Ventilation in the bathroom and toilet: forced ventilation, do-it-yourself installation. High-quality ventilation in the bathroom and toilet How to insulate the exhaust fan for the bathroom

There are several rooms in a private house where an exhaust hood is required. This is a kitchen, bathroom, toilet, pantry and boiler room. In this article, we will consider what requirements are imposed in a private house for ventilation in the bathroom and toilet, and we will determine the types of air exhaust schemes from these rooms.

Ventilation options for the bath and toilet of a private house

In principle, ventilation for the bathroom and toilet in a private house should be treated in the same way as any other room. True, these rooms have their own air exchange standard, which is determined by the value of 25 m³ / h, regardless of the volume of space. Moreover, if the bathroom is combined, then this figure is doubled, that is, 50 m³ / h.

In all other respects, these are ordinary rooms in which natural or forced ventilation can be arranged. Let's consider them separately.

Natural

Natural ventilation is a free flow of air that moves due to physical laws, which are based on the movement of air masses in opposite directions depending on their temperature. That is, warm rises to the ceiling, cold falls to the floor.

This is what the ventilation of the bathroom is based on. That is, a pipe is laid in the wall of the room during the construction process or a separate ventilation duct is constructed from concrete blocks, into which an insert is made in the form of a branch. Through it, the outflow of warm air through the ducts will occur. The outlet is through the roof to the street.

Of course, without replenishing the air inside the bathroom or toilet, movement is impossible, so a supply line is needed through which air will enter these rooms. Usually no special device for this is done indoors. Air inflow occurs through leaks in the design of the front door. And the air itself enters through the supply channels located in adjacent rooms. This is how natural ventilation works in the toilet and bathroom.

Forced

Forced ventilation of the toilet and bathroom is still the same ventilation stack in which the fan is installed. It can be an ordinary household exhaust device or a more complex one in the form of a channel structure, that is, a pipe with a fan installed inside.

It should be noted that this system is most often installed in private homes. In addition, it does not require special costs. And the installation of forced ventilation of this type is not very complicated. To do this, you just need to install and fix a household exhaust fan on the wall where the ventilation duct is located. It is fastened with four self-tapping screws, which will not be difficult to screw with your own hands. The main and more difficult task is to connect the fan to the outlet. The length of the supply wire may not be enough, so it is simply extended.

There is one trick to powering a fan with electric current. This device should not always work. More often it is turned on when they visit the toilet or bathroom, so they make the fan turn on synchronously with the lighting of the rooms. That is, we went into the bathroom, turned on the lighting, and the fan immediately turns on automatically. And, vice versa, with the shutdown. The circuit is simple, understanding and connecting it is a small problem.

And one more thing, which concerns the performance of the selected device. It must comply with the air exchange standards in these two rooms. In any case, the indicator should not be less than the volume of exhaust air. That is, the fan performance should not be less than 25 m³ / h for the toilet and bathroom separately, and 50 m³ / h for the bathroom.

System features

There are no serious features of the ventilation system in the bathroom and toilet. As already mentioned, this is a direct riser from the rooms through the roof to the street. More often they are combined into one riser, and a horizontal channel is introduced into the premises with an output to the wall. A fan is installed in it.

If the ventilation of a bathroom in a private house is connected to a kitchen exhaust duct, then it is better to use exhaust technology. This is when the fan is installed not on each channel inside each room, but one on the entire riser, to which all lines are connected.

What needs to be calculated and designed

Making ventilation in the bathroom and toilet is not just about installing risers with access to the street. This is an accurate calculation of the duct system, mainly regarding their diameter. For example, a round pipe with a diameter of 150 mm provides a natural air outlet of 30 m³/h. That is, separately for a bathroom or for a toilet, its installation will be sufficient. For a combined bathroom, this performance is not enough.

That is, any value of the elements of the ventilation system must comply with the air exchange standards. All calculations and projects go in cycles on this indicator.

As for the design, the only difficulty here is that the ventilation system of the toilet and bathroom is not always vertical risers. It is often necessary to install a common system with a complex wiring diagram, into which taps from two rooms cut into. This is usually done if supply and exhaust ventilation is installed in the house.

How to make ventilation in the bathroom with your own hands

To make ventilation in a private house with your own hands is, first of all, to decide where this room is located relative to other rooms. There are many options here, but the most convenient option is if their wall is external. For natural ventilation, you just need to make a hole in the wall for the air duct, install it there with an outlet to the street and connect it to a vertical riser, which you assemble with your own hands. The riser must be raised 1 m above the roof, and it will have to be insulated. If forced ventilation is done, then from the side of the room it is necessary to install a window or duct fan on the wall.

If there is no such wall near the toilet and bathroom, then you will have to run an air duct through other rooms. Usually this is done through the kitchen, combining the overall system into one. That is, from the toilet and bathroom there is a horizontal section of the air duct under the ceiling through the kitchen, to which a branch is also connected for the kitchen space. The air duct is taken out through the kitchen wall to the street. After installation, ventilation can be decorated using boxes made of plastic, wood, drywall.

With exhaust fan

If a forced exhaust ventilation scheme is made, then the fan is installed outside the common line. If natural, then the air duct is brought out into the street above the roof ridge.

