Features of Aosun Roof Ventilation Fan
- Efficiently removes heat, smoke, humidity, and airborne contaminants
- Built with durable stainless steel and aluminium for outdoor longevity
- Operates smoothly and quietly with precision-balanced vanes
- Easy to install on both pitched and flat roofs with variable pitch collars
- Reliable for residential, industrial, and commercial kitchen ventilation
Professional Roof Ventilation Fan Manufacturer in China | Aosun
Roof ventilation fans are installed on rooftops to remove moisture, heat, smoke, and stale air directly from enclosed spaces. Unlike standard fans, roof ventilator fans discharge air vertically away from the building. So, contaminants such as grease, fumes, and hot air are efficiently expelled. That’s why they are used in environments like commercial kitchens, warehouses, and industrial facilities where indoor air quality, safety, and comfort must be maintained at all times.
At Aosun, we manufacture high-performance roof ventilation fans that are reliable in demanding applications. Our roof ventilation fans have precision-balanced impellers, corrosion-resistant aluminum or stainless steel housings, and heavy-duty bearings so they can last longer. They can also operate at variable speeds. These fans guarantee stable airflow even in systems with long ducts or high resistance. Many roof ventilation fans are also compatible with roof curbs and hinge kits. This allows easy access for cleaning and inspection.
We produce different types of roof ventilator fans, including centrifugal roof exhaust fans for high static pressure systems and wind-driven models that operate without electricity. We also offer industrial roof ventilator fans that can handle emissions, dust, and high temperatures. All fans have features such as double-riveted vanes, low-noise operation, and variable pitch collars for pitched roofs. They also have high-temperature coatings to guarantee adaptability to diverse settings.
Aosun roof ventilation fans are your energy-efficient, safe, and cost-effective ventilation solutions. They have airflow capacities ranging from small residential units to large-scale industrial fans. Whether for moisture control in attics, grease extraction in restaurants, or air circulation in factories, our roof ventilation fans can surely offer consistent performance and durability.
Contact us for more details!
Aluminum or stainless steel material. Low sound and high efficiency to discharge clean air.
It is made of ABS plastic material and dimension of 1040x1040x790. Efficient and durable to ensure optimal airflow.
Stainless steel turbines fits any roof pitch. made from high-quality weather-resistant material.
Provides water and dustproof design. Advantage to use in various industries.
Roof ventilator is sturdy and durable. Premium-grade stainless steel dual ball bearings vent function.
Ideal for residential and light commercial use. It offers the performance of standard roof venting.
Reduced air conditioning costs. Corrosion-resistant, suitable for coastal place.
Customized from 500mm to 700mm in size. It is designed to release trapped air in the roof space.
1. Why Constructions Need a Ventilation Fan on the Roof?
In modern life, large structures like factories often require effective ventilation systems for heat dissipation due to their poor cooling conditions. Especially during summer, when high ambient temperatures combine with heat generated by operating equipment, even brief stays inside can make you feel stiflingly hot. Moreover, such high temperatures not only create an unpleasant working environment but also reduce the workers’ productivity.
As a result, roof ventilators have become a widely adopted solution for heat dissipation in large buildings like factories.
If you’re searching for the right roof fan to support your project, Aosun ‘s roof ventilation fans are excellent choices. Our products feature precision engineering, easy cleaning, and are constructed from high-performance metal for strength and durability, ensuring stable airflow delivery.
2. How Does a Roof Ventilation Fan Work?
Roof ventilation fans are devices installed on rooftops to facilitate air exchange. By using the outdoor air to create convection, parallel airflow is transformed into vertical movement through the roof ventilation fan. Fresh air enters the interior, while stale or hot air is naturally expelled through the upward flow process. This maintains a fresh and dry indoor environment, achieving an air exchange rate as high as 98%.
In fact, the use of roof ventilators not only facilitates heat dissipation and ventilation but also expels harmful gases or moisture generated by factory equipment in enclosed environments. This serves as a vital safeguard for human health. Moreover, in the event of a fire, toxic smoke can be effectively vented through roof ventilators, making them critically important for safety.
3. What are the Types of Roof Ventilation Fans?
3.1. Centrifugal Roof Exhaust Fans with High Static Pressure Systems
These roof ventilation fans use high-speed rotating blades to generate centrifugal force, expelling the indoor air through inertia. Their high static pressure design enables efficient air replacement even in conditions with significant air resistance, making them widely used in factories, tunnels, and other locations with poor air circulation.
3.2. Roof Ventilation Fans Without Electric Power
The advantage of non-electrical roof ventilation fans is that they require no electricity to operate, making them an energy-saving choice and friendly to the environment. This is particularly suitable for locations requiring prolonged ventilation. And it’s also hard for you to imagine how much energy and cost will be wasted by keeping fans running continuously for extended periods.
However, one drawback of it is the limited ventilation capacity, as it relies entirely on natural wind. In windless conditions, its effectiveness is significantly reduced.
3.3. Industrial Roof Ventilation Fans
Industrial roof ventilation fans are specifically engineered for industrial applications. In chemical plants, for instance, equipment operation not only generates high temperatures but also produces harmful gases, dust, and other pollutants.
In such an environment, ensuring smooth indoor ventilation becomes critical. Therefore, we typically combine natural wind power with electric or mechanical drives to guarantee a more efficient ventilation process, thereby safeguarding the personnel’s safety in the industrial area. These products are ideally suited for chemical plants, production workshops, and similar facilities.
