Rating of the best ventilation deflectors for 2024

Ventilation systems are essential to maintain a healthy indoor climate. In order for them to be beneficial, air circulation is necessary, but its strength is not always enough. And in such cases, it is recommended to install ventilation deflectors, which increase air draft.

What is a deflector

The deflector is an additional device, or rather a nozzle that is put on the outlet of the ventilation duct, which, under the influence of the wind, creates a vacuum and thereby reduces the aerodynamic resistance of the air flow at the outlet. In addition to creating additional thrust, the device also:

• performs protective functions, does not allow precipitation to enter the duct channel;
• protects against wind, various debris, birds inside the pipe
• prevents the formation of back draft and the accumulation of fat on the walls of the duct system;
• the device also extinguishes sparks and removes smoke.

The basic principle of such a device is based on creating a discharge and increasing the strength of air flows. Some manufacturers equip designs with electric fans.

Varieties of nozzles

there is a fairly large list of goods on the goods market, but they are all subdivided into several types:

• TsAGI, this type was developed at the Central Institute of Aerohydrodynamics and is one of the most common. The design is simple and consists of a metal tube with a screening cylinder and a conical umbrella located inside. It does not allow the draft to be blocked in strong winds and protects the ventilation duct from clogging and precipitation. For full functioning, the structure must be placed above the roof at a height of 1 to 1.5 meters. Among the advantages of this cap, there is the possibility of replacing some steel parts with cheaper plastic ones. The disadvantages include covering the surface with a snow crust in winter, which becomes an obstacle to normal air draft.
• Grigorovich's cap, a simple design, consisting of a pair of umbrellas connected by a common "plate". Such structures can often be seen above the roofs of garages, basements of small buildings. But a more complex and modified model is Volpert-Grigorovich, which includes a diffuser, an inverse cone and a cover connected together.
• A turbo deflector or rotary turbine looks like a ball.Such a device works due to the rotation of the blades, of which the spherical part of the device consists. The thrust is enhanced by the wind and the built-in fan. Such a device allows you to quickly refresh the air in the room, without using electricity;
• A weather vane is another type of complex design, the wing of the device is always turned with its back to the wind, which prevents spindle flows from entering the ventilation shaft. A zone of reduced pressure is formed behind the base of the nozzle, which facilitates the exit of air;
• The H-shaped deflector has a more complex structure and consists of one horizontally and two pipes located along the edges. Horizontal and vertical are reminiscent of the letter "H". Such a device perfectly copes with increasing traction and with protection from external debris and moisture, a cap that looks like a plate, the visor is attached to it on hairpins, creates an air flow, protecting ventilation from possible precipitation. This type is perfect for industrial and industrial premises, one of the features is that such models do not have a protective cap, since there is no need for it. And also a plus can be called the fact that such a structure does not need to rise above the roof of the premises, it is enough to place one side on the wall, and the other on the roof.

Devices are used depending on the design and are divided into:

• roof, that is, those that are used on chimneys in private and multi-storey buildings, on the roofs of industrial and garage premises, as well as other buildings;
• basement - designed to regulate air flows in basements, freshening the air, removing dampness and accumulated harmful gases;
• automobile, respectively, used in vehicles, devices are designed to cut off the air flow, as well as prevent the entry of various objects, debris, dirt and many other things that can fly from the street into the car, they are placed on the side of the side windows, the roof or above the headlights, shape and dimensions will depend on the vehicle model;
• for air conditioners, special deflectors-screens have been developed that reflect the air flow and distribute it evenly throughout the room. There are internal and external.

As for the appearance of the attachments, they are of several types:

• flat;
• semicircular;
• as well as gable.

By design, exhaust hoods are also divided into several types. Fixed (static), are considered the simplest and are often made with your own hands. Static with a built-in fan placed under the wind canopy.

Material for making

Ventilation hoods differ not only in type, but in the material from which they are made:

• From plastic, such devices are quite fragile and therefore are rarely found on store shelves;
• Made of metal covered with plastic, such models are more durable and have a rather attractive appearance;
• From the metal intended for the manufacture of boilers, such devices are expensive, but they are highly resistant to burning out from the effects of hot air currents;
• From galvanized steel, products from this metal are considered the most common since they have an affordable price and at the same time have good strength;
• Aluminum, which is also popular with manufacturers, has good durability and an affordable price.

There are also caps made of copper, but they are too expensive and therefore this metal is practically not used for the manufacture of deflectors.

Selection features

The design of the hoods is not complicated, but despite this, buyers should pay attention to the following points:

• the material from which the deflector is made;
• How does it work;
• take into account all the features of the device.

The choice is also made taking into account:

• in the presence of little or no thrust, choose rotary nozzles or in the form of a weather vane;
• when purchasing a rotating nozzle, it is worth knowing that inexpensive devices work with an open sleeve, which freezes in winter, it is recommended to pay attention to those that have a closed hinge;
• caps in the shape of the letter H are perfect for areas where strong winds are present.

Dynamic hoods are suitable for all types of terrain, but must be serviced periodically.

Installation

The installation process is simple, but it should be remembered that not all actions are carried out directly on the roof, since the hood and the base of the device should be connected in advance, for convenience. So, the installation consists of:

• from the installation of the device on the inlet pipe and fixing it to it, this is done with special fasteners or bolts. In the second case, you will need to drill inlet holes for them;
• fixing the diffuser funnel with clamps or brackets;
• placing the hood on the diffuser.

The last two steps are carried out before installing the device on the ventilation duct.

