Periodic ventilation prevents stagnation of moist air, the appearance of fungus, mold and rust. For proper air exchange, silent exhaust fans are installed in the bathroom. The unit received this name due to the minimal indicators of the reproduced sound. The device produces noise that fluctuates between 20-25 dB. The sound pressure range is equal to a barely audible whisper. Being three steps from the unit, the noise from the rotation of the blades cannot be heard.
The ventilation system occupies a special place in the improvement of living space.
Benefits of a silent fan
The advantages of a silent fan include the following indicators:
- reduced amount of vibrations;
- low noise level;
- high performance;
- excellent quality of materials, assembly and components;
- convenient operation;
- easy installation.
The disadvantage of the device is the price, which is more than compensated by the listed advantages.
A hood in a bathroom or toilet with a built-in silent fan is a compact, multifunctional and energy-intensive device.
Top 10 Best Bathroom Fans
DiCiTi AURA 4 8.4 BT
Standard and inexpensive domestically produced products. This design is ideal for a small bathroom. The fan is quite weak and consumes little electricity, but even its power is quite enough to ensure air exchange at a speed of up to 90 cubic meters per hour. This model operates almost silently - when turned on, it emits no more than 25 dB. The manufacturer has provided the device with a reliable overheating protection system.
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It is quite acceptable to leave this fan on for quite a long time. Consumers claim that the power of such a device is quite sufficient not only for the bathroom, but also for a separate toilet and even a spacious kitchen. The design of the device is quite standard; there are no distinctive details here, although the fan looks quite attractive.
Advantages:
- It works very quietly - the noise level is only 25 dB;
- Careful and high-quality protection against overheating is provided;
- Reasonable cost;
- The engine runs on ball bearings;
- Consumes a fairly small amount of electricity;
- Easy to install.
Flaws:
- The engine is rather weak - its resource is not enough for a spacious bathroom.
DiCiTi AURA 4 8.4 BT
Blauberg Quatro 100 14 BT
The model indicator of this device is even lower - only 88 cubic meters per hour, but this is fully compensated by the presence of a special check valve in the device. With its help, it will be possible to prevent unpleasant odors from entering the room from the ventilation shaft. In addition, this fan can be mounted directly in the ceiling.
In terms of key parameters, the model turned out to be of quite high quality, which is not too surprising, since it is produced by a German factory. The highest quality plastic is used for production. The assembly is excellent, so we managed to achieve very good waterproof parameters. This model is produced in several color options - white, gray and yellow. It is not too noisy during operation - only 33 dB.
Advantages:
- Presence of a check valve;
- It is possible to mount directly into the ceiling;
- The case is carefully protected from moisture penetration;
- It works quite quietly;
- Reasonable price.
Flaws:
- Air exchange rates could be higher.
Blauberg Quatro 100 14 BT
CATA E-120 GTH 15 BT
The model is very expensive, but the workmanship is also at a very decent level. This axial design has a standard installation diameter of 118 mm. The product looks very stylish, largely thanks to the front panel made of high-quality, carefully tempered glass, which allows the fan to optimally fit into the modern interior of a kitchen or bathroom. The air exchange of the fan is about 210 cubic meters per hour - quite a decent figure, so these products are often installed in spacious rooms.
The case has received high-quality moisture protection, so the device tolerates high humidity conditions well. The model is equipped with a display, has a built-in humidity sensor, a shutdown delay function and a 15-hour timer. The device operates quite quietly - it creates only 33 dB of noise.
Advantages:
- Stylish and attractive appearance - fits optimally into any interior;
- Expanded functionality of this model;
- Reliable protection against moisture ingress;
- The device operates quite quietly;
- Equipped with a timer and display.
Flaws:
- It's very expensive.
