How to make ventilation in the country: the subtleties and rules for installing ventilation in a country house

Features of natural ventilation in a deaf room

Scheme of natural ventilation of a room without a window

Naturally generated ventilation is considered the most comfortable of all. It has an optimal effect on the microclimate of the room, absolutely imperceptible to humans.

Creating ventilation in a room without windows or with them is usually taken into account at the design stage, especially when it comes to the natural type. For this, special channels for air movement are being developed.

Otherwise, it remains only to use a hinged type box.

The principle of operation of the natural ventilation system is the free movement of air. The starting point is the supply unit, and the end point is the exhaust grille.

Circulation occurs at different temperatures at the inlet and outlet. When entering the housing, the air will be cold, and at the exit from it - warm.

A number of devices are used as paths for air flow, which can be:

• special valves in a window or wall;
• overflow gratings;
• doors that open periodically.

The main disadvantage of natural ventilation is zero efficiency in hot weather, as the difference in air inlet and outlet temperatures is eliminated.

Types of ventilation systems

When choosing which scheme will need to be drawn up in order to qualitatively mount ventilation in a private house, you need to remember the types of ventilation:

• Natural.
• Forced, equipped with mechanical devices.
• Combined.

Each of them has its pros and cons. But when choosing and further drawing up the scheme, you need to remember that you can not make an extract without an inflow or outflow. That is, the air from the room must go out and be replaced with fresh air, otherwise all installation work on the effectiveness of the final result will be reduced to zero.

How natural extraction works

Before you start planning and installing natural ventilation in a private house with your own hands, you need to familiarize yourself with the principles of its operation.It functions due to the natural draft that occurs inside the pipes running vertically, while the air moves from the bottom up.

The pull force depends on:

1. From the difference in atmospheric pressure at the top and bottom of the pipe. The pressure drop and thrust power will increase by increasing the height of the vent. channel.
2. Temperatures outdoors and indoors. The colder it is outside the window, the faster the cold air displaces the warm air in the house, prompting it to rise up to the hood.
3. Saturation with moisture. If the saturation temperature of water vapor is the same, the air mixture rises faster, it becomes lighter than dry air.

In summer, a natural hood will work worse due to a small temperature difference.

The natural ventilation inlet is an exhaust valve that is mounted on the ceiling or in the wall just below the ceiling. The exit is considered the top of the pipe. The design begins to work at a pressure difference at the outlet and inlet, approximately it starts from 10 m.

The natural inflow is mounted at a level of 2 m from the floor or above the batteries.

Of great importance is what the hood is made of. Spiral wound ducts are preferred as the material.

But more often, with self-assembly, they choose sewer pipes with a diameter of 110 mm.

The principle of arrangement of the forced system

Forced ventilation works in a private house with the help of mechanical exhaust units. They are powered by the mains, so do-it-yourself equipment will also require the skills of an electrician.

There are many schemes for such ventilation, the most popular are:

• The air flow is given with the help of breathers, they are installed in all rooms. A common fan is mounted in the attic, to which all the exhaust air enters and is removed.
• Installation of separate supply and exhaust devices with a heat exchanger that is built into the outer wall.

• Central air conditioning with a network of ventilation ducts.
• Fancoils are local heaters with heating/cooling functions.

Combined device

The principle of natural ventilation works here with increased air exchange with the help of electric fans installed at different points. There are 2 popular options:

1. The discharge of exhaust air is carried out by a vertical channel, and the inflow is carried out with the help of a fur. fans.
2. The fan is placed on the exhaust shaft, and the inflow is through the valves in the wall.

An example of a combined option is a kitchen hood or a fan in the toilet. With the help of such devices, fumes, unpleasant odors during cooking, etc. are sucked out during the cooking process.

Breezers, built directly into the thickness of the walls, provide a mechanized supply of clean air. In the cold season, with the help of heating elements, it is also heated.

Arrangement of natural ventilation

For the device of natural ventilation in a private house with your own hands, it is necessary, first of all, to calculate the ventilation system, made on the basis of such data as the volume of air in the room and the number of people living in it. Before installing a ventilation system, it is also worth considering devices that burn oxygen and emit harmful substances.

