inch, 50 inch, 54 inch, or customized.
● Airflow Capacity: 7000 CFM to 56000CFM (34000m³/h to 95,000 m³/h)
● Common Static Pressure: 20 Pa to 50 Pa
● Fan Efficiency: 18 CFM/W to 35 CFM/W
● Noise Level: 60dB to 75 dB
● Voltage: 220V, 230V, 380V, 415V, 460V
● Frequency: 50Hz or 60Hz
● Blade Quantity: 3 – 6 blades
● Protection Class: IP54/IP55
● Fan Speed: 500–700 RPM(36 inch), 400–600 RPM(50 inch), 300–500 RPM(54 inch)
● Order Quantity: 30 pcs
● Premium materials provide corrosion protection and ensure exceptional durability.
● Reliable quality with low failure risk, even in long-term continuous operation.
● Significant energy-saving potential, with up to 50% reduction in energy consumption
● Integrated electronics for easy plug & play installation, reducing complexity
● Reducing operational costs by remote monitoring and automated management
● Ingenious backward-curved impeller design provides high static pressure.
● Available for multiple diameters, including 36-inch, 50-inch, and 54-inch, to meet your various ventilation requirements.
● The balanced impeller structure helps reduce vibration and ensures the equipment can operate stably for a long time.
Longwell utilizes high-quality FRP, as well as high-strength materials of stainless steel and aluminum alloy, as the raw materials for livestock ventilation fans. Consequently, our exhaust fans feature an aesthetically pleasing design, resistance to deformation, excellent resistance to aging, ultraviolet radiation, and impact, along with superior corrosion resistance.
Established in 1990, Longwell is a seasoned manufacturer with over 30+ years experience in fans design and production.We have a complete production line, covering everything from design drawings, to product manufacturing, to final product inspection, all of which are accomplished with rich experience and advanced equipment.
Each of our fans undergoes 6 rigorous quality inspection procedures: noise testing, vibration testing, concentricity performance test of the rotation center, dynamic balance test of the fan blades, speed test, and overall efficiency test. Therefore, every Longwell fan you purchase can be assured to be of high quality and efficiency. It meets the urgent demand of the world, especially the European market, for high energy efficiency and ultra-quiet fans.
Ask any commercial grower, and they’ll tell you: negative pressure paired with tunnel ventilation is the gold standard. You pull air out with heavy-duty exhaust fans, creating a vacuum that drags fresh air in through your cooling pads. It gives you absolute control over the climate.
When summer hits, tunnel ventilation is what keeps a massive broiler operation alive. You want to push air velocities right to that sweet spot of 2.5–3.0 m/s to create a massive wind-chill effect. In the winter, you flip the script. Minimum ventilation takes over to pull out moisture and ammonia without freezing the flock. Getting this right takes solid aerodynamic design. That’s exactly why we build our LONGWELL systems entirely in-house—to guarantee flawless airflow distribution, no matter the season.
The drop in OPEX is substantial. Traditional AC motors burn a lot of unnecessary power, especially when you try to throttle them down. Our EC (Electronically Commutated) fans usually cut energy use by 30% to 50% right out of the gate. Because they run efficiently at any speed, most facility managers see a full payback on the price difference in about 12 to 18 months.
It’s a moving target that changes as your flock grows. When you bring day-old chicks in, the house needs to be hot. We’re talking brooding temperatures right around 32–35°C (90–95°F) for that crucial first week.
After that, you slowly dial it back. By the time you have fully feathered, adult broilers, you want to hold the room between 18–24°C (64–75°F). Your ventilation equipment does the heavy lifting here. When the summer heat peaks, you rely on aggressive airflow and evaporative cooling pads to strip out the heat and keep the birds eating.
Never judge a fan by what it does in an empty testing room. In a real livestock building, static pressure is the ultimate performance killer.
Every piece of equipment in the air path adds resistance. Cooling pads, tight wall inlets, and even protective guards force the fan to work harder. Maintenance is another huge factor. Let dust cake onto the fan blades, motors, or louvers, and watch your airflow drop off a cliff. Leaky barn walls will also wreck your ventilation design. That’s why top-tier domestic production matters. We engineer LONGWELL exhaust fans to deliver maximum thrust specifically under heavy static pressure, ensuring your system performs exactly the way you designed it.