CATA E-120 GTH 15 BT
Dospel Styl 100 S 15 BT
Despite the quite reasonable price, this Polish-made exhaust fan easily copes with the functions assigned to it and is characterized by very high performance qualities. With a product power of 15 W, air exchange reaches 100 cubic meters per hour. Manufacturers saved a lot on design - the device turned out to be very simple and, to some extent, even nondescript. It is completely unobtrusive, which pleases many users, since this device will fit organically into any interior of the room.
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The fan has a fairly long service life. Its body is made of reliable plastic, which is resistant to serious temperature changes, exposure to moisture or other aggressive environments. It will retain its original appearance for a long time.
Advantages:
- Reasonable cost;
- Long period of operation;
- Modest external design;
- Excellent plastic quality;
- It is easy to care for this device.
Flaws:
- One of the noisiest devices in our entire review.
Dospel Styl 100 S 15 BT
CATA E-100 GTH
Another model from a well-known Spanish company that produces a large variety of overhead fans of the most modern type. This device has advanced functionality and a very unusual appearance. There is a timer equipped here that can turn off the device strictly at a given time. In addition, the fan is also equipped with a display that has a built-in humidity level indicator. The power consumption of the device is quite insignificant - it only needs 8 W, but this factor does not in the least prevent the device from driving up to one hundred cubic meters of air through itself within an hour.
The product has a very long service life, largely due to the excellent build quality and materials used in production. It has a unique switch-off delay feature that will keep the device on for some time. The front panel is available in white or gray colors. The design is stylish, all lines are strict.
Advantages:
- Convenient and functional display with humidity sensor;
- There is a timer;
- The housing is completely sealed;
- There is a built-in thermometer;
- Attractive appearance.
Flaws:
- It's very expensive.
CATA E-100 GTH
Soler & Palau HV-300 A
The most expensive product in our entire review. However, it is really capable of impressing with its useful characteristics. First of all, this model is distinguished by very high power - it consumes about 68 W of energy, which allows you to achieve excellent air exchange rates that reach 1100 cubic meters per hour. This overhead fan is able to ensure uniform air circulation in the room in the shortest possible time and create optimal humidity levels.
The device comes with a remote control, which is very convenient during operation. With its help, you can quickly select the most suitable speed mode - the fan blades can rotate at one of two speeds. The device was developed specifically for large bathrooms. It is usually purchased for themselves by owners of country houses and fairly large apartments.
Advantages:
- Excellent fan efficiency;
- If desired, you can control it remotely via the remote control;
- Possibility of installation on glass;
- Resists wear well;
- There is a check valve.
Flaws:
- The cost is very high;
- Consumes a lot of electricity;
- Quite a noisy device.
Soler & Palau HV-300 A
VENTS 100 Quiet
Products of excellent quality at a very affordable price. The fan itself has compact overall dimensions - 15.8 x 15.8 x 10.7 cm, so it is suitable even for small valves. The device is characterized by low power parameters - it consumes only 7.5 W, which ensures air exchange at the level of 95-100 cubic meters per hour.
Perfect for a small bathroom - it quickly removes excess water vapor, preventing it from being absorbed into the walls and ceiling of the room. The fan itself is equipped with high-quality protection against water penetration under the housing, making the device reliable and durable. The device is equipped with a check valve that prevents contaminated air from entering the room. The fan operates almost silently.
Advantages:
- Low cost;
- Creates a noise level of only 25 dB;
- Very powerful engine with a lot of revolutions;
- Compact design;
- Elementary device;
- Insignificant mass.
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Flaws:
- The outer part is large, so it is too conspicuous.
VENTS 100 Quiet
ERA AURA 5
The top three best fans for the bathroom are opened by a Russian-made model, which is very popular among users. It is characterized by optimal operating parameters: the power is 10 W with an air exchange of about 180 cubic meters per hour. Such indicators can ensure the most efficient circulation of air flows in the room, while maintaining an optimal level of humidity. The design is quite simple, but very reliable.
The fan has a useful function: high-quality protection against overheating. The device operates relatively quietly - the noise level is 30-32 dB, it also has low weight and compact overall dimensions.
