Motorized Roof Ventilator Fan

A motorized roof ventilator, also known as a powered attic ventilator or Roof Extractor Fan, is a Machine installed on the roof of a building to help regulate the temperature and humidity levels in the attic or the space below the roof.

The primary purpose of a motorized roof ventilator is to exhaust hot air and moisture from the attic, preventing them from accumulating and causing problems such as heat buildup, condensation, and potential damage to the roof structure. By removing hot air, the Roof ventilator helps to reduce the strain on air conditioning systems, especially during hot summer months.

Why Make Use Of An Motorized Roof Extractor Fan?

It is not uncommon to see people succumbing to diseases caused by bad smell. It easily causes lack of mental focus and concentration. In a building where there are many workers, chemicals and different manufacturing processes are occurring, there is bound to be a bad smell from time to time. This can make the work condition very uncomfortable which in turn affects worker productivity. Such hassles can be removed with the assistance of a Vayuvents Private Limited electrically operated roof extractor fan.

Here is a look at its key features :
Key features of a roof Ventilation fan include :

• It can be placed on the roof of industries and factories for clean air cleaning needs
• Capable of extracting dust and particulate matter in minutes
• Body of the machine is made from fine quality material that is durable, long-lasting
• Has got energy efficiency so that it produces low electricity bills
• Available in varying speeds, capacities and dimensions

Ventilation apacity : The ventilation capacity of a roof extractor fan is an important feature, as it determines how much air the fan can move in a given period of time.
Noise level : The noise level of a roof extractor fan is a consideration, as some fans can be quite loud and disruptive to the indoor environment.
Energy efficiency : The energy efficiency of a roof extractor fan can impact its running costs, so it's important to consider the power consumption and efficiency of the fan when making a purchase.
Durability : Roof extractor fans are exposed to the elements and must be able to withstand rain, wind, and other environmental factors.
Ease of installation : The ease of installation is an important consideration, as some roof extractor fans can be difficult to install, especially for those without experience.
Control options : The control options for a roof extractor fan can include manual controls, automatic controls, and programmable controls.
Size and design : The size and design of a roof extractor fan can impact its visual appearance and integration with the building's design.
Warranty and support : A good warranty and support are important for ensuring that the roof extractor fan operates as intended and that any issues can be addressed quickly and effectively.

These are some of the key features to consider when purchasing a roof extractor fan, but the exact features will depend on the specific requirements of the building and the user.

Here's how a typical motorized roof ventilator works?

Electric rooftop ventilators are usually equipped with a motor and fan blades that generate airflow. The motor is powered by electricity, and it drives the fan blades to move air in and out of the building. Some models may also include features like variable speed controls, automatic shut-off mechanisms, and built-in sensors for temperature, humidity, or air quality.

Vayuvents is the most prominent manufacturer and suppliers of Roof Extractor Fan. This is used on the roof of industrial sectors, for extracting and exhausting contaminated air. It is manufactured using the finest quality materials in accordance with set industry norms. Our clients can avail this Motorized Roof Extractor Fan in various specifications as per their needs at low price rate. Vayuvents Roof Extractor Exhaust Fan are highly efficient aerofoil fan which gave around 20 to 35 % power saving over any of the existing conventional vent type, tube axial, or propeller type fans. Roof Extractor are available in three models and the tentative capacities with dimensions with the most efficient with very less investment and high durability FRP Base motorized Roof Exhaust fan / Attic Fan for Heat / Fume Stale / De- humidification in any working plant and this fan provide Forced draft ventilation by creating negative induced draft pressure inside the working plant.

Installation : The ventilator is mounted on the roof, usually near the peak or in a specific area that allows for efficient air circulation.

Motorized fan : The ventilator consists of a motorized fan that draws air from the attic space and expels it outside. The fan is typically powered by electricity and is controlled by a Special design Aerofoil Blades.

Airflow : As the fan operates, it pulls fresh air from the intake vents located at the soffits or lower areas of the roof, replacing it with outside air. This creates a flow of air that helps to remove heat and moisture from the attic.

