Reversible window fan. Exhaust window fans

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In the process of arranging your own living space, window ventilation is not provided for by every owner. At first glance, this question is not of paramount importance, but after a while it becomes clear that without a system window ventilation It is difficult to imagine a comfortable stay in a residential area.

The problem of air exchange has always been relevant for buildings with windows everywhere. Every experienced builder is aware of how important it is to equip a competent ventilation system in windows. But most unenlightened people do not even imagine why such an air exchange system is needed.

The main factors in the installation of window ventilation

As you know, ventilation helps to ventilate the room, releasing recycled air to the outside and simultaneously filling the housing with oxygen. This process is designed to provide healthy lifestyle life of any person, it has an important sanitary and hygienic value in the living environment.

In addition to the impact on health, proper air exchange helps to save electrical and thermal energy in home. In many old houses, window frames have many gaps, they lack the necessary sealing. On the one hand, it helps to ensure natural air exchange, allowing the whole house to be ventilated. Air passes through all rooms where windows are installed. On the other hand, this causes heat to pass through cold period year, which ultimately leads to extra cash costs aimed at providing the required heating of the dwelling.

Modern models windows made of PVC, aluminum and wood with high-quality thermal insulation and sealing solve this problem, but at the same time create another one. Natural ventilation is completely lost, and recycled air is not vented out of the room. Without the intake of fresh air, the functioning of the exhaust system is disrupted. A family of 3-4 people excretes up to 10-15 liters of wet deposits per day (sweat, breathing, cooking, cleaning, etc.). Normal quantity fresh air decreases. At the same time, the level carbon dioxide, as well as other harmful substances emitted from the environment (this can include household appliances).

Thus, the house becomes stuffy, condensation forms on the glass, walls and arched openings, which creates a favorable environment for the appearance of fungus, mold and harmful bacteria. Today all the houses are saturated various types household appliances. Few people know that it is one of the sources of the formation of allergenic substances. If you stay in an unventilated room for a long time with household appliances, then the head begins to hurt (attacks of suffocation and allergies are less common). To prevent such consequences, it is necessary to ensure proper air exchange inside the room.

Of course, the room can be ventilated in the simplest way by opening the window. But in this case, dust, poplar fluff penetrate into it, strong wind, and in winter period- also cold air. For this reason, the best solution would be to install window ventilation.

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Supply window ventilation system

Tools for ventilation installation: knife, tape measure, perforator, spatula.

The main task of such ventilation is the supply of a continuous flow of clean air into the room. The formation of clean air is due to the presence of a special filter in the supply ventilation, in addition to which there is a special mesh against insects. Such an air exchange system in no way violates the tightness and sound insulation of windows, that is, modern technological solutions will not lose their main advantages.

The main advantages of supply ventilation:

1. Absolute safety for the child.
2. The mechanism does not need power.
3. Ease of use (manual control).
4. Has soundproofing properties.
5. The system is equipped with a mosquito net.
6. There is an integrated system of protection against penetration from the outside, which allows for air exchange even during the absence of the owner.
7. The functioning of the mechanism does not depend on atmospheric and natural conditions.
8. There is a control system that prevents the formation of a draft.
9. The device has a compact size, it is almost invisible to the naked eye.
10. The clean air filter is able to clean the incoming air from harmful smoke.
11. Installation is made in any types of windows.
12. The device does not require dismantling the window or reinstalling it.
13. Low cost.

The current standards indicate that air exchange should take place at least once per hour. supply system window ventilation is able to supply the room with clean air even at this level. Modern window models cannot do without such a system.

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The principle of operation of supply ventilation

The supply window ventilation system functions on the basis of two parts: an external panel (installed from the outside) and an internal panel (mounted from the inside). Both parts are connected by a small opening through which fresh air enters. Outdoor panel equipped with an automated valve floating in a stream of clean air. When the pressure difference increases, the valve lifts and closes the opening. Accordingly, as the difference decreases, the valve is lowered. According to this scheme, the system supplies the living space with fresh air, regardless of natural phenomena.

The outer panel provides protection against rain entering the opening. It has a built in mosquito net. Inner part equipped with a sloped panel designed to control the airflow, which is carried out using a special cord.

During the installation of the air exchange system, certain rules must be observed. For example, supply air should come in a smaller amount than the outflow.