Advantages:
- The body is made from reliable and durable materials;
- Reasonable cost;
- Quite good efficiency;
- The warranty period is 5 years;
- A powerful and modern engine is installed.
Flaws:
- For a medium-sized bathroom, its power will not be enough.
ERA AURA 5
Electrolux EAF-150
The device was developed by Swedish engineers, but is produced at Chinese production facilities. It proved to be most effective in its work. The device turned out to be quite powerful - it consumes 25 W of energy. Thanks to this, the design creates fast and efficient air circulation inside the room. It copes with its task perfectly and can be used even in spacious bathrooms and kitchens.
The air exchange rate is significant - 320 cubic meters per hour. The design is characterized by high performance and excellent wear resistance. The housing is carefully protected from moisture penetration.
Advantages:
- Stylish appearance;
- The optimum ratio of price and quality;
- Decent power level;
- Available in several color options;
- Suitable even for fairly spacious rooms.
Flaws:
- Some people are still prejudiced against Chinese-made products.
Electrolux EAF-150
Soler & Palau SILENT-100 CZ
The leader in the ranking of the best bathroom fans turned out to be a fairly simple device, which is also distinguished by its quite affordable cost and optimal performance indicators. The fan here turns on along with the light in the bathroom and continues to work as long as a person is there.
The design type of the device is axial, the fan itself is placed in a moisture-proof housing, the air exchange rate is about 95 cubic meters of air per hour. This is the best option for a small bathroom. The noise level is also low - 27 dB.
Advantages:
- Reliable protection against moisture;
- Easy to use;
- Reasonable cost;
- Works quietly;
- Long service life;
- Decent quality product.
Flaws:
- Not very convenient to clean.
Low noise exhaust fan Soler and Palau Silent 100 CZ: unboxing and test
Soler & Palau SILENT-100 CZ
Why is there a fan in the bathroom?
A bathroom is a room in which the temperature and humidity are always elevated. According to current legislation, bathrooms in residential buildings must be provided with forced or natural ventilation. The accumulation of excess moisture in the air leads to corrosion and mold. The latter is the worst enemy for human health. Prolonged proximity to a colony of microscopic organisms leads to a deterioration in health. It is manifested by the following symptoms:
- headache;
- dizziness;
- diseases of the respiratory system;
- general exhaustion of the body.
Due to the wide range, the consumer often faces difficulties in making the right choice.
Since mold toxins fill the entire space, stale air first turns into an invisible “killer”, and then slowly poisons the apartment owners. By installing a silent exhaust fan in the bathroom, you normalize the level of humidity and temperature. By removing exhaust air, the device neutralizes dust particles, viruses, harmful fumes and carbon dioxide.
Functional
We have more or less sorted out the types of silent exhaust fans, and now we move directly to the characteristics and all possible functions. Good brands quickly help provide effective forced ventilation. The operation of a check valve is very useful, protecting the internal space from external air masses.
There are several types of valves: the passive type works only when the impeller is activated, the automatic one has a manual opening and closing system, the self-closing type is activated using a specialized spring.
By the way, sometimes it is not included in the model at all, which usually indicates its cheapness. It is very important that moist air leaves and clean air flow comes in.
You can make your choice in one direction or another. The features of the modifications are not too critical. It is the specific buyer who decides what he needs. Passive ones almost never break down, and electric ones are more convenient and comfortable to operate. Failures happen, but they are not fatal.
Types of silent fans
Appliances for household hoods vary in design and installation location. By device type they are:
- duct;
- axial;
- radial;
- invoices.
There is another classification - according to additional functionality. The devices may have manual and electronic switching modes, light, motion and humidity sensors. The model range is also divided according to the installation location into the following categories: wall-mounted, ceiling-mounted and built-in.
Every bathroom has a ventilation system. However, many, especially during the renovation process, prefer to close it at the stage of finishing work.
Fans are also distinguished by design:
- with flat front panels;
- with backlight;
- with matte and glossy panel.