Here it is important to choose the right type of fan installation. For obvious reasons, this cannot be an overhead design. Here, either a channel view, or a radial, or a roof view is suitable. The easiest in terms of installation is a duct fan. It is simply inserted into the wall, and an air duct from a horizontal section that has passed through the kitchen is already attached to it, on the other side of a small riser. Although here it is better to draw a conclusion above the roof so that unpleasant odors do not seep back into the house.

Mounting air ducts is simple, because they are assembled either according to the principle of a socket system (one to one), or using special adapters for clamps or sealant. The duct fan is simply inserted into the wall without being attached to anything. The only thing to do is foam the space between the wall and the pipe.

With inlet valve

The supply valve is a pipe in the wall, closed on the outside with a mesh, and with an internal filter. It turns out that the air simply passes through the pipe, getting into the bathroom or toilet room in a private house. Not a bad option, but it is better to choose valves with a gap regulator and a heater inside the pipe. This option makes it possible to regulate the flow of fresh air through the wall.

It is clear that the valve itself does not solve the issue of air exchange. It is designed specifically for the direct entry of air from the street into the room. The outflow is still made through the installed riser. And the air valve itself is installed in the same way as a duct fan. That is, a through hole is drilled in the wall, where the device is inserted. And also the gap between it and the wall is filled with mounting foam. No fasteners. That is, the most difficult thing in its installation is drilling a hole.

Sophisticated ventilation systems

Separate systems of a complex type are not used in the bathroom and toilet of a private house. That is, there are no ventilation systems specifically for individual rooms. Sophisticated can be installed throughout the house with a toilet and bathroom connected to the circuit. At the same time, the design can be very complex: with filtration, noise dampers, recuperators, with the help of which the supply air is heated. In some models, manufacturers add electric or water heaters.

These are actually complex ventilation systems in terms of the scheme and quantity of equipment. But we must pay tribute that they are by far the most effective. Their design is a block in which all the above-mentioned devices are located, and a network of air ducts scattered throughout the house for both the supply and exhaust areas. Usually the unit is installed in the attic, here the scheme of ventilation pipes is assembled with entry into the rooms through the ceiling.

Such systems are difficult to assemble with your own hands. Therefore, they are installed by professionals. Although manufacturers claim that their designs are assembled on a modular basis, like a large designer.

Clean air promotes well-being and cheerfulness. Indoors, this is ensured by ventilation and ventilation. In the toilet and bathroom freshness is needed no less than in the rest of the house. There is a built-in ventilation. Let's talk in detail

her, why she is needed, about the design, types and methods of her work.

The system is necessary not only for the supply of clean air. Thanks to it, they achieve the optimal temperature, as well as the level of humidity and oxygen.
In a small room without the possibility of ventilation, stale and specific air accumulates. Toilet air freshener won't help. It hides odors, not eliminates them. In the bathroom, ventilation is necessary to combat high humidity. After taking a shower or bath without well-functioning ventilation, it will take a long time for this room to bounce back.

ventilation

Checking work

The toilet and bathroom in apartments, even with a divided wall, have one air outlet leading to the shaft. In private houses, a different ventilation system may be provided. This is especially true if it has several floors. In simple houses, the room may have a window for ventilation. In cottages, a shaft type is installed.
The function test is carried out through the technological air holes. The presence of thrust is analyzed by a lighter or a sheet of paper, which is brought to the grate. The fire should go out or turn towards the ventilated window, and the sheet should be attracted to the hole. If this does not happen, then the system is failing.

Do you know why the natural condition deteriorates sharply? There are several.

Ventilation in the bathroom and toilet

What to do?

If a problem is found, first of all, it is necessary to clean the mine. In apartment buildings, this is done by special services serving them. The brigades have special equipment for work.

But, in the apartment, the tenant can check the available area on their own. To do this, remove the grate and view the visible area, helping yourself with a flashlight. Often accumulated debris or a dead bird can be removed with a spatula or other device while in the apartment. But this must be done carefully. You can not highlight the ventilation with a lighter. If there is dry garbage there, then a flame will instantly flare up and spread to all floors.

bathroom door

Sometimes it is enough to depressurize the door to the toilet or bathroom to increase air circulation. Of course, if it is a matter of a high threshold, you should not lose it, since in the event of a water spill, it will protect the rest of the dwelling from the flood. It is better to provide special slots in the door itself. This is achieved by trimming or installing gratings.

It must be borne in mind that by installing airtight windows in the house and insulating the walls, the owners deprive themselves of the natural circulation in the house. Clean air can only get in if the vents are open. But there is another option. On sale there is a so-called supply valve. Some models cut directly into the window structure at the top of the frame. Then they are ordered when installing windows.
However, when the windows are already installed, they acquire a valve on the wall. For installation, it must be drilled through. Usually the valves are placed next to the windows and covered with curtains. Another good place is behind the batteries. Then the air warms up, getting into the room.

Ventilation in the restroom

System types

Ventilation is divided into two types:

The latter, in turn, happens:

exhaust;
supply;
supply and exhaust.

For the house, the window in the bathroom will not only establish natural air circulation, but also become a source of lighting. The same purpose is served by a window between the kitchen and the bathroom. It was invented to save electricity. It was believed that during the day it was not necessary to turn on the light bulb, since natural light was enough.

The cheapest way to solve the problem of air exchange in the house is a ventilation hole that goes directly to the street. In this case, additional blinds for adjustment can be provided, a fan is installed to implement forced ventilation.

