Bathroom fans. Bathroom fan: making the right choice Centrifugal bathroom fans

If the mirrors and walls in the bathroom constantly fog up, the air is stale, and mold appears every now and then in the corners, this means that natural ventilation cannot cope with its task. Solving this problem is simple - you need to install an exhaust fan. The choice of modern exhaust devices is very wide - from the simplest to silent models with timers and sensors. To ensure the most efficient air exchange in the room, you need to know by what criteria it is worth choosing fans and how to install them correctly.

The design of the exhaust fan is quite simple: housing, motor, impeller with blades. There are models equipped with a check valve that does not allow foreign odors from other apartments to enter the room, which is very important for high-rise buildings.

The air duct of the exhaust device is connected to the general ventilation system or is output separately through the wall to the outside. According to the mounting method, all exhaust fans are divided into ceiling and wall, as well as built-in and overhead.

Ceiling ones are less in demand, although they are distinguished by high performance and simple installation. Such a fan is capable of actively circulating a large volume of air, so it is great for spacious bathrooms. But most consumers still choose wall-mounted models, both built-in and overhead. They are easy to install, easy to use, easy to clean and replace. Thanks to its compact size and modern design cases, they look quite aesthetically pleasing, fitting perfectly into any interiors.

Depending on the internal device, fans are divided into:

• electrical– simple models with built-in or external switch. That is, the residents of the apartment must independently turn the device on and off as needed. A very common option is when such a fan is connected to a general switch in the bathroom, and then the hood turns on simultaneously with the lamps. True, in this case, moisture does not always have time to completely go into the ventilation, but electricity consumption is reduced;
• automatic- exhaust devices equipped with special sensors. Models with humidity sensors automatically turn on as soon as the moisture level exceeds the norm, and turn off when the condensate has completely evaporated. Models with motion sensors turn on when a person appears and turn off when the room is empty. There are also automatic fans with timers that operate only for a predetermined interval of time.

Exhaust fans are also classified according to the type of construction. In the domestic sphere, the most popular are axial and channel devices that are suitable for multi-storey and private houses.

In axial fans, the movement of air occurs along the axis of rotation of the blades, which is the reason for such a name. The design is very simple: a body (usually cylindrical), an impeller with blades, an electric motor. Many models have a front-mounted manifold that improves aerodynamic properties. The structure of the blades reduces the resistance to air flow, so the fan has a high efficiency. According to the type of installation, such devices can be both wall-mounted and ceiling-mounted.

Most modern axial fans are characterized by low power consumption and reduced noise levels, unlike previous generation models. They can work for a long time without stopping, are easy to clean, and have an attractive design. For these devices to be effective, the length of the air duct should not exceed 4 m. The same applies to the area of ​​\u200b\u200bthe bathroom - the smaller the room, the more efficient the hood.

axial exhaust fan

Duct fans

For bathrooms of a large area, ducted or centrifugal fans are best suited. Their design differs markedly from axial devices: inside the cylindrical body there is a drum with many narrow curved blades. With the help of centrifugal force generated by the blades during rotation, the air is drawn inward and directed to the ventilation duct.

Such fans work effectively with air ducts with a length of 4 meters or more, they are installed both on the ceiling and on the wall (depending on the modification). The extraction can be carried out continuously, but usually the device is connected to a switch in the bathroom or to a humidistat. This saves energy and extends the life of the fan. Many models are designed for concealed installation and are relatively quiet, so that they are almost invisible in the bathroom.

duct exhaust fan

Advantages and disadvantages

If you still doubt the advisability of installing such fans in the bathroom, it would be useful to familiarize yourself with the advantages of exhaust devices:

• condensation will no longer accumulate on walls and other surfaces, dampness will leave the room;
• installation will not require much effort and time, even a beginner can cope with it;
• modern models of fans are very compact, so they are suitable for even the smallest bathrooms;
• thanks to modern design and discreet design, exhaust fans will harmoniously fit into any style of interior;
• most models are equipped with a protective mesh, which eliminates the ingress of insects and small objects inside the case, which means that you will have to clean the device less often;
• the front panel can be easily removed for fan maintenance - cleaning the blades and lubricating the motor.

As for the shortcomings, there are very few of them:

• fans cannot work absolutely silently, and their buzz can annoy some consumers;
• electricity consumption increases, albeit slightly;
• The device requires regular cleaning and lubrication to function properly.

Also, a lot depends on the correct installation: if the fan is not positioned correctly, the air circulation is disturbed, and there is nothing to say about a high-quality hood.

Exhaust fan selection rules

So, if the decision to buy a fan is made, you need to choose the right model so as not to be disappointed later. You need to choose at once according to several parameters - performance, safety, noise level and, of course, in terms of quality-price ratio.

Performance

This criterion is the main one, because the efficiency of air exchange depends on it. Here it is important to choose the right power of the device relative to the area, since the same fan gives a different result in a small and large bathroom. According to building codes, the air exchange rate for a bathroom is 6-8 units, that is, in an hour the entire volume of air in the room should change from 6 to 8 times. As a rule, if no more than three people use the bathroom, they choose a multiplicity of 6, if more than three - a multiplicity of 8. The calculations are not difficult to perform: you need to find the volume of the room and multiply it by the air exchange rate.