Usually, when choosing a mechanism, a qualified specialist takes into account all the nuances of living space, but you can figure them out on your own.

Installation must be carried out according to a certain scheme: 1 or 2 devices are placed at points that are located in the most remote places from the exhaust duct of the kitchen and bathroom. This will ensure the optimal level of ventilation in all areas of the house. When installing, you should pay attention to the fact that one device is intended for 2-3 hoods. Otherwise, air exchange will not work properly.

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Other types of window ventilation

In case of poor functioning of the hood in the house, condensation most often appears on the windows and walls, and mold often forms in the corners of the profiles. Under such conditions, it is better not to install powerful supply ventilation. It is necessary to select special micro-ventilation devices such as Fresh Air, which help to reduce the level of condensation in window openings.

If you live in high-rise building, where the hood is well-equipped (this can be checked with a paper sheet brought to the ventilation grill: it will not slide), it is advisable to equip the apartment with the Aerovent ventilation system. It is not recommended to install systems that are more powerful than this, since there is a possibility of a reverse air flow coming from the hood.

In the case of the selection of window ventilation for an apartment or a large house, a qualified specialist cannot be dispensed with. Only he will be able to correctly calculate the power of the air exchange system and mark the locations of ventilation equipment.

For special rooms where it is constantly maintained high level humidity, it is customary to use ventilation systems designed for winter gardens.

Today, for domestic and industrial needs, not only new technology is used, such as the most powerful hoods and air conditioners, but also a number of window fans. This cleaning option is inexpensive and quite effective, so it is still quite popular and is used in different spaces. If you are going to purchase it, first figure out what power of this device is suitable for the room where it will be installed, what functions it should perform, because this kind of fans are not produced and have different purposes.

This air exchanger is applicable in cases where it is not possible to install other air conditioning. His choice is often made either before the installation of a double-glazed window, in order to initially select the connector required for its installation, or in those rooms where wooden windows, and make a hole (or it already exists in the form of a window) - it will not be difficult.

Mounting this appliance will be necessary when condensation from moisture accumulates in basements- cellars of private houses, small industries; when several rooms are separated plasterboard wall, but require additional ventilation in order to get rid of air stagnation; in warehouses where moisture and its characteristic smell accumulate.

Installation of this unit in apartments and houses will good decision to maintain a healthy microclimate. Advantages of this solution: reliability, low noise level - within 25-30 dB; productivity, which is determined by the volume of the room. When choosing, it is worth relying on air circulation at the rate of 30-80 m3 per person.

Rice. 1. Window fan is the easiest and most affordable

Types of window fans

The main types of fans are the following: axial, which is divided into three more subtypes - supply, exhaust, supply and exhaust, as well as domestic and industrial.

Each of them has its own properties and differences: appearance, power, functionality. So, for example, axial ones have a simple design, but a rather large output in terms of efficiency. Household ones cannot boast of power, but they have a neat appearance, do not spoil design solutions in living space. At the same time, industrial ones are quite powerful, but their appearance does not have much weight when choosing.

Axial window fans

As already mentioned, these have a simple design. In fact, they consist of a propeller (in other words, a blade), the body itself and the engine, thanks to which the propeller is spinning. This device has an axis of rotation; air is forcibly pushed along it with the help of blades, creating a powerful stream.

Axial fans are not manufactured according to the standard, and depending on the purpose of use, they differ in the diameter of the screw (the blades can be from several meters to a couple of tens of centimeters). The number of propeller blades varies depending on the purpose, and the engine power may also vary.

Rice. 3. Simple design- but maximum benefit

Exhaust window fans

The exhaust fan acts as an aid to kitchen hood, or works independently, eliminating extraneous “flavors”. His work is aimed at removing polluted air. Due to the rotation of the blades at a speed of about 4 thousand revolutions per minute, with low power consumption, it eliminates excess moisture or excess heat, and produces some kind of one-sided air conditioning.

With the purchase of this type of hood even with shutters, it will be possible not to think about the back draft that exists in conventional hoods, since the shutters prevent this moment.

Supply window fans

The supply air exchanger works opposite to the exhaust air exchanger. With its help, air flow is supplied, but does not decrease. This type is used for such a room where there is no need to clean the air, but only to fill it with oxygen. Used in residential and guest rooms, offices.

