Any residential, industrial or public premises must be equipped with a ventilation system that is designed to remove exhaust air. The power and design of the system directly depends on the value of the room, so ventilation clean rooms such as hospital wards, medical laboratories, etc. must have increased power. To keep your ventilation system running smoothly and efficiently, it requires regular cleaning.
To clean or not to clean ventilation?
The vast majority of users think about cleaning the ventilation system, only when they already appear obvious signs lack of air exchange in the apartment, such as:
- Mold on walls and ceilings.
- The smell of cooking food from neighboring apartments.
- The smell of the toilet from neighboring apartments.
- Stuffiness and stuffiness of the air.
Many are sure that cleaning the ventilation in apartment buildings should be dealt with by special services. This is indeed true, but this rule applies to common risers, which combine ventilation outlets from all apartments; special equipment for cleaning ventilation is used to service them. The owner of each apartment must clean his pipeline to the common riser independently.
To understand whether the ventilation in your apartment needs cleaning, you need to pay attention to the following signs:
- The ventilation grille is covered with dust and cobwebs.
- A day after wet cleaning, dust appears on the floor.
- Stuffy and stale air in the apartment.
On average, the frequency of ventilation cleaning for preventive purposes is once a year, but under certain circumstances, work must be carried out at least once every 6 months. It all depends on the condition of the system, the presence of dust in the air, and the characteristics of the room. So, for example, in the kitchen the ventilation has to be cleaned more often than in other rooms. If the ventilation system is not working well, in addition to regular cleaning, it is necessary to create additional conditions to improve the ventilation, which can significantly increase its efficiency.
Important! Cleaning the ventilation system with your own hands is only possible on the section of the pipeline exiting the apartment to the common riser.
Methods for increasing system efficiency.
Apartment owners often encounter ventilation problems when replacing old wooden windows with plastic ones. In this case, all window cracks that previously served for natural air flow are removed. As a result, the efficiency of air exchange decreases, the humidity in the apartment increases and mold may appear on the walls, and cleaning the ventilation systems does not help restore a healthy microclimate. The first sign of poor air exchange in an apartment is fogging of the windows..
In this case, you can increase the efficiency of the system by installing vents on the windows or a special ventilation mode. Also the problem is solved by installing supply fan, which will force fresh air into the room.
To create better ventilation of the room, it is worth considering the option of a full-fledged supply and exhaust system. Ideal option an autonomous network of ventilation ducts may become, independent of the general ventilation riser, but it is quite difficult to create such a system in an apartment.
How to clean the ventilation in an apartment.
In order to clean the air duct section yourself supplied with the apartment, you need to prepare the simplest equipment for cleaning the ventilation - a broom, a brush with a long handle, a vacuum cleaner, rubber gloves and a respirator. Having prepared all these devices, you can start working.
- Remove the ventilation grille.
- Use a broom or vacuum cleaner to remove dust from the canal.
- Use a brush to clean the channel up and down, scraping away dirt and grime.
- Once again, vacuum up the dirt particles.
- Wipe accessible parts of the hood with a damp cloth.
- Wash the ventilation grille and install it in place.
For many users, at the stage of cleaning ventilation systems, the question arises of how to clean the ventilation grille. Indeed, sometimes this is not so easy to do. Especially if the grate was in the kitchen and grease and dirt accumulated on it. To effectively clean the grille you can use special means for washing dishes and kitchen appliances. The grille can also be washed in the dishwasher.
Important! Only professionals can completely clean the ventilation in an apartment building, so for this work, contact management company to call technicians.
Disinfection of ventilation.
The ventilation system is a collection of various microorganisms that multiply well in layers of fat and dirt. As soon as there are too many microbes, they begin to penetrate into living spaces, causing various diseases and allergic reactions in apartment residents. To get rid of pathogenic bacteria, after cleaning the ventilation in an apartment building, you need to disinfect.
Do not use professional products at home disinfectants, but germs can be destroyed with ordinary hydrogen peroxide. This compound effectively fights pathogens while remaining absolutely safe for humans. To disinfect ventilation ducts, you need to dilute pharmaceutical peroxide with water in a 1:1 ratio.
Next, pour the solution into a spray bottle and treat the inside surface of the air duct. The solution should be left on the canal walls for 10-15 minutes, after which it should be washed off with a clean, damp cloth. If all of the above actions do not bring the desired results, you should contact professionals who will carry out a more thorough cleaning. ventilation ducts.