Previously, natural air exchange was often carried out due to drafts. This was due to the use of not the highest quality materials, for example, a door that did not close tightly, or the use of old window frames. The use of new technologies excluded drafts from the premises. Now they appear only if the windows are opened on purpose.

Valves for natural ventilation

In case of disruption of the work of natural air exchange, a forced view will save the situation. If there is a mine providing for natural ventilation, then it is being redone. In multi-storey buildings, the use of such is prohibited.. After all, because of this, the air exchange among the neighbors will be disturbed. However, many do not pay attention to prohibitions, and install forced ventilation in apartments.
In private houses and cottages, a fan can be installed in mines. But, it is better to do this during construction work.

The most commonly used overhead fan. Depending on the model, it has the following features:

It is convenient to use a channel device in the house installed in the attic in the ventilation pipe. It serves both as a toilet and a bathroom. The main thing is to correctly calculate the power, taking into account the number of people living in the house and square meters.

Forced ventilation in the bathroom

Which forced ventilation system to choose?

The most common way to establish air circulation is to install a hood. But in a large family this is not enough. Then, instead of the hood, a supply is used. In this case, the air enters the room, and does not leave it. The old air is replaced by new air, providing air exchange.

But one inflow is rarely used. Usually, for optimal ventilation, an integrated system is provided, where the hood works together with the supply. The exhaust opening is installed at the top, and the supply - at the bottom. Relative to each other, the arrangement should be diagonal. Due to this, the air corridor will increase.

Installing forced ventilation at home is not so difficult. Let's see how it's done.

To reduce noise, it is advisable to additionally lay a sealant between the wall and the fan.

ventilation

It happens that after installation, instead of output, air began to be sucked in from the mine. Then you will have to install another fan with a special valve that does not allow back draft.

But did you know that if the toilet and bath are separated, ventilation is also organized between them? To do this, a pipe is laid in the space behind the ceiling or two fans are installed: between the bathroom and the toilet, as well as in the exhaust vent.

Air conditioner

The most convenient, but also expensive device for providing circulation is air conditioning. A good and properly installed model maintains the desired level of humidity, saturates the air with oxygen, and also deodorizes and ionizes it, supplying it in the most comfortable mode. The device is switched on and off manually or adjusted in such a way that a certain temperature is maintained in the room. The most expensive models also include sensors for humidity and other parameters, due to which the automation determines when it needs to be turned on so that the microclimate of the house remains comfortable for residents.

Closed and outdoor loops

In apartment buildings, an outdoor cycle is always used, in which air comes from the external environment. However, in cottages and private houses, a closed cycle is often used when it is run indoors. This keeps the heat in the house and saves money on heating. To maintain cleanliness and freshness, special filters are installed.

Conclusion

This is how it works ventilation in the bathroom and toilet. Now you know how to provide clean and fresh air in these areas, and make living at home more comfortable. Follow the recommendations in the article, and let everything work out for you!

Installing a VENTS Silenta-S fan in a bathroom

In the bathroom and toilet, condensation forms more strongly than in other rooms, and unpleasant odors appear. Therefore, the arrangement of proper ventilation is essential here. A high-quality extract contributes to the normalization of the indoor microclimate, ensures its compliance with sanitary and hygienic standards and requirements.

Ventilation in the bathroom and toilet avoids the appearance of dampness and fungus. This contributes to the normal well-being of people living in the house. Finishing, plumbing, furniture, which is located in such premises, will last much longer. All work can be done independently. To do this, you need to familiarize yourself with the existing rules for creating ventilation in the toilet and bathroom.

Ventilation Requirements

Proper ventilation in the bathroom and toilet is one of the important factors that allow you to fully exploit the premises. It is as important as heating, lighting and water supply. The quality of the equipped ventilation depends on the compliance of the oxygen environment inside the dwelling with the existing requirements.

The bathroom and toilet are enclosed, poorly ventilated areas. Here there is an increased probability of reproduction of pathogenic bacteria and fungi. SNiP establishes air exchange indicators. Its intensity per hour should be 25 m³ for the bathroom. The air flow per hour for a combined bathroom should be 50 m³.

To check the operation of the hood, you need to bring a burning match to the ventilation grill. If the flame is not drawn in by the channel, then the ventilation in the bathroom and toilet is not functioning. In old-style multi-storey buildings, such a picture is observed due to clogging of the channel. If a similar problem is detected in a new house, then the system was designed incorrectly.

The best solution to the problem would be the arrangement of a new forced ventilation. Such a system has many advantages over passive exhaust. It is able to quickly solve the problem of dampness and the appearance of fungus, an unpleasant odor in such rooms.

Air exchange type

Ventilation in the bathroom and toilet, which options are offered to property owners today, can be natural and artificial. In ordinary multi-storey buildings built in the last century, the first type of system is used. From windows and doors, fresh air in this case enters the room. Then it exits through the ventilation ducts.

The movement of air masses during natural ventilation is achieved due to the pressure difference between indoors and outdoors. In modern apartments, windows and doors are characterized by high levels of tightness. This disrupts the natural circulation of air in the room. Therefore, when purchasing new plastic windows and sealed doors, it is necessary to provide for the presence of ventilation devices in them.