As is known, the rate of air exchange in residential areas should be at least 30 m3 per hour per person. It is important to consider that those rooms where additional enclosing structures are located (for example, a plasterboard wall) require additional ventilation. The inflow rate also varies depending on the “occupancy” of a residential or office space.

Supply and exhaust window fans

This is already a whole ventilation system that works in both directions, performing full ventilation, both to remove stagnant air and to bring in oxygen from the street.

The reversible (i.e. supply and exhaust) fan operates in next order: outdoor oxygen is taken in and at the same time oxygen is taken inside the room, then from both directions the flow is cleaned by filters, street (often cool) is fed into a heating element(heater), in addition, the street warms up, because it intersects in the system with the one that is displayed. Such functions are inherent in this type due to its distinctive structure.

Household window fans

These have a number of advantages worth paying attention to: they are small-sized, inexpensive, consume little energy, have a low noise level, their installation is easier than any other modern equipment.

With the help of a window domestic fan, you can ventilate your home without heat loss and without dirt and dust entering the room. Oxygen in the living room should be completely updated every 2 hours, but few people follow this rule and ventilate it so often. Therefore, a household window fan, or a similar one - a window fan, will ensure regular maintenance of a good microclimate.

Industrial window fans

The peculiarity of these is their large size and use exclusively for warehouses, workshops of small and large industries. In such places, it makes no sense to install air conditioners, but the good old fan will work out its own. In many factories, from ancient times to this day, the main “rescuer” is a fan that supplies oxygen and “takes away” pungent odors from work shops.

Usually their installation is provided during construction, and window openings have already been made taking into account their installation. These units boast big power, meter blades, but also a considerable noise output.

Features of window fans

Differ window fans that they do not require huge amounts of electricity to operate. But with all this, they wonderfully perform their functions. Household will do a good job of refreshing the room in the house: kitchen, living room, living room, will help to cope with the problems of too humid or too dry air. Industrial, often reverse, will be able to clean the air of odors and give the room oxygen from the street.

With their simple structure, they have a good efficiency output, consume a minimum of electricity, even when large sizes, with little noise, easy to install. Environment it does not matter for the efficiency of their work, both at minus 30 and at plus 30 - the fan will perform its direct function. It is also important that special blinds have been developed for these devices, thanks to which, when the device is turned off, there is no loss of heat from the inside, and cold does not get in from the outside.

How to choose the right window fan

Manufacturers have not in vain foreseen Various types. This was done not in order to visually increase the market for this product, but in order to bring the functionality of the device as close as possible to certain conditions.

In order for the choice to be correct, it is important to familiarize yourself in advance with the information on how powerful the ventilation in the room should be. If the room is industrial, then of course it will be a powerful supply and exhaust fan. If installation is required in an apartment, then a small-sized one will be quite enough.

For kitchen

The kitchen requires a special approach, since it is in this room that there are a lot of extraneous odors after cooking. To do this, it is important to purchase a supply and exhaust, or wall-mounted air exchanger, with a fairly a good indicator power. Window air conditioning will save your neighbors from your smells, which often seep through the chimney.

In the kitchen, in addition to the hood, you just need to install an additional air vent to clean kitchen space by taking excess heat and burning from cooking, if this is still equipped mosquito net is the ideal option.

For bathroom and toilet

In the bathroom, there is often a problem with the accumulation of condensate, due to which fungus forms. If this room is combined with a toilet (bathroom), then there is an additional problem unpleasant odors. wall type for the toilet is a great solution, but it must be installed with check valve, in order to avoid the distillation of smell and humidity from this room to the living.

Usually the ventilation of the bathroom is connected to the lighting, respectively, when the light is on, the air outlet also works, and when it is off, it stops rotating. This scheme of work is simple, but at the same time very effective.

To a lounge or lounge

In such spaces, installing a supply fan will be more than enough, although many advise installing both a supply and exhaust fan for maximum air exchange, hit more oxygen. After all, the room is not intended for active domestic needs, but for relaxation.

In order for the rest to be complete, before buying a fan for a bedroom or a hall, you need to find out what power the device will require, for which the volume of the room and the frequency of air exchange are multiplied according to the table below.