Features of professional cleaning.
Professional ventilation cleaning is carried out using special equipment and includes the following work:
- System diagnostics. At this stage, specialists, with the help special camera explore the entire route of exhaust air masses. Diagnostics allows you to determine the degree of contamination of the air duct, detect debris and assess the degree of complexity of the upcoming work.
- Sample collection. At this stage, a special robot collects samples from internal surfaces for subsequent cleaning of air ducts of ventilation systems. Samples are sent to a laboratory to determine pathogenic microorganisms in them. This procedure is mandatory for enterprises Catering.
- Cleaning chambers and shafts. At this stage, using various special equipment, the ventilation air ducts are thoroughly cleaned from dirt, grease and soot.
- Cleaning fan blades. All fans are removed and cleaned with special compounds.
- Z Changing filters. If necessary, specialists change all air filters.
- System disinfection. Professional disinfection helps get rid of all types of dangerous pathogens when cleaning ventilation systems, including Staphylococcus aureus and Streptococcus. Disinfection is carried out along the entire length of the channels and guarantees complete safety of the system after treatment.
What equipment is used.
Professional equipment for cleaning air ducts necessarily includes the following installations:
- Brush installation for cleaning ventilation.
- Installation with filters.
- Vacuum cleaning installation.
This equipment for cleaning ventilation systems is selected individually for each facility. So, for industrial and restaurant chains, the power of the equipment should be maximum. Also, when performing work, professionals can use additional settings for disinfection and various sets of brushes corresponding to the diameter of the pipes.
Today, specialized companies providing ventilation duct cleaning services use two types of cleaning: mechanical and chemical. Professional cleaning It is used in factories, in public catering networks and for cleaning ventilation risers in apartment buildings.
Now that you know how to clean the ventilation in an apartment, you can easily do this work yourself on your section of the utility network.
At the same time, we should not forget that when cleaning yourself, it is prohibited to use chemical reagents that can harm the health of residents.
Comments:
The concept of ventilation was known back in Ancient Rome and meant measures to ventilate the premises. Nowadays everything is much more complicated.
For example, many residents apartment buildings where common ventilation shafts are installed, sometimes very serious problems arise with the air condition in the home.
Why is ventilation needed?
The main task of ventilation is to maintain clean air in residential areas. It must be maintained in good condition and for hygienic reasons. With poorly functioning ventilation, not only the condition of the apartment deteriorates, but also the health of the people living in it. The exhaust air that goes into the ventilation takes with it dust particles, various harmful microorganisms, and unwanted substances contained in the room. Thanks to normal ventilation, it is possible to regulate heat and humidity in the house - with timely ventilation, the excess is removed, preventing the occurrence of mold and rot.
With timely cleaning of the ventilation, the ventilation process is regular, which is correct from a sanitary point of view. With additional equipment of different types of fans, cleaning can be done less frequently, but this does not eliminate the need to regularly clean the ventilation system as a whole.
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How to determine when it's time to clean your ventilation system
If dust or cobwebs have accumulated around the ventilation inlets, then it’s time to clean the entire system.
Pay attention to signs that indicate the need for regular cleaning of the ventilation system. Here are the simplest of them: fine dust, cobwebs, and other debris accumulate around ventilation inlets. In the summer, the room heats up faster, and even after the most thorough cleaning, dust quickly appears. This means that something needs to be done quickly to clean up the atmosphere in the room.
Apartment buildings have the following peculiarity in this regard: since the ventilation system is common, pollution from many apartments enters the common shaft, and gradually it can become clogged.
You can determine when it’s time to clean the ventilation in other ways. Pay attention to drafts that occur when opening entrance doors or windows. If the draft was quite noticeable, and after some time disappeared or weakened, it’s time to call the housing office workers.
The functionality of the ventilation can be checked using a lit match.
You can also use this method to determine the degree of cleanliness of the ventilation: hold a lit match to the ventilation hole. Don't get carried away - if you bring a match very close, and cobwebs have accumulated in the ventilation shaft, it may burst into flames. A similar check can be carried out with a strip of thin paper - the simplest one, newspaper, will do.
Along an even flame that does not deviate towards the decorative grille covering vent, we can conclude that the mine is clogged and needs urgent cleaning. With normal air circulation in houses, the flame leans towards the shaft, and in some cases simply goes out. With this behavior, cleaning the ventilation is not necessary, but if it was last cleaned at least six months ago, it is still advisable to do a little work.