The unusual appearance of the device can become the highlight of the bathroom design.
It is recommended to install forced ventilation, which includes a silent fan.
About the channel
The device is installed at the base of the duct. Since the housing is not equipped with rubber elements, additional vibrations and noise occur during operation. Despite this design feature, the unit is much more efficient than a conventional fan.
A duct fan is one of the most effective ways to improve air exchange in a room.
About the axial
The impeller passes air in the direction of movement of the engine rotor. The device body suppresses 80% of noise.
An axial fan is found in almost every home today.
About radial
It is extremely rarely used in domestic conditions. Radial type devices can be found in the workshops of industrial enterprises. To install a ventilation system, you will need to make several channels, each of which will have a separate fan installed. The large-sized device produces minimal noise, but due to its large size it has become persona non grata in residential buildings.
A radial fan has a specific principle of organizing air flow.
About the invoice
The most commonly used exhaust fan model. It fits into the ventilation shafts of apartment and private buildings. The unit is easily installed by mounting it at the outlet of the ventilation duct.
Overhead bathroom fans are one of the most common types of fans for home use.
Types of silent bathroom fans with check valve
Quiet fans with a check valve can vary in power, installation location and other features. Let's consider several types of them, suitable for a bathroom in an apartment.
Axial
Fans of this type can be mounted in walls and ceilings. There are also overhead variations. The engine in them turns a bladed propeller, and the entire structure is enclosed in a cylindrical body. Depending on the power, more than a hundred cubic meters of air can pass through them in an hour, but their pressure is weak. Characterized by ease of installation.
Radial
These fans are preferred to be installed in the walls of medium-sized or large-sized bathrooms. The mechanism itself is located in a spiral casing. This design ensures uniform displacement of air from the blades to the walls, and then transports it into the air duct.
Duct
Silent fans of this type are mounted above the ceiling in an air duct, and then hidden using plasterboard, which allows air to be extracted from several places in the bathroom. Suitable for large premises. They are cylindrical or rectangular in shape, but always with vertical blowing.
Roof fans
Such a ventilation system can only be installed in country houses. They are mounted in the ceiling and permeate the entire building. And the air is exhausted through a pipe on the roof. They are difficult to stop, but have high power.
In addition to classification by design, fans can be distinguished by type of control. They come with a control panel on the fan itself, as well as variations with a remote control. There may be a rotation speed setting.
It was already mentioned above that in advanced fans, activation can occur due to various sensors (motion, humidity) or a timer.
Fan sizes
Manufacturers produce models with different diameters. The volume of air masses removed directly depends on its size. The more air the device removes, the faster the condensation in the room disappears. But at the same time, the more often the fan replaces room air, the faster the bath “cools down” and becomes cold. The operation of the heating system at home can be negated by an incorrectly selected diameter of the device.
Important! Excessive performance of the unit leads to excessive consumption of thermal energy carrier.
After installing the fan, you will gain many benefits.
For a private house it is much more difficult to think through a ventilation scheme than for an apartment. Design organizations took on the headache of high-rise building residents. They made the necessary calculations even before laying the foundation. The owners of the living space just have to choose a bathroom fan that fits the size of the ventilation hole.
The minimum fan diameter size is 80 mm, and the largest is 200 mm. According to the standard, all device dimensions are multiples of 20 mm. The dimensions are directly related to the type of device design. The devices are produced in standard sizes:
- channel type – 200 mm;
- exhaust – 100 mm;
- axial – 125 mm.
With a fan, you will get rid of the problem of mold and mildew associated with high humidity in the room.
The configuration of the device is round, rectangular and square.
Important! The configuration of the unit must correspond to the shape of the ventilation duct.
Criteria for choosing a duct fan
Channel-type devices are installed in shafts and air ducts in which the environment is characterized by variable temperature and high humidity.
In this regard, the working mechanism is enclosed in a waterproof housing, and some models are protected from splashes. When choosing, pay attention to the marking - it must be at least IP X4.