4. What Should be Noted when Choosing a Ventilation Fan for the Roof?
Just like selecting other electronic devices, when choosing the right roof ventilation fan, you also need to pay attention to certain essential parameters to assess its performance.
4.1. Airflow
The airflow of a ventilation fan refers to the volume of air the roof ventilation fan can handle, typically influenced by factors such as air pressure and power, and measured in cubic meters per hour (m³/h). The basic formula for calculating required airflow is:
Airflow (m³/h) = Exhaust Fan Efficiency × Space Volume (m³) / Air Change Rate.
Factories generally require 6-12 air changes per hour. For chemical plants with humid environments or poorer air quality, this rate may be higher. Of course, Airflow calculations must also account for specific operational conditions.
4.2. Power
The power requirements of different roof exhaust fans vary based on their airflow capacity. Generally, fans with lower airflow demand less power to operate.
For small workshops, selecting fans with an airflow range of 1000–5000 m³/h and a power rating of 0.5 kW–2 kW is sufficient for ventilation. Excessive power may lead to unnecessary energy and cost waste, so it’s essential to ensure the purchased product meets compliance standards. Larger workshops require higher airflow rates to meet ventilation and air exchange demands.
Before finalizing your purchase, we strongly recommend that you contact the manufacturer directly to confirm these specifications.
4.3. Operating Noise
Noise is also a critical factor in equipment selection, requiring consideration of its impact on indoor environments and its potential disturbance to the surrounding areas.
For example, different environments impose varying standards for operational noise levels. For production workshops located far from residential areas, noise levels between 70 and 85 decibels are considered acceptable. However, in areas adjacent to residential zones, noise must be strictly controlled below 50 decibels.
Aosun equipment operates at low noise levels, adapting to diverse usage environments and preventing noise pollution.
Beyond industrial facilities, residential homes, commercial kitchens, attics, and warehouses also require ventilation systems to achieve effective air exchange. By installing roof fans, we ensure healthy indoor air quality in these environments.
Aoshun roof fans are suitable for irregular surfaces like sloped roofs, meeting diverse environmental needs. Contact us today for an immediate quote.
For factories, installing roof ventilation fans is more suitable because the hot air has a lower density, so that it can rise to the top when dissipating. And using the roof location for heat dissipation will have better results. Additionally, non-electric exhaust fans provide more sustainable cooling for factories compared to electric ones, making them more energy efficient and environmentally friendly.
Without proper ventilation, moisture, heat, and even polluting gases and dust cannot be effectively expelled. This not only creates an unbearable indoor environment but also leads to mold growth due to the moisture buildup. Moreover, pollutant concentrations will steadily increase, posing serious health risks to occupants and resulting in significant losses.
Of course, Aosun can support you with materials like aluminum and stainless steel, which resist corrosion and offer extended service life even in outdoor environments. All ventilators feature double riveted blades, low noise operation, and variable pitch rings for sloped roofs. They also incorporate high-temperature-resistant coatings to ensure adaptability across diverse conditions.
They are suitable for large spaces that require rapid heat, moisture, smoke exhaust, or improved air circulation.Common applications as below:
1.Big Factory workshop (mechanical processing/electronics/textile factories);
2. Warehouse and Logistics Center;
3. Commercial building roofs (shopping malls/supermarkets/exhibition halls);
4. Livestock construction (chicken coop/pig coop/cattle coop)
5. Greenhouses and agricultural greenhouses
6. Equipment room/substation/boiler room
7. Large spaces such as sports halls, exhibition halls, and waiting halls
Yes,most roof ventilation fans have professional rainproof and waterproof structural design,can be used outdoors for a long time.It comes with rain cover canopy structure,designed with an arc-shaped or three-dimensional rain cover,can block rainwater from entering the interior.
Many roof exhaust fans waterproof rating can be IPX4 to IPX6, ensuring stable operation even in rainy and humid environments.
Not recommended, it’s better to find someone professional to install. The reasons are as follows:
*Roof ventilation fan involves steps such as opening holes, fixing, sealing and waterproofing, requiring professional tools and experience to avoid roof leakage or structural damage.
*It requires connecting power, switches, or temperature controllers,so it needs professional electricians to ensure correct wiring and safe operation.
*After installation,it needs waterproof glue, sealing strips, and metal base reinforcement must be done properly. Incorrect operations can easily lead to safety issues.
Yes. Many roof ventilation fans support automatic temperature control.It can achive intelligently start and stop through external controllers.
Here are 3 ways to achive this:
1. Built inside thermostat.Some thermostat come with temperature control function. When the temperature reaches the set value (such as 25 ° C, 30 ° C), the fan will automatically start and turn off when the temperature drops.
2.Connect external independent temperature control switch.It can be used with wall mounted or pipe mounted temperature controllers together.
3. Use intelligent temperature and humidity controller. It can automatically operate based on temperature,humidity,or time.
Yes.Most roof ventilation fans can operate continuously for a long time (24*7),especially industrial and commercial grade models.
This is because of following features:
1. Durable motor design
Using ball bearing motor, it has good heat radiation performance and can operate stably for a long time.
2. Low energy consumption operation
The power is usually in the range of 60-350W, and continuous operation will not cause excessive power consumption.
3.Temperature control protection
Some models are fulfilled with motor overheating protection or automatic temperature control start function to ensure safety even during long-term operation.