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How to clean the ventilation in an apartment
At first glance, if representatives of utility services perform their duties in a timely manner, there is no need to take measures to clean the air ducts on their own. But in reality everything is somewhat different. The ventilation structure must perform the following functions:
Scheme of ventilation operation in the apartment: 1 - air flow zone; 2 - air flow zone; 3 - air exhaust zone
- ensure that sufficient air enters the room;
- together with the air exhausted during the cleaning process, release harmful microscopic particles that can have Negative influence on people's health;
- perform the functions of a thermal regulator, control the humidity in the apartment.
Cleaning ventilation risers in an apartment building should only be carried out by specialists, but you can urgently clean the air duct in your own apartment yourself. If these actions are ineffective once again the fact that it is necessary to clean the ventilation riser is confirmed. This means that you need to make this request to the building maintenance company as soon as possible.
To clean the ventilation shaft inside the apartment, remove from it protective grille and wash it well. It is advisable to use a detergent that can break down grease: it will create a film on the surface of the grate that will help it stay clean longer. Clean any dirt or debris from the outside of the open hole. If deposits are stuck to the wall, use a putty knife, but do not apply chemicals cleaning.
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Removing contaminants from the inside
Each of the ventilation vents in the apartment must be checked separately. If you are testing using a lighter, apply it to each hole one at a time and check to see if the direction of the flame or the angle of the newspaper is different if a strip of newspaper is used. Deviations may indicate that there is a blockage in the middle of the room. Here a dish brush or a thin steel cable will come to your aid; place it in the vent and thoroughly clean everything from the inside. You can use thin aluminum wire. The cleaning procedure should be carried out along the entire channel. The remaining debris can be removed with a vacuum cleaner. Place his hose in the shaft and try to cover as much space as possible, moving it in different directions.
The industrial method of cleaning air ducts involves the use of professional equipment. It will not only allow you to clearly see the dirt, but also clean the channels more thoroughly and also allow you to disinfect. This cleaning method makes it possible to remove any debris, whatever its origin.
If it is not possible to use professional equipment If you decide to clean it yourself, you must take precautions. Sometimes there are wasp nests with live insects or other equally dangerous creatures inside the ventilation ducts. But when taking on such work, we must remember that cleaning the ventilation apartment building- the responsibility of the owners of the building or the organization that serves it. The average resident should not work inside the main duct. The relevant authorities must promptly clean the central air ducts, and if they neglect their duties, a complaint must be filed against them.
Cleaning the ventilation ducts of an apartment in an apartment building is not difficult. The main thing is to know what, how and where to look for the blockage.
The ventilation scheme for residential and utility rooms in a building is a complex and branched system of channels. You can do the cleaning of simple blockages yourself. To break through a large plug you will need special tools and equipment, so the work should be entrusted to specialists.
What is the ventilation scheme of an apartment building? You will get the answer to this question by reading the next chapter.
Features of the home ventilation system
The ventilation system is extensive and complex circuit location of ventilation shafts. The design of the ventilation circuit is influenced by many factors. The basis that influences the project being developed is the number of floors in the building.
To arrange the premises of an apartment building, 2 main schemes are used:
- Each room in the apartment has its own channel exhaust ventilation. It goes directly to the roof and ventilation pipe. This scheme has been established before. In multi-storey construction, it is not used. This is influenced by a large area of intra-house cubic space for arranging the ventilation installation.
For this reason, in modern construction conditions, this type of air ventilation system is not installed.
- Ventilation is carried out using exhaust openings from each room, which are connected to a common horizontal duct. Here, all air flows are connected and discharged into the attic using a common channel. Air from each hood system, for one entrance, enters a common ventilation duct and is exhausted into the atmosphere.
This scheme began to be used in the Khrushchev era; it is also used in modern construction. This apartment ventilation scheme is considered the most inexpensive and reliable.
The principle of operation of the ventilation system
The installation of the system is carried out in accordance with the requirements of GOST 30494 - 11. According to the standards, the quality level of air masses in the room should not exceed the carbon dioxide level and the humidity of the living room should not exceed 60%, with an air speed of less than 0.2 m/sec.