For example: there is a bathroom with dimensions of 1.9x1.7 m and a height of 2.65 m, 3 people use it. We calculate the volume of the room - 1.9x1.7x2.65 \u003d 8.56 m. Round up to 9 and multiply by the multiplicity - 9x6 \u003d 54 m3.

It turns out that for such a bathroom, a device with a capacity of 54 m3 / h will be the best choice. Of course, it is not always possible to find a model that best matches the calculated parameters, so you can choose a fan with a small margin of performance.

Safety

For bathrooms and toilets, fans are produced with additional protection of electrical contacts from moisture, which must be indicated in the instructions and on the packaging. If you put an ordinary model, and water gets into it, this can cause a short circuit and even a fire, so you can’t risk it in any case.

Now you can find low-voltage extractors specifically designed for bathrooms and saunas. They have moisture and thermal protection, and can work effectively at 100% humidity and high temperatures. True, the cost of such fans is higher, and they cannot be connected to a conventional electrical network, which entails additional costs, but the safety of the residents is worth it.

Noise level

The noise produced by the fan should not exceed 30 dB, otherwise it will irritate the household. If you plan to turn on the fan at night, choose a model with a noise level of up to 25 dB. The lower this indicator, the more comfortable you will be in the bathroom with the hood turned on. This is especially true for those whose fan runs continuously.

As for the quality of fans, it is better to focus on well-known trade brands, whose products have already been tested by time. For example, household fans have a lot of positive reviews. trademark Soler & Palau (Spain), VENTS (Ukraine), Electrolux (Sweden).

These companies value their reputation, so their products are of high build quality and durability. The main thing is to buy fans in specialized stores, where they can present an appropriate certificate for the product and issue a warranty card. So you avoid the risk of buying a cheap fake, not branded equipment.

Additional Fan Features

A photo	Name of add. functions
	Timer
	Hydrostat or bathroom fan with humidity sensor
	Motion Sensor
	Constant ventilation
	Clock on the front of the fan
	check valve

How to install an exhaust fan yourself

Exhaust fans - photo

The process of installing the fan itself takes a minimum of time, but before that you need to properly prepare everything, think over the connection method, and, if necessary, lay a cable for power supply. All wiring should be located in strobes and hidden under the cladding to eliminate the slightest risk of contact with water. If the fan is ceiling, and the ceiling itself is suspended, then there is no need for strobes: the wiring is attached directly to the ceiling, fixed with special clamps. Of course, all wires must be in the corrugation.

To connect the fan, a three-core VVG cable is usually used - it allows you to supply zero, ground and phase to the device from the switch.

Moreover, the switch can be either single-key or two-key. The second option is preferable: you can turn the fan on and off regardless of the light.

If you do not have experience with electrical wiring, you should invite a professional electrician for this, because any mistake or negligence can lead to serious consequences. After the cable is laid, you can proceed with the installation of the fan.

For work you will need:

• Bulgarian;
• drill with drills for tiles and concrete;
• pencil;
• connecting terminals;
• regular and indicator screwdrivers.

Step 1. Unpack the fan, check its integrity and completeness. Usually fasteners are included, but if they are missing, you should buy self-tapping screws and plastic dowels in advance.

Step 2 Prepare the vent. If it was covered with a cladding, you need to attach the fan housing to the tile and carefully circle it with a pencil. After that, a cut is made along the contour with the help of a grinder. If the hole was open, you need to clean it of dust and construction debris, make sure that the fan enters well and does not cling to the edges.

Step 3 Remove the front panel and the inner cover of the fan from the device, put them aside. Now you need to mark up the fasteners. To do this, the fan is inserted into the hole until it stops, aligned, guided by the seams of the tile or the building level, and points are marked with a pencil through the holes in the case.

If the fan has a rope-switch, you need to dismantle it

Step 4. A drill with a victorious tip is inserted into the drill and carefully, at low speeds, drill through the tile at the marked points. Then they change the drill and, in the hammer drill mode, they go deep into the concrete. The finished holes are cleaned of dust and plastic dowels are inserted into them.

Step 5 Once again try on the fan to the hole and determine where the cable will pass. In this place, a semicircular groove is cut out with a grinder, corresponding in size to the cross section of the wire. A hole for the wire is also drilled on the body of the device.

Step 6 The fan is brought to the wall, threaded electrical wire through a hole in the case, then lead it into the groove and insert the fan. Fix it to the wall with self-tapping screws using a screwdriver or screwdriver.

Screw for fixing the fan

Advice. In order not to drill the wall, you can fix the fan with silicone sealant. The device weighs a little, moreover, it is partially held by the wall, so such a mount is quite enough. The main thing is that the sealant is of high quality and waterproof.

Sealing wiring

Step 8 Close the fan with a lid, which is screwed in the center with one screw, and then turn on the power and check the operation of the device. Now it remains only to insert the protective grid and secure the front panel. Many masters prefer to do without a mesh, as it quickly becomes dirty and stops passing air. To avoid this, you have to regularly remove it and rinse with water.