Forced or artificial ventilation requires special equipment. It is built into the air exchange system. There are a large number of different fans for forced ventilation. They relieve pressure inside the bathroom and toilet. Air is pulled out. This process leads to the flow of oxygen into these rooms from other rooms.

The arrangement of forced exhaust in the bathroom can solve the problem of inefficient natural ventilation. It requires more time and cost during installation. Over time, the effort spent is fully compensated. All interior items and decoration in such rooms last much longer than with a natural type of air exchange. Human health will not be threatened by various pathogenic microorganisms. Therefore, forced extraction is preferable today.

Types of ventilation

Sanitation and building codes state that forced ventilation in the bathroom and toilet is preferable. However, it should be noted that there are several other features by which such systems are distinguished.

According to the purpose, supply, exhaust and mixed ventilation are distinguished. In the first case, additional equipment provides fresh air into the room. This creates excess pressure. It forces the old air masses to leave the room through the outlet ventilation ducts.

The exhaust type of the system provides for the presence of a fan directly on the channel shaft. In some cases, a combined method is used. It assumes both types of arrangement of systems.

Ventilation also differs in design. There is a channel and channelless hood. The second option involves the movement of air masses through equipped holes in the walls between rooms. For example, it can be the ventilation of the bathroom through the toilet or vice versa. In one of these rooms there is an exit to the exhaust shaft common throughout the house. Air from the second room first enters the first room through a hole in the wall, and after that the mixed masses leave the apartment through the channel.

However, duct ventilation is more efficient. It involves bringing the exhaust shaft directly to rooms with high humidity. This ensures complete air exchange in the bathroom.

Fan type

Forced ventilation in the bathroom and toilet involves the use of additional equipment. It may vary in installation method and design. Fans provide sufficient air exchange rate for combined and separate bathrooms.

According to the installation method, equipment of radial and channel type is distinguished. In the first case, the fan is mounted at the shaft outlet. Its body has an aesthetic body. Channel varieties are installed directly in the mine itself.

According to the type of design, a diametrical, axial, centrifugal and centrifugal-axial fan is distinguished. In the first version, the product has a drum-type impeller. This design has a low efficiency. An axial fan pumps air through the blades. Such equipment is applicable for ductless ventilation.

The centrifugal fan has a spiral housing. This is the most productive, but also the noisiest equipment. The centrifugal axial fan has the highest performance. It is compact, efficient and has a low noise level. Today, equipment has appeared on sale in which humidity sensors are built in, a timer. This allows you to ventilate the room as efficiently as possible.

ventilation duct

There are certain requirements on how to make (ventilation in the bathroom and toilet with your own hands must be done with high accuracy) the right system. They must be considered before starting work.

The ventilation duct in a private house works simply. It is attached to special equipment or is displayed on the roof. This is an easy job. The creation of the project must be completed at the stage of preparation for the construction of the building.

The highest quality ventilation is obtained in houses made of natural wood. This is due to the ability of the material to "breathe". In this case, it will be enough to equip natural ventilation. The construction of logs and timber is considered not only beautiful, but also practical.

Owners of apartments in multi-storey buildings need to devote more time and attention to the arrangement of ventilation. All apartments in the entrance communicate with a common shaft, through which the air leaves the house to the street. If, for example, a bath and a toilet are one room (there is no forced ventilation), according to the norms of SNiP, air exchange per hour in the amount of 50 m³ is required. The higher the apartment is in the house, the more likely it is that this indicator will meet the established level.

Over time, the channels in apartment buildings become clogged. If they have not been cleaned for a long time, air exchange during natural ventilation is difficult. The lower the apartment is in the house, the worse the hood is. In this case, the installation of forced ventilation is simply necessary.

Fan power

To understand how to make (ventilation in the bathroom and a forced-type toilet is one of the possible options in this case) an exhaust hood in the bathroom, you should consider the basic requirements for creating such a system. In this case, it is planned to install an electric small-sized fan. This device must be secure. It should not fail if steam or water enters the structural elements. You should also pay attention to the noise level of the fan. He should not annoy the owners of the house.

Particular attention is paid to the choice of equipment power. This indicator is influenced by the dimensions of the bathroom and the number of people permanently residing in the house. For calculations, it is necessary to calculate the area of \u200b\u200bthe bathroom and toilet. Further, the result is multiplied by 6 if the number of users does not exceed 3 people. If there are 4 or more people in the family, then the dimensions of the bathroom are multiplied by 8. The result obtained will be the optimal fan power.

Fan installation rules

Do-it-yourself ventilation in the bathroom and toilet requires the correct installation of all elements of the system. There are several requirements for the location of equipment in the room.

The ventilation duct should be at the maximum height, preferably under the ceiling. It should also be located as far as possible from the source of air inflow in the bathroom. If this requirement is not met, only part of the room will be ventilated.

For forced ventilation, it is important to install the fan away from the water source. This will prevent accidental splashes.

If there is no ventilation in the room, and the exhaust duct is located in an adjacent room, it will be necessary to provide for the installation of additional ducts and pipelines. There are rigid plastic and movable corrugated structures.

Mounting methods

Most often, ventilation in the bathroom and toilet does not require the construction of additional air ducts. It is enough to install the selected fan at the entrance to the mine. In this case, the common exhaust duct should be located immediately behind the wall of the bathroom or shared bathroom.