Installation of both natural and mechanical ventilation is carried out in seven stages:

1. Calculation of the volume of air exchange (determination of the required amount of incoming air masses that meet sanitary requirements).
2. Determining the dimensions of the ducts.
3. Choice of ventilation system (natural or mechanical).The decision is made after a thorough analysis of the parameters of the premises and the environment.
4. Drawing up a scheme of ventilation ducts.
5. Determining the location of ventilation equipment.
6. The choice of places for the intake and output of air masses.
7. Installation of the ventilation system.

To build natural ventilation in a cottage with your own hands, it is not necessary to have professional skills. You just need to study some points of installation. One of them is laying in the bearing wall of an exhaust duct with a diameter of 14 cm, with a masonry thickness of one and a half bricks. This condition is necessary to prevent the effect of reverse thrust. Further, from the central channel, a horizontal wiring is laid through the rooms, the diameter of which is 10 cm. To ensure sufficient traction, the exhaust pipe is made higher than the ridge.

The supply of fresh air can be carried out through the inlet window valve installed in the metal-plastic windows by the manufacturer. The valve is an adjustable slot at the top of the window. This method is considered if it is necessary to replace old or install new metal-plastic window blocks.

If the windows are already installed, natural ventilation in a private house can be provided by an inlet wall valve. A through hole is made in the wall and a round pipe is inserted, equipped with gratings on both sides. From the inside, the valve opens and closes with an adjustable grate. In order not to spoil the interior of the room, the valve installed near the window is covered with a curtain. To warm up the air coming from the street in winter, the supply valve can be installed directly behind the heating radiator.

At the request of the homeowner, supply valves are equipped with sensors and filtration systems. They are installed, as a rule, in the hall, bedrooms, offices. Exhaust channels are made in household rooms. Thus, the correct direction of movement of air masses is observed. If a sufficient supply of fresh air requires the installation of a large number of supply valves, it would be more appropriate to opt for mechanical ventilation.

Which ventilation option for a private house should you choose?

Do-it-yourself ventilation scheme in a private house should be drawn up according to the calculation of all necessary parameters. The calculation of ventilation is made on the basis of data on the area of ​​ventilated premises and the number of people in them. The air exchange rate is taken at the rate of 10 m³ per hour per person.

What air exchange systems are offered in private houses? How to make natural ventilation competently and functionally so that condensate does not collect, walls do not get damp and the air always remains fresh?

The following ventilation methods are offered:

• natural ventilation system;
• supply and exhaust ventilation system;
• combined ventilation system (when supply and exhaust are added to the natural one).

   
Providing ventilation with a duct fan.

The choice for do-it-yourself installation of a ventilation system in a private house depends on many factors. This is the state of the environment, materials of manufacture, construction of the house, and, finally, the financial capabilities of the owner.

There are rooms where additional installations will help to balance the microclimate.Therefore, a combined ventilation system at home will give the best result.

Do-it-yourself ventilation of the cesspool

Not everyone has the opportunity to hire people who will make ventilation for the cesspool. Therefore, everyone can do it on their own. Ventilation of the cesspool is necessary, but the process of creating such an air duct is not an easy task. First you need to calculate the diameter of the pipe that will be used for ventilation. After that, you can safely get to work.

How to make ventilation of the pit with your own hands? This does not require any effort. If you want to use the natural type of ventilation, then you do not need to have any special knowledge at all. In the inspection hatch, make a hole into which the fan pipe will be inserted. Remember, the higher the pipe is located, the better the air exchange will be. For ventilation of this type, you will need tools such as a knife, grinder, puncher, level and tape measure.

First you need to measure the distance from the extreme protrusion of the pit to the exhaust duct. Then we make a markup in order to drill a hole for the pipe. In order to fix it, you need to use a plastic sleeve. Treat the joint with sealant so that excess air does not enter the cesspool. A mesh is installed at the inlet of the pipe, which will protect it from contamination.

After all the steps taken, you need to supply electricity to the ventilation system. This is necessary for the fan to work. By the way, it is attached with self-tapping screws. Upon completion of all internal work, an air outlet is connected to the ground part of the pipe.From above, the pipe must be closed with a special cap that will protect the ventilation passage from precipitation and various debris.

It is important to make the hood in the cesspool in such a way that no outside air enters it. To do this, you need to firmly close the hole. Often in winter, moisture can accumulate on the outlet pipe, which affects the intensity of the air flow

Therefore, in order to avoid such a problem, a deflector is installed. This device allows not only to improve the air flow, but also to protect the pipe from various debris.