Experts in the field of installing such structures, recommend following some tips:

• The device is installed both on a straight line and on a pitched roof surface, chimneys and ventilation. The choice of location depends directly on the purpose for which it will be used.
• If the surface is sloping, then it must be installed at the highest point; on a flat one, before installation, take into account the possible height of the snow cover and place it higher. It is recommended to set a level of at least 18 cm.
• In order to avoid heat loss during the cold period, it is possible to install special valves for residential premises and adjustable air intakes for non-residential buildings.

When installing the device on a chimney, remember that it automatically lengthens its height.

Rating of high-quality ventilation deflectors popular among buyers

Various companies offer a huge selection of different types of deflectors, but users note the most successful models that they recommend for purchase:

• Roof deflector / D 200 mm;
• Deflector ridge Alipai / 75;
• Wirplast / К88-2 non-insulated D125;
• The deflector is pitched;
• Galvanized metal turbo deflector, D 100 mm;
• Roof deflector / TD-150;
• Base deflector / TechnoNIKOL, brown;
• Base deflector Vilpe / Ross-125/135 790311.

Roof deflector / D 200 mm, galvanized steel

This model is produced by the Russian company "Aeroblock", in addition to hoods for ventilation systems, it produces filters, silencers, air valves and other products that are in great demand. The material from which the device is made is galvanized steel 0.5 mm thick. The hood consists of a base, which is in the shape of a circle, a cone-shaped diffuser with truncated edges and an umbrella.

• increases traction;
• protects from dirt and debris;
• the cap is made of a material resistant to corrosion;
• versatile;
• has thick walls;
• budget price.

• weight reaches 4 kg;
• not suitable for all ventilation outlets.

Deflector ridge Alipai / 75 for roof ventilation

It is produced by a Russian-Finnish company in several versions, or rather in sizes 31, 38, 43 cm. The diameters of the caps also differ, which makes it possible for buyers to choose the appropriate size. The weight of the structure is 0.8 kg and among this type it is considered universal, the base is made of a pair of inclined planes, which allows you to install an object on roofs, the angle of inclination of which is 27 degrees. Mount the model directly under the roof.

• you can choose a suitable size;
• pleasant appearance;
• a light weight;
• efficiency fulfills its objectives.

• high price.

Ventilation outlet Wirplast / K88-2 uninsulated D125 brown

The Polish brand Wirplast, is engaged in the manufacture of this model of the hood, which is suitable for installation in rooms, in kitchens and toilets, as well as in sewer shafts.The device is made of polypropylene, has a diameter of 12.5 cm and a height of 50 cm and is installed on a pitched roof surface.

• product quality;
• stylish appearance;
• enhances cravings well.

• the price is high.

Deflector pitched VILPE ​​/ ALIPA 110

The model is manufactured by the Polish company VILPE ​​/ ALIPA, consists of a passage element and a protective cap that protects the ventilation from precipitation. The company itself produces ventilation systems, seals, reinforcements, gutters and much more.

• does an excellent job with its functions;
• stylish appearance.

• the price is quite high;
• the model is not suitable for all types of roofs.

Galvanized metal turbo deflector, D 100 mm

Made in Russia, the model is made of high-quality galvanized steel with a thickness of 0.45 mm, which makes it lightweight. Thus, the blades of the product rotate even with the slightest wind flow, increasing the natural draft in the ventilation tunnels by up to 20%. Due to the use of high-quality materials in the manufacture, the service life reaches 15 years. The design perfectly protects against the ingress of natural precipitation, debris into the ventilation.

• appearance;
• works effectively, regardless of which direction the wind is blowing;
• long period of operation;
• easy to install;
• works great even with big minuses on the street;
• additional energy is required to operate.

• the price is high.

Roof deflector / TD-150

The manufacturer of the TD-150 turbo deflector is Russia, the model is used on the roofs of residential premises, factories, garages, basements, toilets, the number of installed hoods depends on the area of ​​the object. The device is ideal as a smoke nozzle for chimney systems. Galvanized or stainless steel is used as a material for manufacturing. Thanks to the installation of a turbo deflector, the draft of ventilation systems increases by up to 20%, in order to obtain a better operation of the device, it is recommended to install it on the pipes of ventilation ducts located slightly at an angle.

• the look of the device is pretty pretty;
• works quietly but efficiently;
• the metal from which they are made;
• an increase in thrust by 20%;
• good protection of mines from various debris and precipitation.

• small dimensions;
• high price.

Base deflector / TechnoNIKOL

The basement deflectors of the Technonikol company are made of polyvinyl chloride resistant to alkalis, acids, solvents. Depending on the additives in their manufacture, they can also have high fire resistance, but are not designed for severe frosts. Suitable for use in all basements, that is, both residential and non-residential buildings.

• stylish design;
• easy to install;
• does an excellent job with its functions;
• it is possible to adjust the length.

• the price is quite high compared to other models;
• has low frost resistance.

Base deflector Vilpe / Ross-125/135 790311

The Finnish brand Vilpe is engaged in the manufacture of various accessories for roofs and products for equipping ventilation systems in buildings and premises. The basement deflectors of this company are also made of polyvinyl chloride, which, in addition to being resistant to various acids, alkalis and fire, also has a long service life. Stylishly executed design, complements a large number of colors, allowing customers to choose a color that matches the color of the facade. In order for the device to hold more steadily, it is attached to the building wall with brackets, but you do not need to purchase them additionally, as the kit includes the deflector itself, clamps (2), wall brackets (4), nuts, screws, dowels.

• stylish design;
• full set;
• variety of colors;
• ease of installation;
• long service life;
• good protection from precipitation;
• does an excellent job of purifying the air in basements and renewing the air.

• expensive device;
• additional mounting is required.

The deflectors of the device, which should not be neglected, since thanks to them, the provided ventilation will cope with the tasks more efficiently. As a rule, the installation of devices is not difficult; you can do it yourself or with the help of a specialist.