It happens that the ventilation duct shaft is located behind the wall in the toilet. If it is separated from the bathroom by a partition, a hole can be made through it. Ventilation grilles are installed on both sides of the wall. This will be quite enough to create the required air exchange.

If there is access to the shaft both in the toilet and in the bathroom, separate ventilation should be made for each room.

One of the most effective approaches is the installation of gratings with slots at the entrance to the mine for the installation of forced ventilation equipment. In this case, the natural and intensive systems are combined.

Preparing for installation

At the renovation planning stage, a project is created in which ventilation in the bathroom and toilet is thought out. The advice of experienced builders will allow you to prepare and install correctly. Planning will allow you to hide the wires under the wall decoration, calculate the required characteristics of the equipment, as well as the location of all elements of the system.

If ventilation is created in a multi-storey apartment building, you should be responsible for cleaning the mine channel. If the property owners live on the upper floors, you can do this work yourself. On the roof is the exit of the exhaust shaft. You need to lower the weight into it. If the owners of the apartment live on the lower floors, it will not be possible to do without the help of representatives of the Housing Office or special services.

In a private house, it will be easier to clean the ventilation duct. Over time, dirt, cobwebs, debris from the roof, etc. also accumulate here. Having acquired all the necessary elements of the system, you can proceed with the installation.

Fan mounting

Do-it-yourself ventilation in the bathroom and toilet is easy to install. First, an electrical wire is connected to the equipment of the forced type of the system. It is selected in accordance with the selected fan power. Also, such conductors must have a high insulation class.

The fan is installed in a place prepared for it. It is attached with self-tapping screws. The grid is also installed using a special fastening material. This will eventually unscrew the grate and clean it from contamination.

If an additional ventilation duct is being arranged inside the room, it is possible to sew up the pipes under the ceiling with drywall. So the appearance of the room will be aesthetic.

Having considered what ventilation is in the bathroom and toilet, as well as the rules for its installation, each owner of an apartment or a private house will be able to create a complete system in the bathroom on their own.

Today, the hood in the toilet is not at all a luxury, but a first necessity in the arrangement of a bathroom. In most cases, this room does not have windows, so there is no access to fresh air in it. In addition, there will always be an unpleasant smell and high humidity, which will subsequently lead to the appearance of mold and various fungi. It is these problems that ventilation in the bathroom solves.

Show all

Varieties of ventilation

The type of ventilation system plays a very important role in the arrangement of the bathroom. There are many manufacturers of such equipment that produce goods of different quality. In general, ventilation is divided into two types:

forced;
natural.

If we talk about natural ventilation, then everything is simple. Even at the time of the construction of the house, ventilation shafts are mounted directly in the walls or on them. Their main function is to ensure the flow of fresh air into the room and the output of the exhaust to the street. In fact, this is the natural circulation of the room.

As practice shows, to ensure sufficient oxygen and a good microclimate in a house or, more importantly, in an office building, forced exhaust must be used. To do this, fans are mounted directly into the mines. Depending on the type of device, the fan can be in a box or without it. If a high-quality forced exhaust hood is installed in the toilet, and its power is correctly selected, then there will be no problems with excess odors and high humidity.

Extractor in the bathroom and toilet. Connection secrets from Alexey Zemskov

The toilet room differs from the rest of the rooms in the house in that it is visited only for a short time. In this regard, ventilation should also occur only periodically.

For the correct selection of this time, you just need to observe the microclimate in the room. First, you should purchase ventilation with a timer, and then set the ideal mode of operation, while the costs will be minimal. It is also necessary to take into account the fact that in summer ventilation should work 20-30% more efficiently.

Surprisingly, unpleasant odors can also appear with a fan, which is facilitated by their penetration through the ventilation shafts from other apartments in a high-rise building. This is especially noticeable on the first floors. The problem is solved simply - by purchasing a fan with a check valve.

The principle of operation of the system is also simple. When the fan is idle, it is closed by a damper, and after the start of operation, the air flow calmly pushes it away and draws the stagnant air out of the room. After the operation stops, the damper retracts.

Device Selection Rules

To date, the market for ventilation equipment is quite highly developed. There is a wide choice, and an ordinary user will not be able to quickly choose a decent model that would fit his needs and meet all the standards. Each individual product has its own functional features, power, equipment. To make the right choice, a person without experience should simply listen to a few tips and pay attention to the key characteristics of the device:

equipment performance;
safety in use;
noise level at work.

It should be noted that the hood is equipped with protection against moisture ingress into the housing. If such protection is not provided, then this can lead to a short circuit, damage to the wiring and failure of the ventilation system. In this regard, it is worth paying attention to devices with strong protection against moisture, while the voltage should be from 12 or 24 V.

The performance level is also an important indicator when choosing ventilation equipment. To obtain an accurate figure for the required power of the equipment, complex mathematical calculations are needed. But this can be done in simple ways. It is worth considering one rule - the hood for 1 hour should pump 12 volumes of the room. Only then can we hope for the quality work of the equipment and fresh air in the bathroom.

If the calculations are made, then it is recommended to buy equipment with a power slightly higher than the figure obtained. This must be done so that the hood in the bathroom does not work at full capacity, but has a certain margin. The reverse situation can lead to the fact that the equipment simply burns out.

Ventilation in the wall of a private house / for anti-odor toilet /

On the market, you can often find devices where productivity is at the level of 100 cubic meters per hour. For an average bathroom, this will be more than enough.