Installing a window fan

Installation is carried out in two ways, and the installation method depends on the double-glazed window. The first method is applicable to single-pane or double-glazed windows, often wooden, of an old design. Here, installation is not difficult, because all that needs to be done is to remove the glass, cut it to the shape of the fan that will be installed, then install it back, attaching it with glazing beads, then install the ventilation.

The second method is used more often, because in almost all residential premises there are metal plastic windows. In order not to damage the sealing of these double-glazed windows, it is necessary to make every effort, because it is unreasonable to completely replace windows for installing a fan. Therefore, for such manipulations, specialists are invited who remove the double-glazed window, and another one is installed in its place, with similar dimensions, but already with a cut hole for the fan.

For installation, rubberized seals are used that do not allow the windows to depressurize. At a time when the device is not connected to the network, it closes the blinds that prevent heat loss.

Modern exhaust window fans are represented by a wide range of products. They are divided as follows:

1. By design:
   Axial. Installation is carried out using a special coaxial mount (pipe in a pipe with latches - Ventilor, Smart), on self-tapping screws, closed decorative overlay- IN, on a special plate - ECW. These window extractors are generally energy efficient and virtually silent, making them ideal for domestic use. Centrifugal.
2. By appointment:
   • Household. The product range is presented a wide range models that have stylish design and compact dimensions. Household window exhaust fan is optimal for shower and kitchen areas.
   • Industrial. They have high power, increased reliability and durability, and are also designed for long cycles of work. Are established in systems of forced-air and exhaust ventilation.

In RFComfort you can buy a window exhaust fan in a different price range Italian manufacturer O.Erre, which allows you to satisfy the needs of even the most demanding customers. The company's products are distinguished by thoughtful design, ergonomics and reliability.

• Ventilor AR is a reversible window exhaust fan with automatic shutters.
• Smart A, Ventimatic. exhaust models with automatic blinds.
• Ventilor M, Smart M, Ventil - exhaust fans with manual blinds.
• Smart A, Ventimatic - exhaust models with automatic blinds.
• Smart AR is a supply and exhaust fan with automatic shutters.

For all models, operating modes (on/off, reverse, 5 speeds) are controlled by a wired remote control RG 5 AR (option).

Every person strives for comfort, which begins with the arrangement own house. Clean air, the optimal level of humidity in the room, normal air circulation - the necessary conditions human life. These indicators are health and comfortable conditions labor and rest. For ventilation of premises, a window exhaust fan is increasingly used. Window fans contribute to the continuous renewal of the air, which guarantees a comfortable stay in the house.

Exhaust window fan improves quality of life

Household window fans, types, characteristics

Window exhaust fan - a special device used for household purposes for cleaning, extracting air from rooms, stabilizing optimal level humidity and circulation. An analogue of a window fan is a window fan installed directly in the window, hence its name.

Thanks to similar principle work, characteristics and dimensions, these devices are interchangeable. The window model is mounted directly in the window, on the window, by the window, its dimensions, the choice of the device model, the diameter of the device, the size of the hole in the window frame for installation is determined. The power of the model is selected according to the area of ​​\u200b\u200bthe room. The window fan serves for a long time, up to 11-14 years, the operating temperature of window fans varies from - 40 ° C to + 40 ° C.

Window Fan Features

Household window fans have a number of characteristics that distinguish them from other ventilation devices:

• minimum energy consumption;
• low noise level;
• equipped with blinds, which contributes to the preservation of their tightness;
• the built-in external cover protects from hit of rainfall;
• small sizes;
• affordable prices for appliances;
• simple installation;
• Possibility to control the speed with the remote control.

There are many factors to consider when choosing an exhaust fan.

When buying a fan, consider the following characteristics:

• noise level of the model;
• the power of the device must correspond to the living area;
• equipping the device with devices that eliminate the effect of back draft insures the device against insects and
• dusty air.

The window exhaust fan works as a hood, the exhaust characteristics of this type are optimal. Air flow or a jet of air directed outward, from the room to the street. Main tasks:

• drawing out excess heat;
• excess moisture;
• various gases;
• dust.

Such models will consume up to 10–20 W, and perform up to 4 thousand rpm. Household fans, made in Italy, are adapted to work in rooms where there is a significant temperature difference between the house and the street, such a room is a vestibule. The temperature difference in the vestibule of the dwelling reaches its maximum during the heated period.