Often in winter, moisture can accumulate on the outlet pipe, which affects the intensity of the air flow. Therefore, in order to avoid such a problem, a deflector is installed. This device allows not only to improve the air flow, but also to protect the pipe from various debris.

It is best to make ventilation for the cesspool when installing the sewer system. So you can install your ventilation duct anywhere. It is also worth remembering that not in all cases it is worth using a forced type of ventilation. Natural ventilation will suffice. If you are not sure about the type of ventilation, then consult a specialist before starting work. He will be able to answer any question that interests you.

Organization of air flow and placement of air ducts

The inflow of fresh air into the room is vital for the people in it.

The easiest way to organize it is to open windows, but it is not possible to do this in the cold season. Therefore, there are other technical methods that depend on the subsequent distribution of the air flow: throughout the system or separately for each room.

Room-by-room supply ventilation - the organization of the supply of fresh air, as a rule, is implemented in one of the options.

Installation of the supply channel in the window block

Some manufacturers have already begun to independently include forced ventilation in window blocks or sell mortise structures separately. But this can be done with your own hands.

To do this, follow the instructions.

• With the frame open, find an external seal in its lower part and cut a piece no longer than 5 cm long. The removed piece should not be thrown away, since it can be returned to its place at any time.
• On top of the window frame, do the same with the inner seal.

The principle of operation of such ventilation is as follows: air enters through the slot from below, passes inside along the window frame, heating up at the same time, exits through the upper hole into the room.

Installing a wall inlet valve

The principle of installing the simplest wall valve has already been discussed above. It should be noted that its device is more efficient than ventilation through window blocks. It can be fitted with a heater for heating the cold air flow and a filter for cleaning. In addition, it is more compact compared to the entire ventilation system, so its installation is painless for the interior and affordable.

It should be noted the shortcomings of the supply valve.

• Installation work is associated with drilling walls, in some cases this is only possible with special tools.
• When drilling the channel, a lot of fine dust is generated, which is dangerous for people with respiratory diseases and allergy sufferers.
• A hole in a log or stone must be insulated.The quality of thermal insulation can be checked only when cold weather sets in. When a marriage is revealed, it will be difficult to fix something.
• Installation of an outdoor distributor and a protective grille is possible only from the street, which will cause difficulties for residents of the upper floors.
• If you want to equip the supply valve with additional devices for heating, cleaning or humidifying the air, you will have to provide them with power.

Ventilation with air flow distribution through an extensive network of air ducts

Most often, this method is used to equip large rooms or private cottages in which a heating boiler is installed. The fact is that it takes a large amount of air from the environment, so natural circulation will not be enough, and point valves will not cope. Ways of placing the supply ventilation equipment vary depending on the configuration and wishes of the residents. The simplest is at the entrance or in the corridor, since it is these rooms that communicate with all others.

Before installation, all necessary calculations for air exchange should be carried out in order to determine how much volume is needed for each room. The air duct must be supplied with cleaning filters, a heater, a humidifier and other devices are added at the request of the customer and based on his financial capabilities

Experts pay attention to the insulation of the pipe if it passes through unheated premises. Air ducts can be made of steel, plastic or corrugated aluminum

To isolate the joints, various sealants or electrical tape should be used.Manufacturers offer a wide range of sizes and shapes of individual duct elements, so it will not be difficult to join ducts of any section.

Photo of ventilation in a private house

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5 Ventilation in a private house: calculated data

Fresh air standards for different rooms of a residential building

Ventilation of a private house is based on careful calculations. The determining factors in this approach are:

• object area;
• the number of permanent residents;
• air volume in each room.

Installation of ventilation in the cottage is possible only if all the above factors are taken into account. For a competent calculation, you should use special tabular data and charts. The easiest way to equip a hood in a private house with your own hands is to make calculations by taking into account the area of ​​​​a particular object.

Supply and exhaust system of the house with indication of sections for each channel

This method is most often used for residential type objects. In accordance with the norms for such premises, at least 3 m3 / hour of clean air should fall on each “square” and this is without taking into account people. To calculate this value, it is necessary to produce the air norm per area of ​​the object.

The need for underground ventilation

The organization of underground ventilation in a private building is mandatory for the following reasons:

• From the temperature difference in the street and under the floor, condensate settles on the logs with floor beams and on the base. Without the organization of ventilation, drops of water containing acid destroy concrete, brick, wood, causing corrosion of building materials.
• Humidity contributes to the appearance, resettlement and development of mold and fungus that affects wood, metal, and concrete. Mold that has already appeared, with a natural normalization of the moisture level, does not disappear anywhere, and with its subsequent increase, it will begin to develop more actively in the affected areas;
• The closed space of the subfloor accumulates carbon dioxide, especially if it stores autumn harvested crops.