Previously used natural system ventilation. Special gaps were made above the doors of the rooms for the entry of air masses, wooden windows allowed a sufficient amount to pass through, even in the closed position. Vents were installed on the windows to provide clean air.
New buildings, when installing plastic windows, are equipped with a forced ventilation system. Supply and exhaust circuits with the installation of fans are being installed. These devices allow you to maintain normal levels of humidity and carbon dioxide in your apartment.
But the operating principle of the main ventilation system remains unchanged. The main thing is to carry out routine maintenance on time and remove blockages.
Important. Ventilation checks in apartment buildings should be carried out at least 2 times a year. It is usually carried out in the summer and winter time. But when the first signs of blockages occur, you need to call specialists from the management company.
Signs of a faulty ventilation system in an apartment
Many residential property owners do not take this problem seriously, considering this situation not hazardous to health. It is in vain to believe that the dust and blockage of a mine or canal will “resolve” on its own and you will not get anything for it. There will be a fire due to greasy dust, which ignites instantly and the gas, when burned, will cause injury to the respiratory system. And even without a fire, no one wants to live in a damp room and breathe stale air.
Important. It is necessary to clean the ventilation ducts efficiently, responsibly, and most importantly – regularly.
The main job of flow-out channels is to remove invisible fungal spores, various allergens and microbes from living spaces. Accumulating on a bed of dust, they, with reverse draft, penetrate into nearby rooms, people inhale the dangerous air mixture.
The following “symptoms” indicate that the canals are being cleaned:
- a large layer of dust and cobwebs on and next to the ventilation grille;
- stuffy and humid indoor atmosphere in summer;
- After wet cleaning, a layer of dust settles on the floor and furniture within a day;
- Condensation forms on the windows;
If one of the listed items occurs in an apartment, you need to urgently address the critical blockage of the ventilation duct or repair equipment forced ventilation. Checking ventilation in an apartment by a management company includes air quality measurements and an audit of the air duct system. Preventive inspections must be carried out at least once per quarter.
Who should clean the ventilation in an apartment building - there is no clear answer to this question. If the ventilation grille becomes overgrown with dust, you can perform simple repairs yourself. But serious problems with the system channels can only be eliminated by specialists with professional tools and equipment.
Carrying out work by professionals
Using special tools, professionals from a management company or specialized company will quickly and reliably eliminate malfunctions and severe clogging of the ventilation system. Diagnostics is carried out using a video camera, which will show the location of a garbage plug or a section of a destroyed channel.
After the inspection, using a pneumatic brush machine, remove any dirt or debris from the canal. The brush is launched into the air duct. Under the influence of air pressure, it passes through the pipe and destroys the plug. The brush cleans the channel and, at the same time, using a special liquid, disinfects the ventilation air duct system.
By using any open flame source, you can detect the problem without the use of technology. Bring a burning candle or lighter to the ventilation grille. Pay attention to the position of the fire. If the light deviates towards the channel, this means the draft is good and there is no blockage. If the fire is in a vertical position, the problem must be corrected.
DIY air duct cleaning
How to clean the ventilation in an apartment building yourself is very simple. This work involves performing simple techniques:
- remove and clean the ventilation grille, then wash it in a disinfectant;
- If there is a blockage near the channel opening, it can be easily cleaned with a vacuum cleaner or a broom.
Advice! Before carrying out work, remember the safety rules. Be sure to wear safety glasses, gloves and a respirator.
There are situations when the system is working properly, but humidity and dust interfere with normal life. In such cases, you need to think about purchasing and installing supply valves and exhaust fans. These devices will eliminate the nuisance, and installing them is quite easy and simple. The main thing is to know how and where.
In conclusion, some advice from experts.
Old houses and overgrown ventilation ducts do not always allow the problem to be eliminated by simple mechanical cleaning. There are several simple ways to deal with this situation.
When replacing windows, choose metal-plastic products with double-glazed windows equipped with micro-ventilation. If the windows are already installed, they can be equipped with these devices additionally and for not very much money. Plus, you can install them yourself. The simplest ventilation valve will allow fresh air from the street to enter the apartment.
Check the proper functioning of the ventilation at least once every 3 months, and the grille should be cleaned immediately after a small deposit of dust forms on it. Monitor the humidity in the room. If it increases sharply, it is necessary to call specialists to carry out repair work.
