Exhaust fan in the bathroom. How to make and install a household exhaust fan in the toilet
Ventilation in the house is as important as heating or water supply. The hood in the bathroom is an integral part of the ventilation system. This issue must be approached very carefully, there are no unimportant details. In this article, we will analyze the basics of ventilation, select the right fan for the exhaust hood in the bathroom and carry out its installation.
Types of ventilation
Why do you need ventilation in the bathroom
A competent approach to the installation of a ventilation system in the house is the key to the health and quality of life of the family.
Among the prevailing opinions, there is an erroneous idea: the hood for the bathroom is not as significant as for other rooms in the house. Most people do not even think about the importance of ventilation for the bathroom and toilet. Others suggest that the windows will be enough for optimal air exchange. Of course, these ideas are fundamentally wrong.
The hood in the bathroom solves the problem of proper air exchange, therefore, there will be no unpleasant odors in the bathroom, and the air in the room will be fresh. This is especially true for a combined bathroom.
High humidity in the bathroom creates favorable conditions for the reproduction and growth of microorganisms. A properly functioning ventilation system will help to defeat rot and mold. The hood in the bathroom helps to achieve the optimal temperature and humidity, as well as maintain the parameters at the right level.
The hood for the bathroom solves the following tasks:
creates air exchange;
maintains a microclimate.
Types of ventilation
There are two types of ventilation systems.
Natural exhaust in the bathroom is created by removing stale air through the ventilation shaft. This type of ventilation is laid down at the stage of designing and building houses. For the effective functioning of the system, fresh air must be supplied through special openings in the bathroom door.
Advice. In order to check how well the system works, you need to create a draft (open a door or window) and bring a sheet of paper to the ventilation grill - it should stick to it.
In cases where the bathroom hood does not work properly or is not efficient enough, forced ventilation in the bathroom can correct the situation.
Forced exhaust in the bathroom is created through the use of special devices - fans.
When is artificial ventilation necessary?
Artificial ventilation is necessary, with natural ventilation working properly, if you notice:
rust on pipes or metal products;
condensation on walls, windows, objects;
signs of appearance (black dots) or pronounced rot, mold.
Forced ventilation installed in the bathroom in addition to natural ventilation significantly reduces the harmful manifestations of high humidity. This favorably affects the condition and service life of household appliances installed in the room. It will allow you to keep the ceilings and walls in their original condition longer after the repair.
Fan classification
Bathroom fans are classified according to the following criteria:
- at the location of the work item: overhead or channel. Overhead fans for the bathroom are mounted at the entrance to the ventilation shaft. Their installation is simple and affordable. The main work of duct fans takes place inside the duct ducts. Duct fans for the bathroom allow you to create a full-fledged ventilation system that combines several or all rooms in the house. The creation of such a system occurs during construction.
- at the place of installation: ceiling, wall, roof. Ceiling, as a rule, these are duct fans, and wall - overhead. Roof fans are a whole complex of supply and exhaust ventilation, which is placed under the roof of the house;
- according to the principle of action: bladed, centrifugal. Bladed, in turn, are divided into axial and radial. The principle of operation of blade fans is to remove the exhaust air by rotating the blades or, in the case of a radial fan, by using blades. Centrifugal hoods for toilets and bathrooms work by creating centrifugal force inside the fan;
- by the presence of additional functions: check valve for ventilation, hygrometer, shutdown timer, motion sensor. The hygrometer allows you to automatically turn on the hood in the bathroom at a given humidity parameter. The timer sets the time for the hood to turn off. The motion sensor starts the fan when a person enters the bathroom;
- according to the method of inclusion: mechanical or automatic. Mechanical fans either have a separate on/off button or turn on with the light in the bathroom. Automatic fans turn on when the parameters are set, for example, when a person enters the room, the humidity exceeds the allowable value, the light switch is triggered.
The check valve for ventilation can be included with the fan or it can be bought separately.
The valve prevents the penetration of air back into the bathroom, which is important in the cold season. A plastic non-return valve for ventilation is necessary for a ducted duct system so that odors from the kitchen or toilet do not enter the bath.