The humidity of the underground increases due to contact with soils, in which there is always water in different proportions.

Moisture is especially felt at the level of the soil, i.e. soil-vegetative layer up to 40 cm thick, actively absorbing rainfall and regularly irrigated during irrigation.

In the absence or insufficiently effective operation of the ventilation system, the subfield will be damp. Due to the lack of oxygen, a favorable environment will be formed for the development of anaerobic bacteria. In addition to everything, carbon dioxide will accumulate

Underfloor ventilation is necessary for almost any design solution.An exception is the construction of the floor on the ground, according to which beams or slabs are laid directly on sandy or gravel filling, and do not block the spans between the foundation walls with them.

Purpose of ventilation

Modern cottages are built from heat-shielding materials that provide high tightness, but prevent natural air circulation. You can solve the problem with high-quality ventilation, which provides the following indicators:

• creation of comfortable living conditions;
• fresh air is supplied to all rooms;
• evaporation and exhaust air are removed;
• interior items and housing are preserved;
• there is no stagnation of air, moisture does not accumulate;
• mold or fungus does not appear;
• the air is cleared of pathogenic impurities.

The climate control system must simulate a number of environmental parameters and automatically maintain them at a given level:

• If there are no hot summers in your region and air cooling is not a matter of principle for you or your business, and winter is very severe, you will certainly be interested in supply and exhaust ventilation with heating and recuperation.
• If you are brought to the center of a big city or to an industrial zone, dust and odors become an insurmountable obstacle to a comfortable life and productive work. room temperature control.

There are structural differences between the ventilation of a cottage and any apartment, so the organization is carried out differently.The differences are in a simplified filtration system, independent operation equipment can be installed in the cottage, it is enough to correctly place all the elements and the relationship with communications. For specialized premises, a special ventilation regime is required.

Ventilation design is "tied" to the layout of the house

• frequency of use;
• climatic features of the area;
• purpose of all premises;
• total building area.

These are important points that must be taken into account in order to create high-quality and highly efficient ventilation of the building.

The specifics of the channel hood

The exhaust air leaves the house through vents, ventilation shafts or air ducts. Ventilation ducts are usually brought to the attic or connected to a ventilation shaft located in the center of the house.

Ventilation ducts in the device and organization of natural ventilation of a private house are used mainly in the installation of the exhaust part of the system. Natural inflow through air ducts is most often impossible or ineffective. In order for it to work at least somehow, it would be necessary to mount a duct fan.

In natural ventilation schemes, channels provide the exhaust part of the system. Exhaust ducts in private homes are often combined into mines

To the hood of gravity ventilation, air masses are pushed by fresh portions of air drawn in through the window, the PVC window inlet or the open front door. The cross section of the air ducts is selected taking into account the air exchange standards for certain types of premises, which are given in the collection of SNiP 41-01-2003.

In addition to residential and utility rooms in a private house, ventilation systems require a basement and a storage facility built in it, a foundation without a basement, a cold attic or an equipped attic. In natural schemes, they are provided with air vents, gable and dormers.

Types of ventilation ducts

By location they distinguish:

• Embedded. They are constructed from hollow concrete or ceramic blocks, bricks. Such exhaust ducts are usually erected at the construction stage.
• Suspended. Made of galvanized steel or reinforced plastic. Installing hanging channels is quite easy, even after the house is already built.

Air ducts are divided into round and rectangular cross-sectional shapes. Each type has its own advantages:

• Round duct. Easy installation, better air exchange, less weight;
• Rectangular duct. It occupies less space, it is easier to mask boxes, false ceilings and walls.

In turn, pipes for a round duct are rigid and flexible, i.e. corrugated.

Corrugated ventilation pipes are easier to install, but their installation is possible only on horizontal surfaces and on small sections of vertical walls

Rigid pipes move air without any obstacles, so they provide the least resistance and minimum noise. However, with the help of corrugated pipes, installation is faster and easier.

What is a deflector?

The deflector is a special cap that is installed on the mouth of the exhaust pipe of the ventilation system. It cuts through the wind flow, due to which a low pressure zone is formed, while the thrust force can increase up to 20%.