Tsugunov Anton Valerievich
Reading time: 4 minutes
Residents of apartments rarely remember properly functioning ventilation. But if the windows in the rooms begin to fog up, the smell of dishes being prepared in the kitchen spreads freely throughout the apartment, water constantly appears on the walls in the bathroom, the air feels musty and stuffy, then the ventilation system has stopped working normally. In order not to risk the health of the people living in the apartment, the condition of the furniture and other interior items, it is better to eliminate the causes of these problems as quickly as possible. This may require cleaning.
Checking the operation of the ventilation system
Before taking active steps, you should check how the ventilation in the house works. Doing this yourself is not at all difficult.
On the forums it is advised to check using the flame of a burning match or lighter. When the hood is working normally, the flame should deflect towards the ventilation grille. Many people remember similar pictures from Soviet times, calling to check the draft in the gas water heater and the hood in the kitchen.
Representatives of public utility services, especially gas workers, are strongly opposed to the method of checking the operation of ventilation in an apartment with a lighter. IN residential buildings With main gas pipelines, gas leaks are quite possible, which should be drawn into the common ventilation pipe. In this case, you can provoke an explosion combustible mixture, which will lead to the most dire consequences. Therefore, it is recommended to do the check in a safer way.
You need to do the same with all ventilation grilles to get the full picture. Most apartments must have them in the kitchen, bathroom or toilet.
Causes of clogged ventilation
The most common problem leading to malfunctions in the ventilation system is clogging of the air channels. Most often this happens due to many years of accumulation of grease, soot and dust inside them, because most residents of apartment buildings limit themselves to wiping the outer part of the grilles.
In old houses brickwork air ducts are destroyed under the influence of time and water entering inside, seeping from above or evaporating from the bathroom, and fragments of bricks can block the ventilation shaft, interfering with air exchange. There are often cases when unscrupulous residents, wanting to improve their apartment and expand their living space, destroy the ledge in which the ventilation shaft passes, blocking the access of air to the apartments of the other inhabitants of the house. Uninvited residents: birds or wasps also contribute to ventilation blockages.
Residents of multi-apartment residential buildings should remember that cleaning the main air duct should be carried out by representatives of special services. So if the ventilation does not work because it is clogged, you should contact the management company that services the house. The maximum that residents can do on their own is to clean the ventilation ducts leading from the apartment to the common air duct pipe.
How to clean the ventilation
After checking each hood in the kitchen, bathroom and rooms, it will become clear which ducts are clogged. If ventilation does not work in all rooms, most likely the problem is in a common channel and nothing can be done on your own, unless in one room there is a local blockage that can be eliminated. To do this you need:
- Remove the decorative grille and clean it of accumulated deposits. In this case, it is quite possible to use neutral detergents.
- Carefully remove dust, dirt and soot from the walls of the ventilation duct with a scraper and then remove it with a vacuum cleaner.
When cleaning, do not use aggressive reagents that can corrode and damage the walls of the shaft. It is unacceptable for debris to enter the common air duct from the ventilation duct leading from the apartment. When cleaning, you must be careful: sometimes there are nests of wasps or hornets in the ventilation.
Ways to improve ventilation in an apartment
What to do if cleaning the ventilation did not help? It is quite possible that the air circulation inside the apartment itself is disrupted. By understanding the causes of this violation, you can improve air ventilation in your living space.
Poor air circulation between separate rooms
The first step is to repeat the test using a strip of paper, but at the same time open all interior doors. If the paper is attracted under such conditions, then the air circulation between the individual rooms of the apartment is disrupted. To improve it, it is recommended when installing doors to make a gap of several centimeters between their lower edge and the floor.
If the doors are already installed or you don’t want to make such a gap, for example, in a bathroom or toilet, then you can drill a series of holes in the door, sloping inward. Subsequently, they should be decorated with fine mesh. This design will provide ventilation with tight behind closed doors and will not violate the privacy of people in the bathroom or toilet.
Airtight double glazed windows
Another reason for poor ventilation may be the installation of plastic windows with double-glazed windows. In Soviet-built houses, the flow of fresh air from outside was meant through small cracks and gaps in the wooden window frames. Well installed plastic windows in a completely closed state, such replenishment is excluded. As a result, ventilation in the apartment is also disrupted. Therefore, if you are thinking about installing double-glazed windows, then preference should be given to models with a micro-ventilation system.