Fixing the decorative cover with a bolt

This completes the installation of the fan. In the process of use, you will have to clean the ventilation grille and blades from accumulated dust from time to time. If, after cleaning, the hood works poorly, this indicates that the exhaust channel is clogged. AT apartment buildings It is impossible to fix such a problem on your own and you need to call a specialist. But in a private dwelling, it is much easier to clean the ventilation system, so many homeowners do it on their own.

Video - Exhaust fan in the bathroom

Video - Installing an exhaust fan

Bathroom fans are now essential in every home. Due to the ubiquitous installation plastic windows, there was a need for forced ventilation, especially in the bathroom! There is always high humidity, this not only brings discomfort, but can also cause mold and fungus to appear on the walls.

How to choose a bathroom fan

Before buying a bathroom fan, you need to clarify the initial data of the room where the installation will be carried out:

1. Installation location - in the wall or on the ceiling
2. Connection to a duct system or installation in a ventilation shaft
3. Permissible hole diameter

• Performance
• Reliability electrical connection
• Engine quality and build
• Material safety
• Noise level

bathroom fan price

Price for bathroom fans directly depends on the quality of the materials and components used. A high-quality fan cannot be cheap! A powerful ball bearing motor, engine noise reduction technologies, environmentally friendly plastic, reliable assembly - all this cannot cost less than 2000 rubles. Therefore, approach carefully and meticulously when choosing a fan for the bathroom. This device should serve you for years to come!

Overhead fans

Surface-mounted bathroom fans- one of the most common types of fans for domestic use. During installation, this fan is superimposed on a wall or ceiling, and inner part, branch pipe, goes into the ventilation duct. It was this method of installation that became fundamental in the name of the type of this equipment.

The main function of overhead fans is to remove exhausted and humid air from the room. Often they are installed in bathrooms, toilets, kitchens, laundries and other small and poorly ventilated places. Good indoor ventilation is important not only to remove the discomfort of excessive moisture in the air, but also to prevent mold and mildew, which is harmful to human health. Overhead fans will provide you with comfortable, fresh air!

Overhead fans can be divided into:

• Axial
• Centrifugal

The latter are quite rare, more expensive, but at the same time they have many times higher performance. The high performance of centrifugal overhead fans is achieved by using a special centrifugal impeller with forward curved blades.

Price overhead fan

The price of overhead fans depends on many factors:

• Performance
• Pipe diameter
• The presence of a check valve
• Availability additional features: timer, humidity sensor, motion sensor, CO2 sensor, pull switch, etc.
• Color and design
• Low noise
• Eco-friendly plastic
• Electrical connection safety
• Engine type: on plain bushings or ball bearings
• Country of Origin
• Control system

Thus, the choice of overhead fans seems to be quite large. In order not to get bogged down in a painful choice, it is recommended to determine the parameters that are important to you in advance. Remember that performance, quietness, reliability of the motor, electrical connection and environmental friendliness of materials are the main characteristics for a long and safe life of a surface-mounted fan.

If you need help or just want to know the cost of a surface-mounted fan, do not hesitate to contact Blagovest specialists, we are always happy to advise you!

As a rule, windows are not provided in bathrooms, and the ventilation system remains the only way of air exchange. It can be natural or forced. In the second case, a bathroom fan is installed in the ventilation duct.

The role of ventilation in Everyday life It is difficult to overestimate a person, it is she who provides a healthy microclimate in the room. If we talk about the bathroom, then here, indoors, in conditions of high humidity, the lack of air exchange leads to delamination of furniture, swelling of doors, corrosion of even painted metal, the formation of mold, fungus and the reproduction of insects.

Fan in the bathroom: a luxury or a necessity.

As you know, in any standard project At home, natural ventilation is necessarily provided in the bathroom, kitchen and toilet. It includes ventilation ducts, at the entrances of which there are decorative lattices. The movement of air in the system is carried out due to the difference in atmospheric pressure outside and inside the room. The question is whether it works fully, if at all, preserved after repair.

Efficiency natural ventilation depends on many factors.

Air temperature. For example, in summer, due to high temperatures, air exchange is minimal.
Air supply to the house. When in construction were used mainly wooden windows with many slots, this issue was not relevant. But today, with the advent of plastic windows, air practically does not penetrate into the room and this significantly reduces the efficiency of the system.
Infestation. Not many monitor the cleanliness of ventilation. Over the years, dirt, dust, cobwebs, insects accumulate in it, and this, in turn, prevents the movement of air masses.

The bathroom is an enclosed space high humidity, here the air exchange should be especially good. And the only way to make it effective, regardless of external factors- install a fan. Forced ventilation in the bathroom will provide the necessary amount of fresh air regardless of weather conditions and will allow, if necessary, to carry out mandatory ventilation. But keep in mind that household fans for bathrooms, after installation, close the vent channel and completely prevent natural air exchange.

Solving the problem of air exchange in this way has a number of other disadvantages.
Any device operates with a certain level of noise, which can cause discomfort. A silent bathroom fan would be a good solution, but silence will cost a little more.
The performance of a domestic fan is usually higher than the norm. This means that the operation of the device must be controlled. Especially in the cold season, when continuous ventilation will certainly entail extra heat costs.
Additional, albeit small, energy costs.