Any hood model will make noise even if the manufacturer positions it as silent. Sound can be either mechanical or aerodynamic. The first is due to the operation of the motor of the device, and the second is due to the vibration of the blade itself.

The maximum allowable noise level for such devices is 40 dB, and normal - 25 dB. This data must be specified in the instructions for the device. But if you liked the design, and the sound indicator from work goes off scale, then you can additionally install special sound insulation.

Self installation

Installing the hood in the toilet on your own is not too difficult, especially if the version is invoiced and you just need to mount the device in the hole. But in any case, the work will consist of several key stages.

Installation consists of the following steps:

We make ventilation with our own hands at no cost

There are situations in which you can not do without the help of specialists. For example, if there are several switches in the room or the hood for the toilet and bathroom is shared, then in this case you can’t figure it out on your own without work experience.

Suitable place for exhaust

When carrying out work on installing a hood in the toilet with your own hands, you should pay attention to several key factors and listen to the advice of specialists, otherwise you will not be able to do the work yourself. The device simply will not function effectively.

Things to consider:

If the electrical connection is shared, then you need to remember that the hood will not work when the light is off. This is not very convenient, so it is recommended to choose another option - installing a separate switch.

Devices with additional functions

If you install a separate switch for the device, then the model itself can be selected with additional useful features. They make it more convenient to use.

If the toilet and bathroom are located separately in the house, then only one fan can be used. In this case, you just need to connect the fan with a corrugation in the wall. This will ensure that two rooms are ventilated at the same time.

For inexperienced people who have not previously encountered the installation of ventilation systems, it will be useful to learn a few tips from the masters.

There is no need to purchase expensive and large models. Excessive spending will not always lead to a better result. The main thing here is to choose the right high-quality device with the required power. Even cheaper models can perfectly perform the main function.

If an air conditioner, an ionizer, a humidifier and similar devices are already installed in the house, then one should not forget about ventilation. This is necessary because the above devices do not provide fresh air.

It is necessary to pay attention not only to the power of the device, but also to the manufacturer. Often even inexpensive models of well-known manufacturers are of good quality.

If the operation of the ventilation system with natural circulation is not enough, it is necessary to install devices for forced ventilation of the room. This will allow you to constantly have fresh air. When installing even the simplest fan, the microclimate in the room will become comfortable.

Thus, installing an exhaust fan will not be difficult, the main thing is to approach this issue with responsibility. It is worth remembering the key factors by which you should choose a device, namely, performance, diameter, manufacturer and quality.

The health and well-being of the residents of a private house largely depends on the quality characteristics of the air they breathe. In apartment buildings, the ventilation of residential premises is designed and installed by the developer company. In your own house, the owner should take care of this on his own. The ventilation system installed in the bathroom of a private house can be natural and forced. Which one to choose is up to you.

Natural ventilation is suitable for houses built with breathable materials. Forced ventilation is mandatory for houses built using modern hermetic materials. A forced hood is selected for a bathroom in a private house, taking into account the square footage of the bathroom and the number of residents.

For the effective operation of the natural ventilation system in a country house, it is necessary to organize the inflow of fresh street air and the outflow of air masses through the ventilation shafts. In a house with wooden windows, fresh air can seep through microscopic cracks in the frames.

The optimal height of the ventilation inlet valve in the outer wall of the house is considered to be a distance of 2 to 2.1 meters. It is advisable to install climatic valves for a regular inflow of outdoor air into plastic windows with multi-chamber double-glazed windows. These devices on windows can be replaced by supply valves installed in load-bearing walls under window sills above batteries or on the side of window openings.

At the same time, cold air flows coming from the street will be mixed with warm air heated by batteries. This means that unpleasant and dangerous drafts will not appear in the house.

How does air get into the bathroom?

Portions of new air enter the bathroom from other living quarters of the house through a 2-2.5-cm gap between the floor and the door leaf, provided for when installing the door to the bathroom. Another option for air to enter the bathroom is to purchase and install special doors, in the bottom of which there are ventilation holes in the form of grilles or round windows. Sometimes, for these purposes, the bathroom door is not tightly closed, especially when it is not being used.

Interior doors for the bathroom, equipped with four round openings, closed with decorative lattice elements

Where does the steam and smells from the bathroom go?

The exhaust ducts are ventilation shafts directed vertically upwards. The bathroom should have its own separate ventilation duct, the side exit to which is designed at the top of the wall in the sanitary room.

Direct access to the ventilation duct is cut directly into the ceiling of the bathroom. It is in these channels that steam is drawn in, as well as all extraneous odors. The ventilation window is closed with a decorative grille. In no case should ventilation windows be sealed with wallpaper or other finishing materials.

With proper installation of natural ventilation in the bathroom, there will be dry air. Due to the timely removal of moist air, you will not face the problems of mold and rotting of the materials from which your house is built.

The ventilation window in the bathroom wall has a round shape and is covered with a light decorative grille to match the white ceiling.

Ventilation device for two rooms

In a two-story cottage house, through the ventilation shaft coming from the bathroom located on the first floor of the object, it is possible to organize air exhaust from the premises on the second floor.

At the same time, they cut into the ventilation duct not immediately at a right angle, but through a small elbow, part of which runs parallel to the exhaust riser.