For installation, the determining factors are the dimensions and installation location, so check the diameter of the air duct and check the package so as not to buy additional fasteners
For metal and brick shafts, the weight of the fan is not so important, but plastic air ducts can become deformed due to the large mass of the device. When purchasing, be sure to make sure that the weight of the unit will not affect the performance of the air duct.
The functionality of the ventilation device depends on the following characteristics:
Image gallery
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Device power and performance
Air exchange in the room
Body and blade material
Unit noise level
Among the large assortment of modern models, there are also more “advanced” ones, with speed adjustment and the ability to control from a distance. A separate group refers to “intellectual” technology. “Smart” fans are equipped with timers and motion sensors, and you can adjust the humidity level and set the ventilation mode.
Ultimately, the user decides for himself which duct fan to choose for his home or business, but reviews and ratings help determine the best option.
Moisture resistance of the device
Devices are marked according to IP protection classification. The higher this indicator, the more reliable the device. The bathroom is a place where splashes and steam cannot be avoided. The household appliances present here are constantly in the “risk zone”. If the room is damp, electrical appliances may fail due to a short circuit. In order to protect household appliances, it is necessary to install fans with a moisture-resistant housing. The safety of the working elements depends on the material of its manufacture and the quality of assembly. The durable housing, which is hermetically sealed, prevents moisture from penetrating inside.
There will be no sudden temperature changes in the room if there is a home hood.
Important! When ordering a device, look at the IP marking. It contains letters and numbers. The first number indicates the degree of protection from mechanical damage and dust, and the second – from water. Choose a device with a higher number. The higher it is, the more stable the body is. The degree of protection leaves no chance for moisture, which can disrupt the operation of electrical parts.
Those who like to take long hot baths will benefit from a device that can withstand high temperatures. This category of fans operates smoothly at temperatures from 70 to 180o C.
Models with extended functionality
Ventilation hood devices are also divided according to the presence of additional options:
- check valve;
- closing blinds;
- timer;
- individual switch.
Each species is interesting in its own way.
The need to deal with unpleasant odors will disappear, as the air is constantly replaced.
Fan with check valve
The device prevents backflow of air. When it is not working, air masses from the ventilation duct do not flow inside. Installation of this model is recommended in high-rise buildings, where pressure differences are created between neighboring apartments, or air leakage occurs from a common ventilation shaft.
A practical, silent bathroom fan with a check valve quickly removes mustiness and unpleasant odors.
A fan with a check valve is also installed in houses where the hood goes directly to the street. Here the device not only prevents the influx of air masses from the outside, but also prevents the entry of dirt, dust, smoke, insects, allergens and small particles. Thanks to its design feature, the fan reduces heat loss that leaves the room along with the exhaust air.
Fan with timer
A practical and economical unit among its analogues. It not only takes care of the microclimate of the bathroom, but also reduces electricity costs. The device operates with a delay and responds to turning the light on and off. When the bathroom light is turned on, the fan starts after N amount of time. And when the light is turned off, it stops working after a few minutes. The timer is responsible for delaying the startup and shutdown of the device.
Bathroom hoods with a timer are very easy to use.
Time-based forced exhaust significantly reduces utility bills and extends the service life of the device. The delay range ranges from 3 to 30 minutes. You can set the delay time at your discretion. The timer block is reliably protected from splashes and foreign particles.
Battery powered fan
A quiet device that operates not from a battery, but from batteries. This model is appropriate in rooms with extremely high humidity and in places where it is difficult to connect it to the general power supply system.
The battery-powered device greatly simplifies the installation of the hood.
Fan with curtain
The unit with automatic blinds is an extremely simple device in design. It is equipped with an electric motor, which is responsible for the movement of the axis. The impeller blades rotate along with the axis. The low-noise fan, equipped with a curtain, is controlled by a special built-in drive. When the device is inactive, the blinds close, thereby preventing reverse draft and drafts. The following indicators are also attributed to the strengths of the model:
- compact dimensions;
- simple installation;
- minimal electricity consumption.