Forced ventilation in the bathroom and toilet is a quick and easy way to deal with unpleasant odors, excess moisture and its consequences.

A wide variety of models are presented on the construction market. exhaust systems, but before making a choice of a bathroom fan, you need to decide on some technical and functional parameters of these devices.

How to choose a fan

When choosing a fan, it is necessary to take into account a number of technical characteristics: performance, safety, noise level. These indicators, without fail, must be indicated in the device passport.

An important point: When the fan is turned off, it closes almost the entire opening of the ventilation channel with its housing, and this is bad! Thus, your bathroom is practically not ventilated. The way out is to install an additional or double ventilation grille.

Double grids - the best choice for the bathroom and kitchen

Fan performance is the volume of air that will be moved in a certain period of time. For any room, this indicator is calculated by a simple formula: the volume of the room is multiplied by the air exchange rate, this indicator is set by building codes. For bathrooms used by 1-3 people - 6, more than 3 people - 8. The resulting figure indicates at what fan performance all the air in the room will be replaced with fresh air within an hour. The performance of household fans for toilets and bathrooms is usually 90-100 m3/h.
Noise level. Fan operation is always accompanied by mechanical and aerodynamic noise, which should not exceed 35-40 dB. If the inner surface of the duct is lined with soundproofing material or a silencer is installed in the ventilation system, the figure can be reduced. You can also purchase a silent fan for the bathroom, which, however, is a little more expensive.

Silent bathroom fans

Safety. Like any other electrical appliance, the fan is prone to short circuits, especially in the bathroom, where the level of moisture in the air is quite high, so it is better to opt for devices with a high level of splash protection.

Forced ventilation in the toilet, if it is not combined with a bathroom, is a purely aesthetic issue. For small room the fan with the lowest performance will suffice. A non-return valve will not be superfluous for channel system ventilation. A high noise level this case some consider it not at all superfluous, although if desired, you can install a silent energy-saving fan for the bathroom.

Additional functions.

A modern bathroom exhaust fan, in addition to the main mechanism, is often equipped with additional options that turn it into a convenient multifunctional device.
Power control is important in order to save energy. Can be manual or automatic.
Humidity sensor. The fan turns on automatically when the humidity level in the room is high. It should be noted that the humidity sensor is only additional option, it should not be the only way to turn the fan on and off.
Motion Sensor. An interesting, but not always necessary function in domestic conditions. The device turns on automatically, the set time works.
The timer is a very useful solution. After the set time has elapsed, the bathroom exhaust fan switches off automatically.
The "constant ventilation" mode means that the fan operates at minimum speed, and when humidity rises, it automatically increases performance. This energy saving mode is often used to dry clothes in the bathroom.
A check valve for ventilation is recommended to be installed in duct-type ventilation, as well as for exhaust openings that go directly out of the room. The damper prevents the intake of air from the street or from another room.

Check valve for ventilation

Usually, fans for toilets and bathrooms are installed in place of the ventilation grill, but before proceeding with the installation, make sure that the diameter of the opening of the ventilation duct and the fan housing matches, and the draft is good. They check it with a lit match, if the flame does not deviate to the outlet, there is no draft, the channel needs to be cleaned.

Duct installation

It is better to fix the fan in the ventilation duct using a special polymer adhesive. The front panel is removed and temporarily removed. Glue is applied around the perimeter of the fan cover. The adhesive surfaces are connected for a few seconds. Then they disconnect and give the glue a little “grab”. After a minute, press the fan tightly against the wall. Also, domestic fans can be fixed to the wall with dowels, if there are holes on the panel for them.

Fan installation process

Power connection

Before installing a fan in the bathroom, it is necessary to carry out the wiring, determine the method of turning the device on and off, and designate the installation location for the switches. Only three-core cables are used to connect electrical appliances. Usually the wiring is hidden under the finishing materials. But sometimes, the fan is installed after repair. In this case, the wiring can be hidden under a box or a decorative seam between the tiles. To do this, the seam is carefully cleaned, the wires are laid in it and overwritten again. The box can be easily attached to the wall with polymer glue.

Fan installation process

Connecting the fan to the electrical network in the bathroom can be done in several ways.
to a one-button switch.
The method involves the simultaneous switching on of the fan and lighting. From junction box zero and ground is connected directly. The phase is taken from the same spin, but after the switch. The scheme is simple, but not very convenient, since after the light is turned off, the fan will not remove unpleasant odors.
To a two-way switch.
A more acceptable option for use in the bathroom. One switch key is responsible for lighting the other, respectively, for the exhaust fan for the bathroom. A phase comes to the switch from the junction box, which is switched through two contacts to the lamp and to the fan. Zero and ground come directly from the junction box to the fan and lamp.
To the lamp.
When forced ventilation done in the bathroom without further renovation, the device can be connected directly to the lamp. A box is pulled from the lamp to the ventilation duct. The lamp is removed. All wires are fixed on one terminal box. The other end of the wire is connected to the fan contacts. Screw on the protective cover. Before installing a decorative grille, check the operation of the systems.