Components of Roof Extractor Fan :

A roof extractor fan typically consists of the following components :

Fan unit : The main component of the roof extractor fan is the fan unit, which is responsible for generating air movement.
Motor : The motor powers the fan unit and is usually mounted on top of the fan unit.
Ducting : Ducting is used to channel the hot and stale air from inside the building to the roof extractor fan.
Grille : The grille is the external cover for the ducting and is usually installed on the roof or the wall.
Control panel : The control panel is used to switch the fan on and off and to adjust its speed.
Backdraft damper : The backdraft damper prevents air from entering the building through the ducting when the fan is not in use.
Rain hood : The rain hood protects the fan unit and ducting from rain and other elements.
Wall or roof penetration : A wall or roof penetration is necessary to install the ducting and fan unit, and it must be properly sealed to prevent leaks.
These are the typical components of a roof extractor fan, but the exact components may vary depending on the specific model and the requirements of the building.

Applications of Roof Extractor Fan ?

Roof extractor fans are used in a variety of applications, including :

Commercial buildings : Roof extractor fans are used in commercial buildings to maintain a comfortable indoor environment and to help prevent the buildup of moisture and heat.
Industrial buildings : Roof extractor fans are used in industrial buildings to remove fumes, smoke, and other pollutants from the indoor environment.
Agricultural buildings : Roof extractor fans are used in agricultural buildings, such as barns and stables, to improve air quality and ventilation.
Food preparation and processing : Roof extractor fans are used in food preparation and processing facilities to remove grease, smoke, and other odors.
Greenhouses : Roof extractor fans are used in greenhouses to regulate temperature and humidity levels and to promote healthy plant growth.

These are some of the main applications of roof extractor fans, but they can be used in a wide range of other applications where proper ventilation is required.

Vayuvents is a leading manufacturer of industrial fans & blowers, trusted by hundreds of manufacturers across India. We deliver world class fans that are designed to deliver efficient output for your businesses, while also taking into consideration the welfare of your staff and labor workforce.

Benefits of motorized roof ventilators ?

Temperature regulation : By expelling hot air from the attic, the ventilator helps to reduce the overall temperature, which can help lower cooling costs and extend the lifespan of the roof materials.
Moisture control : The ventilator helps to prevent condensation and moisture buildup, which can lead to mold growth, wood rot, and other issues.
Energy efficiency : By reducing the load on air conditioning systems, motorized roof ventilators can contribute to energy savings and more efficient cooling.
Improved air quality : The constant airflow helps to remove stagnant air, odors, and pollutants from the attic, promoting better indoor air quality.
It's important to note that while motorized roof ventilators can be beneficial in certain circumstances, they may not be necessary or effective in all situations. Factors such as climate, insulation levels, and attic design should be considered before installing a motorized roof ventilator. Consulting with a professional or an HVAC specialist can help determine if a motorized roof ventilator is suitable for your specific needs.

Sr No. MODEL A B D C Weight (kg) Max Motor Frame Size
Min Max
1 MRF-100-96-24 1800MM X 1065MM X 4MM 615 200 400 450 45 80
2 MRF-150-96-32 2000MM X 1065MM X 5MM 815 200 500 550 60 90L
3 MRF-300-96-36 2000MM X 1200MM X 7MM 915 250 600 650 85 112M

SR No Fan Model Fan Dia (In mm) Motor Rating (HP/Pole) Motor F/S (In RPM) Free Air (m3/hr) Volume Flow in m3/hr at different Static Pressure in mmwg Stock
5 10 15 20 25 30 40 50 60 70 80 90 100 110
1 MRF-100-96-24 610 1.0/4 1440 11200 - - 11000 - - - - - - - - - - - 1
2 MRF-150-96-32 810 1.5/6 960 17288 - - - 16800 - - - - - - - - - - 1
3 MRF-300-96-36 910 3.0/6 960 28110 - - - - 28000 - - - - - - - - - 1


1. Fan selection is based on air at 20 celcius and density 1.2 kg/m3
2. Fan performance and tolerance as per IS 3588-1987