Also, the ventilation deflector prevents atmospheric water from entering the ventilation system and prevents wind from blowing into the ventilation duct.

The deflector is installed at the mouth of the exhaust pipe. This device performs two important functions: increases traction + protects against atmospheric precipitation

There are the following types of deflectors:

• Cylindrical or Volper's umbrella. It is a curved cylinder covered with a plate. It has an average efficiency, well protects the ventilation ducts from wind blowing;
• H-shaped deflector. The body is made of pipes in the form of the letter H. It is distinguished by increased protection against wind blowing, moisture entering the channel and reverse thrust, but due to the design features it has a low performance;
• TsAGI type deflector. The design includes a glass with an extension at the end, an umbrella cover and a cylindrical shell. Recognized as one of the most effective. It protects well from wind, snowfalls, rains, has the lowest coefficient of resistance;
• Turbo deflector. It is a rotating ball with blades, it is characterized by increased efficiency, but usually costs a little more;
• Vane. Reminds me of a wing. The principle of operation is similar to a turbo deflector.

The choice of deflector model depends on local conditions. In regions with high wind load, ordinary fungi are preferred. In areas with low wind activity, it is better to install a deflector with a turbine, it will provide traction even with a light breath.

State standards

All rules are summarized in state standards - GOST, sanitary rules and norms - SanPiN, sets of rules - SP.

In these regulations, calculations of the air flow into various types of premises are given, which depend on various factors. They regulate the necessary parameters of air exchange and a healthy microclimate, as well as establish standards for the installation of ventilation equipment and its operation. For example, according to GOSTs, on average, one square meter of an enclosed space should account for up to three cubic meters of fresh air. In addition, up to 30 cubic meters per hour is provided for one adult tenant. They also indicate that for gasified kitchens the norm is higher than for kitchens with electric stoves - 90 cubic meters per hour versus 60 cubic meters. At the same time, 25 cubic meters are enough for bathrooms. m/h, and bathrooms - up to 50.

In addition to domestic standards, there are regulatory documents of the foreign community of Ashare engineers. If you plan to use American-made ventilation systems to equip your own cottage, then you should familiarize yourself with them. In particular, Ashare 62.1 defines the minimum allowable coefficients and parameters for ventilation, and Ashare 55 provides the necessary conditions for the microclimate and thermal comfort of buildings.

The initial stage of designing ventilation communications is to develop a technical assignment, which must specify the requirements for the exchange of air flows in each room of the building. Drawing up such a document requires certain knowledge, so if there is no confidence in self-development, it is better to invite specialists.

Basic development steps.

• Determination of standards for the amount of air supplied to each room. This parameter is necessary for calculating the dimensions and cross-sections of air ducts, as well as for working out the scheme of their branches. In the future, using the calculated data of the first stage, the optimal solution for the location of the ventilation ducts is selected.
• Choice of air flow method. After analyzing the technical conditions of the premises, safety requirements and the wishes of the customer, the most rational option is chosen. It can be natural, forced or mixed.
• Calculation of flow distribution inside the ventilation complex. At this stage, the required fan power, the volume of air that must pass through a certain section, and the losses of each unit are calculated.
• Calculation of noise characteristics and calculation of the sound pressure that air flows exert when moving through ducts. According to SNiP, noise should not exceed 70 dB.
• The final stage is the preparation of drawings with full details and specifics of each node of the system.

Based on the developed task, the scheme of the ventilation system is selected. It is necessary to coordinate and approve it before the internal finishing works of the building, since its implementation will require additional installation work for drilling various holes and channels. It should be remembered that some technical rooms require the installation of a separate ventilation cycle. For example, a boiler room and a boiler room - according to fire safety requirements, a garage - according to technical requirements.Solution methods may be different, but they must comply with the terms of reference, ensure ease of installation and further operation, that is, adhere to the following criteria.

• The number of nodes in the system should tend to a minimum, since the fewer parts, the less often they break.
• Service maintenance should be organized in such a way that it becomes available to ordinary users - residents.
• If air exchange adjustment and microclimate adjustment are understandable to non-specialists, then this significantly increases the rating of the equipment in the eyes of the buyer, as it reduces the cost of its maintenance.
• The ventilation system must have redundant units that will replace the main ones in case of their breakdown and during maintenance.
• Not the last factor is ergonomics: the complex must be correctly entered into the interior of the house.