August 3, 2016
Specialization: master in the construction of plasterboard structures, finishing works oh and stacking floor coverings. Installation of door and window blocks, facade finishing, installation of electrics, plumbing and heating - I can give detailed advice on all types of work.

An exhaust fan for a toilet is an indispensable element in our time, because it maintains optimal humidity in the room and removes unpleasant odors. But in order for the system to work effectively, you need, firstly, to select equipment with optimal parameters, and secondly, to install it correctly. It is these aspects that I will discuss in this review.

Features of selection and installation

We will figure out how to choose a high-quality and reliable product and how to connect it in order to ensure maximum safety of operation and work efficiency. Each factor is very important, so read this section carefully.

What to look for when buying

If you are doing all the work yourself, you will have to deal with design features equipment to choose the best option. I do not advise relying on the advice of sellers for the following reasons: often their knowledge is limited to the assortment of the store, often they try to sell stale goods or options that are unreasonably expensive.

First of all, I will talk about the types of construction, there are only two of them:

• Axial fans- the most common type of product in our time, inside the housing on bearings there is a working unit, which, due to the rotation of the blades, removes air from the room. The main plus is the low price, the main minus is the decrease in performance in proportion to the resistance, that is, if you live on the lower floors of a high-rise building, then the actual efficiency will be no more than 10% of the declared one;

• Centrifugal Options differ in design, in them, instead of a conventional screw, air is removed using a wheel with blades. The actual performance is 2-3 times lower than that of the first type, but the power loss due to resistance is minimal. Such a fan will be effective even on the first floor of a twelve-story building, so if you need equipment for an apartment, then I advise everyone to pay attention to this group of products.

The question of which fan to install is best decided during the repair work in the toilet, as subsequently the work will become more complicated due to the fact that it is impossible to spoil. It is important to initially decide which installation option is more convenient in your case, there are two solutions:

• Overhead fan - a well-known option for everyone. In it, the mechanical part is hidden in the ventilation shaft, and on the outside there is an overlay with a decorative grille. The advantage of this solution is that the installation process is quite simple and takes a little time, and the disadvantage is that during operation, in any case, noise will be heard, in expensive models it is less, in cheap models it is more;
• ducted fan - a more rational solution in my opinion. Although it is somewhat more difficult to install it, due to its location it makes much less noise. In addition, such options have higher performance and are themselves more reliable and durable (I made this conclusion from personal observations).

If you live in an apartment, you know firsthand that odors from the lower floors can penetrate into your room through a common ventilation duct. To avoid this, I advise you to buy a fan with a non-return valve for a toilet or bathroom.

Its main feature is as follows: when the system is not working, the entrance to the cavity is closed by a thin curtain, and when it is turned on, the air flow bends it and freely goes into the ventilation duct.

If you have decided on the type of construction, then you can go for the desired option. The main thing is not to make a mistake when choosing and buy a high-quality and reliable option. I will tell you what factors you should pay attention to in order to find the best solution:

Duct diameter	You must measure this parameter in advance in order to look for exactly what you need. Naturally, the size of the fan or its part recessed into the shaft may be slightly smaller, but if it turns out to be larger, then you will either have to change the product or carry out laborious work to expand the cavity, which is highly undesirable
Performance	It is believed that for effective work even under the most difficult operating conditions, the fan must pump about 10 room volumes per hour. Since the dimensions of the toilet are usually small, it makes no sense to purchase models that are too powerful.
Production material	Most often for casting the case are used polymer materials. It is better if it is ABS plastic, it perfectly resists impacts, does not turn yellow over time and retains strength over a long period of time. Carefully inspect the surface - quality products will never have flaws, untidy seams and dirty stains
Noise level	The maximum value that can be used in a toilet is 40 dB, but these days most products are quiet. The very same quality options and virtually silent
Voltage	I recommend using only 12 volt equipment. Why? It's simple: it is absolutely safe when used in a humid environment and the level of energy consumption will be minimal.

The fan can be mounted on bushings or bearings. The second option is much more preferable, it is both more reliable and more durable.

Overview of the main manufacturers

As for the products on the market, the buyer may have problems choosing due to the huge range of products. I will talk about those options that have proven themselves with positive side and enjoy well-deserved popularity among buyers.

I'll start with the Vents brand, which offers a fairly wide range of modifications, the main product groups are as follows:

• Axial fans are distinguished by a diverse design and good technical performance, as for the price, depending on the brand, the product will cost you from 650 to 2800 rubles. Silent models deserve special attention, their cost is about 1600-2000 rubles;

The Vents 100 Quiet model is low-noise and energy-saving, with a power of only 7.5 W it has a capacity of 97 cubic meters per hour

• Centrifugal duct options are suitable for the lower floors of high-rise buildings and places where the resistance in the ventilation system is high. The cost of the product, depending on the power, can range from 2900 to 5000 rubles.

The products of the Domovent company are distinguished by a democratic price and good performance, I would divide all products into two groups:

• Axial fans have a rather attractive design, while their cost, depending on the model, ranges from 650 to 1000 rubles. At the same time, the quality meets all standards, such structures can be used in rooms of any type;
• Duct fans from this manufacturer will cost you from 380 to 650 rubles. This is one of the most budget options, but at the same time, the performance of the structure will be even higher than that of axial models due to the fact that the system is located in the ventilation shaft.