An automatic exhaust fan is suitable for families with small children and people who are prone to colds from the slightest draft.
Recommendations for selection
A lot depends on the correct choice of a silent bathroom fan with a check valve: from functionality to energy costs. The power and air exchange of the system must correspond to the size of the bathroom. The color and shape of the fan must fit into the interior of the room, with the exception of hidden installation options, where it will not be visible. Additional fan functionality is not necessary for everyday purposes, but will increase ease of use.
From the list above, the buyer will be able to choose the option that is suitable in terms of price, performance and necessary functions.
Which device should I buy?
When choosing a bathroom fan, consider the following characteristics:
- workmanship;
- location;
- type and size of the ventilation duct section;
- performance;
- additional options;
- noise level;
- design.
To determine the performance of the device, it is necessary to calculate the exhaust ventilation based on the air exchange rate. This concept refers to the number of times the air is replaced with fresh air in one hour. For the calculation, take the area of the bathroom, and the air exchange rate is equated to 7 times.
If the fan is installed correctly, then there should be no problems with its operation, and it will effectively cope with the amount of air intended for it in the room.
For example, you have a bathroom with an area of 5 m2 with ceilings of 2.75 m. This means the volume of the room is 13.75 m3. Multiply the resulting value by 7. The result will be the required fan performance.
All devices produce noise from air movement or vibration of working elements. Its level depends on the configuration of the housing, the impeller and its rotation speed. The more successful the combination of these factors, the quieter the device operates.
Based on the room, its dimensions and the preparation of the ventilation shaft, you can choose the right fan.
Important! The higher the performance, the louder the sound produced.
For a standard bathroom with an area of no more than 9 m2, models with an air exchange rate of up to 100 m3/h are used. In this case, the noise will be minimal. But if the apartment has a large bathroom, then you will need a more powerful unit, which causes more noise. To reduce the noise pressure level, it is necessary to select the appropriate fan operating mode. For example, a high-performance model with a timer is suitable.
If you don’t know which fan is best to choose for your bathroom, rely on the popular models from the rating below.
By installing the fan correctly, you can make your stay in the bathroom comfortable and enjoyable.
Which duct fan is better
To buy a suitable duct-type fan, you need to choose a model based on the shape and area of the air duct, the volume of ventilated air, the length of the ventilation system, and the range of air temperatures in the room. One of the most important characteristics of a duct fan is the noise level. Models with backward-curved impeller blades are quieter than usual.
- The quietest model offered in the TOP is Soler & Palau TD-160/100 N Silent, it operates almost silently.
- Vents TT 100 is the most productive of the inexpensive axial devices in the rating. It is capable of moving up to 187 m3 of air per hour.
- Era Profit 5 is suitable for those who are looking for a cheap but reliable model. The cost of a fan starts from 700 rubles.
- Diciti Pro 4 is a durable device with a service life of 40,000 operating hours. It is protected from overheating and moisture, and is also not afraid of UV rays.
- The Dospel WK 315 semi-professional fan is suitable for installation in cafes, restaurants or industries with a wide air duct with a diameter of 31.5 cm. With high performance, it consumes a minimum of electricity.
- The reliable radial fan Zilon ZFO 200 is made of composite polymer, which has an extended service life and makes the device operate quieter. The model can be used at almost any temperature.
- Vanvent VKV-315E is a centrifugal model with a powerful engine and built-in automated control.
For home use, it is enough to buy an inexpensive model with a simple and reliable design. For restaurants, cinemas and other premises where a powerful fan is needed, it is better to choose professional equipment made from wear-resistant materials with a powerful motor. Whether additional options are needed, such as convenient speed switching or automated control, the buyer decides for himself based on the characteristics of the ventilated room.