What to do with a house with many apartments

Touching upon such a topic as ventilation in an apartment building in winter, it is worth noting that there are several relevant options for working with air flows.

1. Air is blown mechanically. In the same way, the polluted stream is removed from the apartment and house.
2. The mechanical air removal system is combined with natural inflow.
3. To remove air from the premises, a natural ventilation system is used, which functions due to constant draft, which, as in the case of a private house, is the result of the interaction of warm and cold air masses.

For more efficient operation of the system, individual channels from different apartments are combined into blocks. This avoids the transfer of dirty air from one apartment to another.

Forced ventilation

The organization of forced ventilation with mechanical stimulation will solve the problems of excessive humidity and lack of air exchange. But natural ventilation should be kept in working condition. Both natural and forced systems must fulfill their tasks.

It is not difficult to check whether the ventilation shaft is clogged; for this, you need to bring a lit match to the grate. The flame will show if there is air draft. You can bring fire only to the grate, you should look into the channel, highlighting it with a lantern. Sometimes a clogged shaft can be cleaned without leaving the apartment, using some kind of device in the form of a rod with a hook. A very dirty and unsafe job, but rewarding - cleaning the ventilation shaft, as a rule, reanimates natural ventilation. It is very dangerous when there is garbage in the mine, because it is dried there, and fires spread instantly in vertical ventilation ducts to all floors. That is why it is impossible to highlight in the mine with matches or a candle. In multi-storey buildings, this work belongs to the tasks of the departments of operation and maintenance of the housing stock.

Simultaneously with the solution of the problems of the hood, the issue of air flow should be solved. Sealed doors and windows allow you to save heat in the house, and at the same time block the circulation. Occasional ventilation by opening windows will do nothing but cool the premises; air exchange for normal ventilation must occur continuously.

We have to resolve the issue according to the principle of the golden mean - equip windows with supply valves, install infiltration valves into the walls (KIVs) and install decorative grilles with ventilation holes at the bottom of the doors of bathrooms and toilets.These grilles are available in hardware stores in several types and sizes, and look quite aesthetically pleasing. The door leaf will have to be cut at the bottom to install such a grille. It is not a good idea to remove thresholds at the entrance to bathrooms and toilets, they are installed there so that in case of accidental flooding, water does not flood the entire dwelling and it is possible to eliminate the consequences with little damage.

When installing plastic windows today, the issue of adjustable infiltration valves is easily solved. But if fully sealed window units are already installed, then for some models of these units it is possible to embed inlet valves into the upper parts of the window frames.

In the case when it is impossible to “depressurize” the windows, they solve the problem with the help of KIVs, but for their installation it is required to drill a bearing wall. KIVs are placed next to windows, preferably behind a heating radiator, which provides a thermal curtain and warms up cold air from the street. The valve grilles of KIVs are quite aesthetic, even if they are not hidden behind window curtains.

After the restoration of natural ventilation, the question of the need to supplement it with forced ventilation is easily solved. If "foreign" smells from the bathrooms and bathrooms in the house are not felt and the humidity in these rooms is close to normal, everything is in order. Although it is not a fact that this situation will persist throughout the year. Natural air exchange is too dependent on the difference in air temperatures in the house and on the street. A radical, but quite practical measure would be to install a duct fan.

artificial ventilation

The disadvantage of the natural system is that in the summer it loses its effectiveness. The temperature in the house equalizes with the street, the driving force of the system disappears.Artificial or forced ventilation is provided by special equipment. It can work at any time of the year, effectively purifying the air.

For a sealed and insulated country house, the ideal ventilation option would be to install a fan, air inlets or air handling units.

Artificial ventilation can be installed in rooms with high humidity, fumes of unpleasant odors. This is the kitchen and bathroom.

In the kitchen in a country house, it is advisable to install a natural type of ventilation

The fan needs electricity to operate. Running the system with a generator would be very expensive.

Conclusions and useful video on the topic

The process of mounting a fan and a check valve through a wall is described in detail in this video:

The operation of a high-power exhaust fan with a non-return valve is demonstrated here. The device is characterized by increased durability and low noise level during operation:

Exhaust ventilation is a necessary element for normal air exchange in the house. If it is installed correctly, then normal humidity and a microclimate favorable for human health will be maintained in residential premises.

Do you have experience in wall duct installation? Or have questions about the topic? Please share your opinion and leave comments. The feedback form is located below.