The Polish company "Equation" offers overhead fans with a stylish design and low noise level. Appearance products meet the highest standards, the cost ranges from 1000 to 3000 rubles.

The Spanish brand "SATA" offers high-quality and reliable equipment that has an attractive appearance and good performance characteristics. Axial modifications will cost you from 1600 to 7000, and channel modifications will cost an average of 4 to 7 thousand rubles.

Another Spanish brand that is very popular in our country is Silent, the products of this company are different the highest quality and reliability, but the price is much higher than that of usual options. So overhead models will cost you from 2 to 7 thousand, and channel modifications can cost from 6 to 50 thousand.

The Ballu company produces very high quality and reliable, but at the same time inexpensive fans. The cost on average ranges from 1200 to 2600 rubles. From myself I want to note that this option is one of the best in terms of price-quality ratio.

"Ballu" is a good solution for any bathroom

Another company that cannot be ignored is Electrolux. This Swedish manufacturer produces a wide range of high-quality household appliances, including fans. Their cost, depending on the brand and capacity, ranges from 1600 to 8000 rubles.

Installation

Now let's figure out how to install a fan in the toilet, the work is not difficult, however, the installation instructions must be followed very carefully, because the work is related to electrical equipment. First you need to decide on the type of connection, there are the following options:

• If the design provides for a timer, then the system is connected according to the scheme below. The power for the timer is supplied from the luminaire so that the system turns on after a certain time has elapsed or at the same time as the light is turned on. This option is convenient to use, but sometimes you need to turn off the fan and turn it on, which automatic system difficult;

• You can make the same system, but implement the ability to turn on with a switch. It must be installed in the toilet within human reach. This solution is convenient due to the fact that you can turn the system on and off yourself, but if you do not touch the switch, it will work without your intervention;
• The simplest, but also the most reliable option is to turn the equipment on and off yourself. Again, control should be carried out directly from the toilet, which is important to provide for when carrying out finishing work and install a switch in advance;

• An improved view of the above equipment is a design in which there is a time relay. That is, switching on is done manually, and switching off automatically after a certain period of time. This is very convenient, because as practice shows, many people forget to turn off the fan, and it can work for almost a day;

There are other options, but it makes no sense to describe them separately, because they are connected in the same way, it’s just that there are additional elements in the design: a humidity sensor, a temperature sensor, a motion sensor. In the toilet, it is advisable to use only the last option, the first ones are basically useless.

Do-it-yourself installation includes several main steps:

• First of all, you need to de-energize the network. The entire system or a separate part of it, which is responsible for the toilet, is simply turned off. Do not forget to check if the electricity is turned off, otherwise if you mix something up, the result will not be the most pleasant;
• Next, you need to take care of the lighting of the workspace. Most often, there are no windows in the toilet, and when the light is turned off, you are unlikely to be able to work without a flashlight. Many people forget about this aspect and as a result have to work in the dark or urgently look for a flashlight from their neighbors or in their own pantry;
• Before you install an exhaust fan, you need to bring the power supply to it. The ideal option is from the junction box, where you can make a high-quality connection and lay a cable to the ventilation duct. If the finish is done, then there is simply no other way out but to connect to the light bulb, you need to be powered from, the wire is most often laid along the ceiling finish (if you have plaster, you will have to install a cable channel);

• If the system will start working when the light is turned on, then you need to lead the circuit through the light bulb, a detailed diagram is above;
• If installation is carried out in a mine, then it is important to position the structure as tightly and securely as possible. If you do not want to carry out this laborious process, then the best solution would be to bring the pipe outside, a fan is built into it, and an air intake is placed at the end;

• If you have an option with a switch, then do not forget to wire it to it. Although in this case I would advise to implement a connection with a cord, a chain hangs in the overhead design, by pulling on which you turn on the system. This design is much easier to connect, because you just need to connect the fan to the network, and you don’t need to run the cable through a switch or light bulb;

Leave a spare wire so that if necessary you can pull the fan outside for inspection and maintenance without damaging the connections.

• After you have connected the structure in one of the ways, you need to check the system performance. To do this, the electricity supply is turned on and you test the fan, if everything functions as it should, then work can continue. If the design does not work at all or does not work as it should, then a search is made for the problem, it may be an incorrect connection or poor contact in any connection;
• As for the fastening of the element, there can be two options. If the body is one-piece, then liquid nails are applied to the back of the frame, after which the structure is put in place and pressed tightly. If the design has a fixing frame in which the fan snaps into place, then first you need to glue it and then just put the main unit in place.

Conclusion

Always try to choose the best option– silent with check valve and timer. You should not save on quality and comfort, it is better to purchase a more reliable option. Of course, correct installation no less important, so watch the video in this article, it shows the process clearly, if you don’t understand something, ask questions in the comments.