Already installed double-glazed windows, devoid of such functional features, easy to modify yourself. There are inexpensive ventilation valves available for sale that are installed on the window frame and sash.
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Optimal indoor conditions are created thanks to a properly organized ventilation system. It is important that the amount of air that enters and leaves the room is approximately equal. This will help avoid the formation of drafts. All necessary parameters of the air environment (temperature, humidity and air exchange rate) must be normal so that it is not only pleasant, but also useful to be in such a room. Cleaning the ventilation greatly contributes to this and normalizes the operation of the system.
Reasons for failure of ventilation systems
Even the most productive and efficient system can fail over time. You can determine the deterioration of air circulation if you pay attention to the lack of a sufficient amount of fresh air, also the cause unpleasant odor indoors there may be weak draft in exhaust air ducts, condensation in rooms with high humidity levels, and the formation of fungus and mold. The main reasons that the ventilation system has reduced its functionality are the following factors:
- blockage in the air duct;
- depressurization of a section of the ventilation duct;
- failure of equipment that maintains normal parameters using automatic control.
Most often, system failure is the result of a blockage, in which case it is necessary to clean the ventilation. To avoid such consequences, it is recommended to perform regular preventive maintenance of the entire system. Measures that even the owner of a private home can take include organizing cleaning of the most difficult areas (elbows, entrances and exits of ventilation ducts). To do this, it is necessary to take into account the possibility of access to them when designing the system.
Consequences of dirty ventilation
Cleaning the air ducts of ventilation systems will avoid a number of problems that usually arise if the air has stopped circulating due to blockage:
- breakdown of equipment, since if the performance of the system has not been reduced, but in one of the areas there are obstacles to the free movement of air, then the device will operate at maximum power values, which threatens overload and breakdown;
- Irregular cleaning of ventilation systems causes deterioration in the well-being of people in the room;
- a decrease in the efficiency of the system, along with its load, leads to a decrease in the service life of all ventilation;
- the accumulation of various contaminants in air ducts, as well as layers of substances on their walls, poses a danger due to the possibility of fire.
Technique used
Special equipment for cleaning ventilation can greatly simplify the task. This saves time and effort, but the owners of private housing do not have specialized equipment, which means that it is necessary to attract professionals to perform such work. Cleaning the ventilation of industrial and civil buildings has its own characteristics: the presence harmful substances in the air, the likelihood of waste elements settling on the walls of the air ducts, the intensity and level of contamination of the air flow passing through the ventilation ducts, etc. It is often necessary to clean the ventilation from grease deposits, for example, this is necessary in catering establishments or in residential buildings in the hood above the stove.
Exists whole line ways to remove contaminants accumulated in ventilation ducts. Here, a lot depends on the configuration of the system in the room, which allows you to use different equipment for cleaning ventilation:
- Brush pneumatic machines.
- Flexible shafts for cleaning ventilation grilles, valves and distributors of various kinds.
- Vacuum type installations.
Self-cleaning ventilation from grease and other complex contaminants will require the use of brushes and detergents. If central ventilation systems are recommended to be serviced for preventive purposes several times a year, then with local ventilation (exhaust hood over a grill, stove), ventilation air ducts should be cleaned once a week, otherwise deposits of fatty deposits can lead to a fire.
Maintenance Features
Technologies allow video inspection of the condition of the air duct. Thanks to these devices, a specialist analyzes the degree of contamination of the system. In order to determine the level of harmfulness of the circulated air due to the content of dust, bacteria and fungal spores, a chemical analysis is additionally performed. Cleaning the ventilation and air conditioning system also involves disinfection. This is explained by the design features of the air conditioner.
Condensation regularly falls on the surface of the evaporator (one of the main components of cooling technology), which causes constant moisture in the mechanism. Taking into account the fact that air flows of varying degrees of contamination pass through it, some of the dust from the air settles on the evaporator.
As a result, they are created favorable conditions to maintain the vital activity of various bacteria and fungal spores. In this case, the ventilation systems are cleaned and disinfected.
In addition to the use of special equipment, other methods are used to clean ventilation ducts, for example, the use of dry ice. This is the most gentle method, removing almost any contaminant. Dry ice can be used in systems with air ducts made of different materials, besides, after evaporation it does not leave condensation.
Ventilation cleaning in apartment buildings and other large objects is carried out using this method due to its effectiveness. Along with it, other cleaning equipment may be used in certain areas of particular complexity.