How to choose the right fans for the toilet and bathroom
In order to choose a fan for the toilet and bathroom, you must set the desired parameters for its operation. First, it is worth calculating the required performance of the hood. To do this, the volume of the room *(multiply) by the number of air changes. For a combined bathroom and toilet, the value is 10, for a bathroom - 8. Further, if the number of people in the family is up to 3, * by 6, more than 3 - multiply by 8. It is recommended to buy bathroom fans with a performance margin, i.e. slightly more powerful than the result. Performance calculation must be made for the correct choice of fan. Otherwise, installing a weak hood will not produce the desired effect, and too powerful will lead to hypothermia of the room.
The noise figure is an important criterion when choosing a fan. During operation, the device creates two types of noise: due to moving blades or centrifugal force and due to system vibration. Noise at 35 - 40 dB begins to irritate the human nervous system. To solve this problem, a silent bathroom fan is suitable - the volume of its operation is only 20-25 dB, for comparison, this is the volume of a whisper.
Silent bathroom exhaust fan has a number of design features, due to which the noise level is reduced. First of all, this is the presence of vibration isolators and a material of greater density, due to which the desired effect is achieved. The location of the fan and its type also affect the amount of noise. For example, a silent duct-type bathroom fan installed on the ceiling will create less noise already due to the fact that its system is located inside the duct.
Advice. When choosing a fan, you should consider models designed specifically for installation in the bathroom.
They have a high level of security. The design assumes protection against moisture and accidental splashes of water. In addition, they operate at reduced voltage. This characteristic plays an important role: in the event of a short circuit, voltages up to 25 volts will not lead to electric shock.
The toilet hood is similar in design to the bathroom hood. Distinctive features are lower power and fan diameter. If the average capacity of a bathroom fan is 100 m³/h, then the toilet hood can operate with a capacity of 50 m³/h.
When buying a fan, you should consider the following characteristics:
- performance indicator;
- noise indicator;
- safety indicator.
Installing fans
Installing a hood in the bathroom, depending on the complexity of the system, can be done on its own or with the help of professional workers. Laying of channel ventilation is carried out at the construction stage.
Vane fans are the easiest to install, which is why they have become more widespread. It is enough to place the device under the grille of the ventilation system, connect it to electricity, hide the wires in an insulating box. When installing, consider the following points:
- the hood for the toilet and bathroom is installed opposite the door, at the maximum height from the floor. Holes should be made in the bathroom door or a gap of 1.5-2 cm from the floor should be left;
- installation of the hood is carried out only in a properly functioning ventilation shaft - only the grate is visible on the surface;
- when installing ventilation in a private house, air must be vented outside, and not under the roof (for example, in the attic). Otherwise, condensation forms, which stimulates the development of rot. This is especially fraught with wooden beams at home;
- a forced draft hood for the bathroom, having a ventilation check valve, is the preferred choice;
- to reduce noise, you can use silicone sealant or silent fan models;
- fastening is best done with self-tapping screws.
Options for connecting the hood in the bathroom: video
As a rule, windows are not provided in the 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 a person's daily life can hardly be overestimated, it is it that 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 typical house project, natural ventilation is necessarily provided in the bathroom, kitchen and toilet. It includes ventilation ducts, at the entrances of which there are decorative grilles. 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.
The effectiveness of 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 mainly wooden windows with many gaps were used in construction, 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 a closed room with high humidity, where the air exchange must be especially good. And the only way to make it efficient, regardless of external factors, is to 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 of exhaust systems are presented on the construction market, but before choosing a fan for the bathroom, 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 bit 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 a small room, a fan with the lowest performance will suffice. A non-return valve for a duct ventilation system will not be superfluous. And in this case, some consider a high noise level 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 is worth considering that the humidity sensor is only an 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 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 the junction box, zero and earth are 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 is done in the bathroom without further renovation, the device can be connected directly to the luminaire. 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.