It turns out that air is drawn in through a hole located below the entrance to the ventilation shaft. This is done in order to prevent suction of the elongated moist air from the bathroom into the living room on the second floor.

Installation of the ventilation duct

It is possible to assemble and install a ventilation duct in a private house that discharges exhaust air directly to the street from ready-made insulated elements. Such ventilation systems are produced by well-known manufacturers and are assembled as a designer. Their cost is high.

Choosing the Right Materials

Orange sewer pipes, which are used to conduct the outer part of the autonomous sewer network, help to solve the problem in a cheaper way. The walls of these pipes do not crack in the cold.

Choose the diameter of the pipe from the area of the room: 100 or 150 mm. The length of the entire pipe is calculated based on the fact that the ventilation duct should be located half a meter above the roof. The higher the pipe, the stronger the thrust.

Cutting ventilation holes

Put a plug on the upper end of the pipe so that precipitation does not get inside the ventilation pipe-channel. To vent air in the upper part of the plastic pipe, make oblong slots in a circle, the width of which is 20 mm, and the distance between adjacent holes is 30 mm. The length of the sawn rectangular windows should reach 250 mm.

Insulation of the walls of the ventilation pipe

In order to prevent condensation from forming in the installed ventilation duct due to the temperature difference in the attic and on the street, its walls must be well insulated. Suitable basalt wool or isolon.

We wrap the entire pipe with foil insulation with the shiny side to the walls.
We glue the connecting seam with foil tape.
Then we wrap it with insulation again so that the seam falls on the other side of the pipe.
And again glued with tape.
After that, a home-made ventilation pipe-mine is wrapped around in a circle all completely with adhesive tape.

Air vent device

A hole is made in the ceiling of the bathroom in a private house, equal to the diameter of the insulated pipe. The upper end of the exhaust pipe is inserted into the opening made in the roof, and the lower end is inserted into the ventilation window cut out in the ceiling.

A home-made ventilation duct must be fixed in a strictly vertical position with clamps to the roof rafters or to other structures in the attic of the house. In the bathroom, a hole in the ceiling is decorated with a lattice, matched in size and color. For fastening use self-tapping screws or liquid nails.

Installing the fresh air damper

The natural ventilation system in a private house works with the greatest efficiency only if a way is thought out to ensure a constant supply of fresh air from the street. This problem is perfectly solved by installing a valve in the wall of a private house. Outdoor air enters the house even with tightly closed plastic windows, passes through all rooms and is discharged through the exhaust outlet in the bathroom, covered with a decorative grille.

Thus, a constant air exchange is carried out, which is necessary to eliminate unpleasant odors from the bathroom, saturate the enclosed space with oxygen, and remove heavy humidified air outside the house to the street.

The design of the supply valve allows you to understand how fresh air is supplied from the street to the house and in what volume

To install the supply ventilation valve in a log house, you will need:

ordinary drill;
crown with a diameter of 133 mm with a center drill;
chisel;
a hammer;
tow or polyurethane foam;
hacksaw for metal;
screwdriver;
self-tapping screws;
screwdriver

In the living room of a private house-cottage, a hole with a diameter of 133 mm is drilled in the upper part of the log wall using a drill and a crown nozzle with a center drill. Work is carried out in several steps, chipping the drilled part of the tree with a chisel and a hammer. The hole in the outer wall is given a slight slope towards the street in order to drain condensate.

The supply ventilation valve kit includes a one-meter metal-plastic pipe, the inner walls of which are insulated with basalt heat-insulating material. The insulation does not allow the wall to freeze in the area of the drilled hole. A piece is cut from this pipe, the length of which corresponds to the thickness of the log.

The pipe is inserted into a hole in the wall. Small gaps are insulated with tow, which fills the gaps over the entire thickness of the wall. You can replace the tow with mounting foam. Further, from the street side, a grate equipped with an insect net is put on the pipe. The decorative grille comes with the valve.

Installation of a supply valve in a wooden house can be done on its own without the involvement of ventilation specialists

The valve itself is installed last. To install it, you need to remove the headband and free access to the mounting lugs. The valve consists of two petals that open at several angles of inclination. There is an arrow on the body, the direction of which is taken into account when installing the valve in a plastic pipe.

Additionally, we fix the valve to the wall with self-tapping screws. Then we put the headband, snapping it onto the fixed part. We return to its place the wheel that regulates the degree of opening of the valve petals.

Forced ventilation of the bathroom

If the draft in the ventilation shaft is weak, then you can increase the outflow of heavy, moist air from the bathroom using an electric exhaust fan. Check the traction force with a sheet of thin paper or a lit match. If the leaf sticks to the exhaust window, and the flame stretches towards the hood, then the draft is good.

With little or no draft, the only way out is to install an exhaust fan. At the moment, you can choose exhaust fans for a variety of situations, in various sizes and colors. It is advisable to calculate and install a fan of the required power, then your time spent in the bathroom will be comfortable.

Models of fans with a check valve in exhaust ventilation are very popular. As a rule, the check valve is already initially provided in the design of the fan. The damper shutters automatically open with even a small flow of air from the room and slam shut when there is a reverse flow of air into the room.

Transparent shutters of the non-return valve operate on the “nipple” system. The air flow to the ventilation system is free, the back is completely blocked

This design is very important in a situation where, due to errors in the calculation and installation, a reverse flow of air from the exhaust ventilation into the room is possible. Moreover, the curtains are autonomous and work when the fan is off.