The peculiarity of this room is a sharp temperature drop with the formation a large number condensate.

In the vestibule, it is better to install an exhaust window fan made with special blinds, such a device retains heat. The fan shutters are closed when the power is switched off, in this device there is no back draft, due to which heat is lost. And fans with a cover are also used, the principle of their operation is the same as that of a fan with shutters.

Window fans are made of plastic

Window exhaust fans are made of plastic, this material has heat resistance, impact resistance, and is immune to ultraviolet radiation. Plastic elements fans undergo special laboratory testing, the plastic must withstand temperature extremes from +50°C to -50°C.

Varieties of window fan

There are many types of window fans. Common are: window exhaust, window reversible supply air.

The window reversible fan simultaneously performs two tasks:

• elimination of polluted air;
• supply of clean air.

Ventilation in windows, by means of a reversible fan, is reliable and efficient. Such a fan changes the direction of the moving air jet, works as an extractor hood, in the mode of removing exhaust air, and in the mode of inflowing clean air from the atmosphere. The operating mode is set automatically or using the control panel. Advantages of window reversible fan:

• simple installation: you can install the equipment in the window reception and attach it with bolts;
• the installation of a fan does not require an air duct system;
• fans are small;
• have a convenient operation mode.

When installing window fans, the question often arises, which fan to choose for a particular room? The fan is selected according to the type of room in which it is planned to be installed. For bathrooms rooms will do installation of exhaust or reversible fans, for kitchens - only exhaust, for living rooms - installation of supply devices. Practice has shown that Italy supplies the most functional and most reliable models to the market.

Reliable way of ventilation in pvc windows - supply valve

It is difficult to imagine modern housing without plastic windows. The popularity enjoyed by PVC windows is great, they have long supplanted ordinary wooden windows, since they have a number of advantages:

high tightness;

excellent sound insulation;

easy installation;

long service life;

shock resistance;

heat resistance;

drainage holes in the profile structure.

PVC windows have a long service life

Plastic window profiles are well protected from damage, they are reliable and easy to use. Each plastic window has drainage holes that protect the structure from moisture that can accumulate in it from outside. Drainage holes are in the profile window frame, they must be present in all pvc windows. Drainage holes protect the profile from water and prevent the appearance of frost inside the window frame, extending the service life to unlimited.

According to the estimated characteristics, pvc windows have no equal, but there is one drawback, plastic windows are not equipped with built-in ventilation ducts, so there is no ventilation system in pvc windows. old way The solution to this problem is ventilation. In rooms where plastic profiles, it can be carried out due to the general ventilation of the room or open windows in the rooms, but this option is fraught with drafts, dust, and sound insulation. All properties pvc windows, with normal ventilation, are reduced to nothing.

How to ensure ventilation in an apartment with sealed plastic windows

The owners often ask themselves: how to make ventilation in an apartment with plastic windows? Right choice– installation of the supply valve on the window profile. Supply valve- this is a special device that is mounted horizontally on the top sash window profile, the main task of the valve is to restore natural ventilation in room. The supply valve facilitates the inflow of fresh air from the atmosphere. There are several important advantages of the device:

The supply valve is necessary for the influx of fresh air from the atmosphere

• the valve does not close the window opening;
• the valve contributes to the supply of fresh air;
• ventilation occurs without loss of warm air;
• the valve does not affect the sound insulation level of the profile;
• ventilation without harm to health (no draft);
• autonomy from the window profile;
• installation of valves does not violate the integrity of the window frame.

Supply valves are different types: made of wood, plastic and metal. The valves can be controlled automatically and manually. Automatic adjustment is effective and convenient, since the need to close and open the ventilation duct is determined independently, without human intervention. The valve is adjusted by changing the pressure and changing the humidity in the room.

It is better to install the valve directly with plastic windows, in plastic windows, on plastic windows, with this type of installation, you do not need to use the wall near the window, changing its appearance. When choosing a valve, it is necessary to study its characteristics regarding sound insulation, the metal-plastic profile should have similar characteristics. It should be remembered that the valve must be looked after - periodically cleaning the grille of the outer visor from dirt, wipe the valve body with a damp sponge.