Installation Tips
Before installing a new fan, you will need to dismantle the old one. It goes in the following order:
- de-energize the device from the mains;
- remove the cover;
- disconnect the wires from the power terminals;
- unscrew the holding screws;
- remove the device from the ventilation shaft.
For safe operation, as well as collection and further removal of condensate, many manufacturers add a special tray to the fan kit.
When the fan is glued to the plate, carefully dismantle the housing without widening the ventilation duct hole.
TOP 5 silent fans for the bathroom
The top five were headed by devices of different classes.
Fans of modern technology will like fans with a variety of sensors and lighting.
SILENT-100 CZ
The model provides excellent air exchange. The body is made of high-quality plastic, which does not lose its original appearance for a long time. Power is up to 90 m3/h, noise is up to 26.5 dB. When it works, only the sound from the movement of air is heard, and not the hum from the impeller.
Elicent Style 100 PRO
Fan with check valve from an Italian manufacturer. The main feature of the design is the suction of exhaust air from four sides. The performance of the unit is the same as that of the SILENT-100 CZ, but the noise level is higher - 31.4 dB.
The option of a corded switch and timer can be added.
Standard 4ETF
Fan with photo timer, powered by a photocell. The model is used for periodic and continuous exhaust, since the power is 100 m3/h. Accordingly, the noise level is higher - 35 dB.
Motors mm-100
An ultra-thin and incredibly quiet unit from a Bulgarian brand. It can withstand extremely high temperatures and produces a barely audible sound during operation. The disadvantage of the device is its low productivity of up to 60 m3/h. Suitable for small spaces.
The design mostly has only positive reviews.
EBB-250NS
High-performance model of a surface-mounted centrifugal fan. This type of device will be needed for a ventilation system with increased resistance in the duct.
The rating brings together the best devices of their kind. Choose a high-quality fan so that the hood works smoothly and the necessary microclimate is maintained in the bathroom.
Types of hoods
Before choosing a hood, you should understand their design features. There are two main types of fans:
- axial;
- centrifugal.
Axial fans are a bladed impeller in a housing with a motor that drives it. When rotating, the inwardly inclined blades suck in air and move it along the axis. Such devices are most popular for bathrooms in apartments. The devices are distinguished by their design, affordable price and ease of installation. They are installed on the wall in the ventilation shaft. Axial type models are characterized by high efficiency and performance. Hoods are made with capacities up to 100 cubic meters per hour and with greater power. The higher the performance value, the larger the fan opening diameter. Advantages:
- high performance;
- noise level;
- level of electricity consumption;
- compactness.
Among the disadvantages of the axial model is the inability to create high air pressure.
Centrifugal (radial) fans - the design consists of a blade wheel located in a special casing. When the blades rotate, air enters, resulting in compression and ejection by centrifugal force. The advantages include:
- improved aerodynamics;
- work in aggressive environments;
- air flow control.
Centrifugal hoods work well with high temperatures, suck out polluted air and are economical in electricity consumption. But they require an increased cross-section of the connection cable, and the noise level depends on the angle of inclination of the blades.
Hoods may also have additional design features such as humidity sensors, movement, timer or check valve. Let's look at each function separately.
A check valve is a device that regulates the exhaust and supply of air. It must be used in cases where there is reverse draft in the ventilation system. Food odors from neighbors, cigarette smoke, etc. should not enter the bathroom. If the hood has a check valve, air does not escape or enter the room when the device is turned off. When the hood is turned on, it opens the doors with a flow of air, allowing the ventilation process to occur. The disadvantages include the lack of natural air movement when the device is turned off.
Humidity sensor - measures the moisture level in the air and turns on the hood when it reaches a critical level. Thanks to the sensor, you can avoid using the switch when taking a shower.
Motion sensor - reacts to the presence of a person in the room and turns on the hood. It is especially convenient to use such devices in the toilet.
Timer - allows you to program the operating time of the hood. The advantage is that you can adjust the schedule and ensure uniform ventilation of the room throughout the day.