Choosing a household fan with a check valve

Before buying a fan, you must unscrew the decorative panel and measure the size of the hole, if it was provided during the construction of a private house. With the data received, they are sent to the store in order to select and buy a device with a non-return valve that is suitable in size. When choosing, take into account the smaller of the measurements so that the round body enters the window.

Among models that are suitable in size, a fan is already being chosen according to a number of other criteria:

design;
electric motor power;
power consumption class;
the presence of a check valve;
noiselessness;
curtain movement, etc.

A variety of models of bathroom exhaust fans allow the buyer to choose a device that perfectly matches the interior of the bathroom

Exhaust fan connection options

There are several ways to connect the hood to the mains. The device can be turned on by sensors (motion or humidity), as well as simultaneously with the light. The shutdown of the fan can also be set in several ways - by a timer after a specified time or by a switch, which must be located inside the bathroom. The check valve is automatic and does not depend on electricity.

Connecting the hood to the light circuit ensures that it starts functioning at the moment the light is turned on. At the same time, the fan must have its own separate switch, with which it will be possible to disconnect, if necessary, the lighting and ventilation of the bathroom. The switch can be mounted on the wall or located on the fan housing.

One of the possible schemes for connecting a fan in a bathroom with a separate switch for the appliance

In the latter case, the device is turned off by pulling the rope or chain. Choose a model with a long cord so that the hood can be safely turned off by family members who are not tall. In principle, you can always make a long one out of a short lace by building it up.

Timer shutdown has its pros and cons. You don't have to worry about forgetting to turn off the appliance. If it is necessary to reduce the operating time of the hood or, conversely, increase it in comparison with the set value, then there are inconveniences. Therefore, choose a model with a switch so that the fan runs when you need it.

Do-it-yourself fan installation in the bathroom

Before installation, carefully read the installation instructions for the axial fan. Remove the device and all accessories that come with it from the box. These are, as a rule, fasteners in the form of four dowel-nails. In order not to drill tiles, you can replace the dowel fastener with an adhesive joint. However, it will be very difficult to remove the glued fan for cleaning and repair.

The value of the minimum distance at which the exhaust fan is fixed to the wall using self-tapping screws screwed with a conventional screwdriver

Therefore, we will take a closer look at how to make a forced exhaust from the bath in the house using a miniature wall fan fixed with self-tapping screws.

remove the decorative grille from the device by unscrewing the screw or simply snapping it off (different models have different ways);
insert the cylindrical part of the fan housing into the exhaust hole;
with a marker we mark the places for drilling tiles for dowels or self-tapping screws, depending on the material of the wall;
we remove the device to the side and proceed to drilling the tiles;
you can drill a tile with a drill using a special pen drill, or with a puncher, which is a little more difficult;
plastic dowels are inserted into the holes obtained;
in a special opening provided by the manufacturer, lead wires to connect the motor to the mains;
if the location of this opening does not suit you, then we drill a new hole in the body panel;
install a household fan, combining the lugs in the case with drilled holes;
twist the screws diagonally so that the plastic case of the device does not warp;
remove the fan impeller, freeing access to the contacts inside the device;
we put the stripped ends of the wires into the terminal block and clamp them with bolts;
we put the terminal block in place, laying the wires in a special groove;
we check the operability of the installed fan by turning on the light when connected in parallel or by pressing the device’s own switch;
after checking, we snap the decorative grille on the fan housing.

The forced extractor is mounted and ready to deal with damp and polluted air in the bathroom.

The wires are connected using various terminal blocks. For safety reasons, it is not allowed to twist the wires by insulating them with electrical tape

Note! The wires must be run in advance under the tiles during wall cladding in case of installation of forced ventilation. If this has not been done, then the wiring is carried out along the tiles in plastic boxes, which are glued to the tiles with polymer glue.

This video shows the installation of a ceiling extractor fan in the bathroom, which is projected to be located on the lower floor of a private two-story house.

Ways to combine two types of ventilation

When the hood is turned on, the volume of incoming and outgoing air increases. During the shutdown of the device, the process of ventilation of the living room is practically absent. This happens due to the fact that the fan housing completely blocks the lumen of the ventilation window. The propeller blades interfere with the natural outflow of air from the bathroom. The problem is solved in two ways.

We insert a double grille into a large ventilation window-hole, in which there is a round window for the fan and several additional slotted curtains for natural air outflow.

There are fans on the market with different case diameters, so you can choose a device that is smaller than the vent. When the fan is off, the air will escape through a simple grate located under the appliance.

If the ventilation window is small, then to ensure the natural outflow of air, they put a fan on legs of 1.5-2 cm. The legs do not allow the appliance grille to fit snugly against the wall. Air is drawn into the resulting space under the action of the traction force generated in the shaft, and leaves through openings that are not closed by the round fan casing.

The legs are made by hand from ordinary foam. Self-tapping screws go well through this material. The foam legs also serve as a shock absorber, reducing the degree of vibration of the operating hood.

An example of integrating two types of ventilation - forced and natural - in the bathroom of a private house

Having learned in detail about how to make a bathroom hood in a private house, you can decide for yourself whether this task is within your power or not. Perhaps the best solution would be to contact a company that provides services in your area for the installation of all known types of ventilation.