August 3, 2016

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Increased humidity in the bathroom has long been no secret. In order for the room to have clean and fresh air, you need to provide good ventilation. People try to deal with high humidity in a variety of ways. However, the time has passed when you need to open the doors to the room after taking a shower and clean the water from the floor. It's time to move on to drastic measures - buying a fan in the bathroom.

The Importance of Bathroom Ventilation

Ventilation in the bathroom is important for people's health. Typical bathrooms have a small area. Therefore, when taking a bath or shower, the room quickly fills with steam. Dampness settles on the ceiling of the room and walls, because of this, the finish of the bathroom deteriorates. Now think, do you need a fan in the bathroom?

Water splashes, condensate and vapors can lead to unwanted mold and mildew growth, resulting in bad smell, the appearance of harmful small insects and their harmful secretions. Removing odors and moist air is essential for your comfort and to reduce the risk of allergies and respiratory problems.

As a rule, there is no window in the bathroom. And the only way to get fresh air into the bathroom is ventilation systems. When building a house, builders without fail plan natural ventilation channels. The efficiency of the ventilation system depends on the direction and location of the air flows.

Often, natural ventilation systems do not cope with their task. To check whether the natural ventilation system in the bathroom is working effectively, it is enough to conduct a small, simple test. Take a piece of paper and place it on the grill. It will stick to the grate when the system is working properly - it will be held by the air flow.

If the ventilation is not working well, the sheet will not be held. True, it should be remembered that a normally working system also demonstrates low performance, since the principle of its operation is based on the temperature difference in the bathroom and on the street. In the summer, when it is hot outside, ventilation almost does not work.

Also, the ventilation ducts become clogged over time, and the entire system loses efficiency. Remember, if condensation accumulates on the surface of walls, plumbing and furniture in the bathroom in your house, mirrors fog up in the bathroom and an unpleasant smell is constantly present in the toilet, you should install an exhaust fan in the bathroom.

Types of exhaust fans

When buying a fan for a bathroom, it is worth reading that structurally such devices are divided into channel and axial, radiator and roof, which is determined by the peculiarities of their application.

Axial fans

Axial bathroom exhaust fans are a wheel with cantilever blades, which is located in a cylindrical housing. The impeller is usually mounted on the axis of the electric motor. When the wheel rotates, the air is captured by the blades and moves in the axial direction. The movement of air mass is practically absent in the radial direction.

A collector is installed at the entrance to the bathroom hood to improve the aerodynamic performance of the fan. Axial models show a sufficiently higher efficiency of work compared to other devices - a capacity of more than 100 cubic meters per hour, but they have low pressure characteristics. You can install them directly into the wall.

Similar option exhaust fans for the bathroom is quite common due to ease of installation. Mount wall fans in the openings of the ventilation shaft. In principle, such an installation is a violation, because a violation of air circulation can occur in general ventilation. The disadvantages of wall-mounted axial fans include a higher noise level, which often reaches 30-50 dB.

Radial fans

Fans of this type are a blade wheel, which is placed in a spiral casing. When the wheel rotates, air enters the holes between the blades, follows the periphery of the blade wheel in the radial direction, it is compressed and thrown away under the influence of centrifugal force into a special spiral casing and then enters the discharge hole.

The working hollow cylinder has on the side surface of the blade, which are parallel to the axis of rotation at an equal distance. In cooling and ventilation systems, the quietest bathroom fans are used, radial type, single or double suction, with blades that are bent forward or backward.

The use of radial fans, the blades of which are directed backwards, saves 20% of electricity. Their other important advantage is the ease of transferring overloads in terms of air consumption.

Bathroom exhaust fans with forward curved blades are able to provide similar pressure and flow specifications similar to machines with backward-facing blades, with a smaller impeller diameter and low impeller speed, helping to achieve a good result, while creating less noise and taking up less space.

Centrifugal fans

Centrifugal duct-type fans have appeared quite recently (70s), but have gained great popularity due to their convenient use with considerable simplicity. Duct fans for the bathroom are used when the area of ​​​​the room is more than 15 square meters.

The devices themselves are quite powerful, but the noise level is rated as low. Noiseless duct-type bathroom exhaust fans are designed to be placed in the flow path of the ventilation system. They come in rectangular or round sections. Typically, a duct fan is installed under the ceiling and hidden behind plasterboard panels.

It is advisable to choose semi-rigid or rigid ducts, because their design is considered more reliable than flexible ducts - this provides more long term services. The centrifugal fan can be mounted in the middle of the duct or in front of the air inlet.

Although the latter option is not very convenient, as it requires the installation of an anemostat, which prevents condensate from entering the ventilation system. However, in the first situation there are also disadvantages - due to the aerodynamic resistance of the air ducts, you need to install a more powerful fan.

Roof fans

Roof hoods are installed on the roofs of residential buildings. Roof fan units consist of a fan, an electric motor, anti-vibration pads, as well as automatic control devices, which are enclosed in one housing. These devices use axial multi-blade or radial devices with single- or double-sided suction blades.

Choosing a bathroom hood

When choosing a fan for the bathroom, you need to keep in mind some parameters and technical characteristics, such as air exchange and performance, noise level and safety in relation to a moisture-saturated environment, as well as the functionality of the devices and the price-quality ratio.