Efficient ventilation of housing is the preservation of health and comfortable pastime.

A variety of ventilation devices helps to choose the best way for your home. It is important to remember that any ventilation device has both positive and negative characteristics, so its choice should be made carefully and deliberately.

September 17, 2016
Specialization: master in construction drywall constructions, finishing work and styling floor coverings. Installation of door and window blocks, facade finishing, installation of electrics, plumbing and heating - I can give detailed advice on all types of work.

A window fan is the simplest solution for air exchange in any room. Personally, I like this option because it does not need ventilation system, no need to make a hole in the wall, the design is placed in the window opening and is characterized by maximum autonomy and safety.

I will tell you what criteria you should pay attention to when choosing and what modifications are on the market, based on this information, you can easily understand this topic.

Even before the purchase, you need to deal with a number of criteria, and it is with them that we will begin our consideration of the topic. In the following, I will discuss the main equipment options and give specific examples and fan models to make it even easier for you to choose the best solution.

Factors to consider

There are several main indicators that affect the choice of a fan, and the very first of them is the volume of air exchange. It indicates how many times per hour the air in the room is updated. Let's figure it out specific example: a room 3 meters wide, 4 meters long and 2.7 meters high, we calculate the volume - 3x4x2.7 \u003d 32.4 cubic meters, this is the base value.

The number of necessary air changes per hour depends on the purpose of the room, the main norms are as follows:

• For bedrooms, an indicator of 2-4 is used;
• In bathrooms and bathrooms 6-10;
• In the kitchen, you need a fan to pump 10-15 volumes per hour. If we take our example as a basis, then you will need a fan with a capacity of 324-486 cubic meters per hour.

Another factor that cannot be ignored is the size of the structure, here we can highlight the following nuances:

• The fan should be placed in the opening or window provided for it, it is better to choose such solutions that can be installed with minimal alterations to the opening;
• The design should not impair the lighting of the room if such a problem occurs, then it is better to look for small high-power products.

If you design a kitchen in a certain style, then the design of the fan should be combined with it. It makes no sense to put a futuristic high-tech option in a classic setting. Color also has great importance, and, although the bulk of products are available in white, other options can be found if desired.

It is also worth paying attention to the type of construction control, if earlier it was regular options with buttons, you can now buy systems with control panels. This is very useful in cases where window extractors are located high and difficult to access.

A window fan is a kind of window fan, although some manufacturers make this product line separate. The difference is that such products are most often made under standard sizes vents, but nowadays, when plastic windows are used everywhere, there are almost no vents anywhere, you need to order the option with a vent to install a fan.

Another very important aspect to consider is the preservation of heat in the room, because through the fan the cold can freely penetrate inside. To eliminate this problem, two modifications of the equipment were developed:

• Fan with cover - in cold weather you just need to close it and the system will automatically stop working. This is a simple solution that is suitable for those who turn on the equipment as needed. The only negative is that the lid must be closed manually, and if there is no one at home, then the cold will penetrate into the room;

• Systems with automatic blinds - more modern solution, which does not need manual control. When the fan turns on, the shutters open, and when it turns off, they close, this is a very convenient and, not least, completely autonomous option that can work for years according to a given scheme without outside interference;

If you have come across fans in everyday life, then you know how important it is for them to have a minimum noise level. I've seen cheap Chinese options that hum like a fighter jet on takeoff when turned on and create a huge inconvenience for everyone in the room. Choose low noise options and remember that window fans increased power always make more noise than usual.

Finally, another factor that should not be overlooked is security. Modern manufacturers offer powerful equipment with excellent characteristics that runs on a voltage of 12 volts, these are the options you need to choose. They are completely safe and cannot cause mortal harm to human health, even if short circuit, the kit comes with a power supply that connects to a regular 220 volt network.

If you have decided on the main criteria, then you can go for a fan; three types of equipment are on sale:

Exhaust fans	This option draws air from the room and is great for kitchens, bathrooms and bathrooms. It's simple: the flow is directed outward, which allows you to remove moist air and strangers as efficiently as possible.
Supply systems	Here everything is also clear from the name: such fans draw in air from outside. They are ideal for bedrooms, living rooms and other living spaces where a constant supply of fresh air is needed.
Reversible fans	In another way, they are called supply and exhaust, they can provide simultaneous exhaust air from the inside and its influx from the outside. It is this option that provides optimal air exchange and can be used in any room.