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, condensation and vapors can lead to unwanted mold and mildew growth, which can lead to bad odours, harmful small insects and their noxious 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 there is always an unpleasant smell 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.
A similar version of exhaust fans for the bathroom is quite common due to the 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 blades along the lateral surface, which are located parallel to the axis of rotation at an equal distance. In cooling and ventilation systems, the quietest fans for the bathroom 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 the same pressure and flow performance as those with backward blades, with a smaller impeller diameter and low 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 to be more reliable than flexible ducts - this ensures a longer service life. 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-bladed 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 should 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 propagating along the air duct, and the second - occurs as a result of vibration of structural elements - the walls of the protective casing of the exhaust fan and the air ducts themselves.
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 appliance. The exhaust fan is an electrical appliance and the bathroom is always humid. Contact with unprotected parts of the apparatus or a 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 for fans in stores 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 dwell on such an important point as 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 bathroom fan if the bathroom ventilation system is connected to the kitchen ventilation system? 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 air 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 the independent installation of the hood in the bathroom.
Bathroom fans are now essential in every home. In connection with the widespread installation of 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:
- Installation location - in the wall or on the ceiling
- Connection to a duct system or installation in a ventilation shaft
- Permissible hole diameter
- Performance
- Reliability of the 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 the inner part, the 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 of additional functions: timer, humidity sensor, motion sensor, CO2 sensor, cord 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!
The hood to the toilet with a fan today is already considered a necessity, and not a whim of the residents. With its help, unpleasant odors are removed, and the freshness in the room is also preserved. But in order for the system to work effectively, first of all, you need to correctly select the required power, as well as install it taking into account all requirements.
Features of choice
When choosing a device, it is necessary to pay special attention to both safety during operation and efficiency. Both parameters are key.
If the installation is carried out on your own, then you need to learn well the design features of the fan for the toilet and bathroom. This will allow you to choose the perfect option for a specific room and needs.
It's important to exclude salespeople's advice from the hardware store for some reason. This is due to their narrow knowledge in the field of installation and installation of ventilation, which is limited to the assortment of the store. In addition, they often want to sell stale goods on the shelves, so they do not intend to give good advice.
Installation of an exhaust fan. How to do.
In this regard, you need to choose a fan yourself. To make the right choice, you first need to know what types of such devices are. There are 2 main types:
Mounting methods
It is important to remember that the installation of a fan in the bathroom must be carried out during repair work, otherwise the finish will be damaged. In addition, you need to decide which option will be more convenient for installation - channel or invoice.
Both the first and the second have their pros and cons:
A common problem is the spread of unpleasant odors from the lower floors of the house. To prevent this situation, it is recommended to use a hood with a valve for the toilet. It works on a simple principle. If the fan is not turned on, then a thin damper (valve) closes it. When the blades begin to spin, the air flow bends the damper and pulls the air out of the room. When you stop again, the valve closes again and prevents excess odors from entering the room.
Specifications
When the type of design is selected, you can go shopping at a specialized equipment store. It is important to choose a high-quality and reliable model.
One of the necessary technical characteristics when choosing is the diameter of the device. These details must be known prior to purchase. If the model is slightly smaller than the desired cavity width, then there is nothing to worry about. And if on the contrary - more, then you will have to do additional work to prepare the place for installation.
Performance should be enough for the full operation of the ventilation system. To be specific, then in 1 hour, the device should pump up to 8-9 volumes of the room. Due to the fact that the area of the bathroom is usually small, it makes no sense to buy fans with too much power.
Production material - plastic. Household fans for bathrooms and toilets are made from polymers. This is due to the cheapness of production. But do not think that plastic equipment will not have sufficient strength. Modern production is at a fairly high level in technical terms. The only thing worth paying attention to is the quality. Good products will not have uneven seams, surfaces, flaws, etc.
The volume of work must also be taken into account. It should be no more than 35 dB. Although today it is very rare to find such models. As a rule, most products of good manufacturers make almost no noise at all.
The fan mount can be selected from two possible options - on bearings or bushings. The bearing option is better, since the device will work much longer.