Performance

To calculate the required fan performance for your bathroom, you will need the following information: the volume of the room and the frequency of air exchange - the number of air changes per hour. The product of these two indicators will be the fan performance.

You can calculate the fan power using such calculations. Calculate the volume of the room by multiplying the length of the room by its width and height, and rounding up. To get the performance, multiply the volume of the room by a number that shows how many times the air must change to fresh air in one hour.

The frequency of air exchange always depends on the type of room and is specified in building codes.
This number for a bathroom according to building codes is 6-8. Take 6 if 1 - 3 people use the bathroom in your house, if more than 3 - substitute or 8. The air exchange rate for the toilet will be 6-10.

After the calculations and the performance obtained, you can choose the best fan for the bathroom according to the parameters of various manufacturers that produce exhaust fans. Practice shows that it is necessary to take a fan that has slightly technical indicators slightly higher than the calculated parameters. Typically, the performance of bathroom fans is 95 - 100 m3 / h.

Noise level

Each bathroom fan is driven by an electric motor, the operation of which is always accompanied by two types of noise - mechanical and aerodynamic. The first noise is able to penetrate into the premises, while spreading through the air duct, and the second - occurs as a result of vibration of structural elements - walls protective cover exhaust fan and direct air ducts.

Noise, which is more than 35 dB, irritates the human psyche. Therefore, the fight against noise is an urgent task when choosing and installing exhaust fans for the bathroom. Thus, the indicator of the noise produced by the device should not exceed 30 dB. If you are thinking about how to buy a bathroom fan to turn on the device at night, then remember that the noise level in this case should not exceed 25 dB. Noise indicators are indicated in the passport data.

The noise level can also be reduced by installing a silencer behind the fan and lining the inner surface of the duct with sound-absorbing material. Silencers have two main designs - tubular and plate. In any case, the diameter of the air ducts should not be too small so that air “plugs” do not form due to turbulence of air flows, but at the same time it should not be excessively large, which increases the material costs of a large bathroom fan.

Security issue

Another important requirement for a bathroom hood is its protection against moisture penetration into the device. The exhaust fan is an electrical appliance and the bathroom is always humid. Contact with unprotected parts of the apparatus or water switch (and any electrical device has them) can cause a short circuit and significant consequences for the electrical wiring - like a fire. This should be considered every time the question arises, how to choose a fan for the bathroom.

To avoid this, look in stores for fans that are designed specifically for the bathroom. They are labeled accordingly. These are ordinary hoods, in which protection against water penetration is additionally made. For complete safety, bathroom exhaust fans use predominantly 24 V voltage. If a short circuit occurs in the wiring, such a low voltage will save the bather's life.

Functionality of hoods

If you still have not decided which fan is best for the bathroom, you should stop at this important point like functionality. There are two types of bathroom hoods - automatic and standard. Standard exhaust fans are ordinary axial systems with a check valve that blocks the flow of exhaust air back into the room.

Such fans work very simply: when the light is turned on, the air extract starts to work at the same time, when it is turned off, the fan stops. This is convenient, but not always practical, especially when the moisture level is very high, because such a fan will not be able to remove all moist air from the bathroom in a short time.

Automatic bathroom exhaust fans are naturally superior, but also more expensive. They are equipped with special timers for setting the device for a certain operating time. Exhaust fans with shutdown timer run after you leave for approximately 25 minutes and then turn off automatically. A fan with a humidity sensor and a timer will turn on when the humidity rises above the set limit and turn off after a time period you specify.

How to choose a fan in the bathroom if the bathroom ventilation system is associated with ventilation system kitchens? There are also bathroom hoods with non-return valves on the market. These devices will be a real find if the bathroom and kitchen ventilation systems are a single whole. Such a fan draws air from the room, preventing it from entering the kitchen.

Price-quality fan

Next, pay attention to the quality of the bathroom fan, because high technical specifications do not always guarantee long-term operation of the device. It is better to look at the offers of well-known manufacturers of bathroom fans. Positive characteristics and consumer reviews will be a signal that your choice fell on a worthy device.

Confirmation of quality is the compliance of the exhaust fan with quality standards and the availability of certificates of special commissions, warranty documents and markings, which indicate the protection class (start from the lowest value - IP 34). Remember that a bulky hood will not always be of high quality.

Today, the dimensions of bathroom fans are in most cases compact, but the devices are quite powerful. Also on the market are built-in appliances that forcibly remove moist air from the bathroom into the ventilation shafts.

A good quality bathroom fan is not always expensive. Even the most inexpensive and simple domestic device will soundly cope with its tasks for as long as 3-5 years. And you can always buy a more expensive device, especially if you are interested in the high functionality of the fan.

The bathroom is one of the most humid places in an apartment or a private house. Without a doubt, the answer to the question "How to choose a fan for the bathroom?" you already know. We will make a reservation once again that compact, but at the same time powerful models of hoods in splash-proof design are intended for wet rooms, the design of which prevents water from entering the duct channel, minimizing the risk of a short circuit. In principle, we have listed all the criteria for choosing exhaust fans in the bathroom. Now it remains to consider self-installation hoods in the bathroom.