In places with polluted air, such as near busy streets in cities and near highways, it is not recommended to use supply fans.

As far as construction is concerned, any household fan has an axial device, that is, the air intake blades are located on the axis and are driven by the engine. It's simple and at the same time reliable system in which the use of high-quality components is very important.

Therefore, regardless of the brand, type and manufacturer, it is necessary to begin consideration of the option with a request to present documents confirming the quality of the product; it is better to immediately refuse options of unknown origin.

Now let's deal with the most important criteria that you need to pay attention to when choosing:

• Production material - the body and the impeller must be made of impact-resistant ABS plastic, weather resistant and ultraviolet radiation sun. The corresponding mark should be in the documents for the equipment. The surface should be smooth, without streaks and flaws;

• The equipment must have a low noise level, as well as an IP24 degree of protection, this confirms its safety for human health;
• It is important to have a protection unit against engine overheating in the design, it will prevent damage to the motor due to excessive heating.

The control system may also differ, there are several main options:

• The B type pull cord switch is the simplest and cheapest solution, the price of such options is the lowest among all;

• The system can be turned on via conventional switch, in this case, you will have to purchase it separately and independently stretch the wires from the fan to the control unit;
• A more advanced option is a thyristor equipment speed controller, it can manage both one and several units;

• The off timer allows you to control the operation of the fan. You set the operating time, and the system will automatically turn off the fan when necessary;

• You can additionally purchase an electronic control unit that allows you to set the operating mode of the system. This is perfect solution, which ensures the autonomy of the equipment without outside interference.

Choose the solution that is most convenient, it is not worth saving, because in practice it often turns out that people forget to turn off the system or do not turn it on in time. Automation will independently monitor the work and provide optimal ventilation of the room.

As for brands, there are quite a lot of them, but the leading position is occupied by the Vents company, these fans can be found in all regions, and they differ good quality and democratic price. Supply fan as an option, I will not consider due to the inappropriateness of its use on this moment, it is much more reasonable to buy a supply and exhaust option.

The most popular models today:

• "Vents VV 230" has maximum performance 455 cubic meters per hour, which is quite enough for almost any kitchen. Exhaust fan with grille on one side and automatic shutters on the other. The size of the front part is 295x295 mm, the diameter of the structure is 237 mm, the cost today is about 2500 rubles;

The BB series is a great option for kitchens and bathrooms

• The model "Vents 125MA01" has a very attractive design, on both sides there are decorative rectangular elements measuring 173x186 mm, between which a pipe with a diameter of 125 mm is placed. The design provides for automatic blinds, an exhaust fan and has a capacity of 185 cubic meters per hour, suitable for small kitchens and. As for the cost, it is about 1800 rubles;

• The supply and exhaust reversible window fan "Vents VVR 230" has a maximum capacity of 455 cubic meters per hour, is equipped with automatic shutters and can work both for air extraction and its supply. The model has a low noise level and excellent reliability. The average cost is about 3000 rubles.

If you decide to install a fan with your own hands, then short instruction will help you understand the features of the workflow:

• First you need to cut a hole in the glass. If there are two or more glasses, then the work becomes very complicated, I personally made round cutouts several times and I can say that it is very difficult. Easiest to use special device, which is called a ballerina, with its help it is easy to set the desired diameter and cut a circle on the window glass;

• Next, you need to check how the fan becomes, if everything is fine, then all seals are put in place, after which you need to check how tightly all the elements adjoin the glass;
• The mount comes with the fan, if you have concerns about the tightness of the connections, then apply around the perimeter silicone sealant, after which you can tighten the fasteners;
• The connection method depends on the control option you choose, if you choose automatic, then all the necessary information regarding the attachment of elements will be in the instructions, there should also be detailed diagram. The fan is connected to the network through an adapter;

Conclusion

Based on the foregoing, we can conclude that the supply and exhaust window fan is optimal solution for any room. The main thing is to choose correct power equipment and install the system automatic control for offline work. The video in this article will help you understand some important nuances even better, and if you want to ask a question, then write it in the comments below.

September 17, 2016

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