Home Article How to make a ventilation system in the cellar in the garage

How to make a ventilation system in the cellar in the garage

What is needed to dry the cellar in the garage

To maximize the use of space, many garage owners arrange there a cellar for storing food. But if not properly ventilated, supplies will quickly deteriorate from high humidity and lack of fresh air. As should be arranged extractor hood for the cellar in the garage and how to make it with their own hands, let us understand in this article.

First, you need to understand why you need ventilation in the cellar. There are a number of reasons for this:

  • If there is no air exchange, condensation quickly begins to appear in the room, which increases humidity. This will lead to deterioration of products, the appearance of fungus and mold.
  • During the cold season air temperature in the underground will be higher than in the garage. In the absence of an exhaust hood warm and humid air will rise from the cellar to the outside and provoke corrosion of iron, which is very dangerous for cars.
  • If not vented, food will eventually become toxic and unfit for consumption. Harmful fumes from the car, smells from various chemical liquids, rubber and other things will soak up the stock.

That is why the ventilation system of the basement garage must provide for the elimination of air from the pit and the flow of fresh air inside.

Types of ventilation

There are several types of ventilation that can be installed in a basement:

  • Natural ventilation in the garage cellar. This option is the most affordable and easiest way to ventilate the room. But in the summer such a device does not work, and in winter you need to constantly check the ventilation ducts and monitor their condition.
  • Combi hood gives you a good air exchange. It differs from the natural method only in that near one of the ducts there is a fan, which provides additional resistance to the air flow. Of course, it should not be on all the time. Use a fan only when you want to ventilate the room. The advantage of a combination hood is that it is equally effective at any time of year.
  • Forced ventilation is achieved through the constant operation of a fan. This method is more costly because it requires constant energy consumption. In addition, to mount the system is difficult enough, and not every owner will be able to do it on their own.

Which option to choose depends on personal preference, the size of the cellar and the amount of food that is in it.

In this video you will learn how to make a dry cellar:

Ventilation in the garage with their own hands. Scheme and methods of ventilation used in garages

Like any other room, the garage needs an effective air exchange. The organization of the correct ventilation in the garage helps to remove formed condensate, removal of exhaust gases and toxic fumes of car care products, traditionally stored there. Ventilation in the garage performs a number of necessary functions, including:

  • removal of moisture generated by rain, snow and wet dirt from the bottom of the car in the garage;
  • removal of harmful to human health gas accumulations (many motorists spend most of their leisure time it is in the garage);

How to Air Condition Your Garage CHEAP. DIY

Ventilation grilles in the door. a simple solution to the issue of access to fresh air in the garage

  • prevention of condensation on the walls and ceiling of the room, as well as in the inspection pit and cellar;
  • timely drying of the car, protection of its elements from corrosion;
  • protection against rust of metal surfaces of tools stored in the garage;
  • Creating a microclimate conducive to long-term storage of vegetables in the garage cellar.

There are several ways to ventilate the garage. How to properly do with their own hands the installation of a particular system, you can learn from the numerous video clips on the Internet.

Scheme of natural ventilation in the garage without a cellar pit: 1. air direction; 2. ventilation holes in the garage door; 3. ventilation box

Natural ventilation. Air movement diagram. The device of ventilation with their own hands

Ventilation in the garage, carried out by natural means, the most common system of ventilation. Given that the device of natural ventilation in the garage is simple and budget-friendly, many are inclined to choose this system.

The scheme of ventilation of the garage in the natural method is that the air flows in and out of the room through the intake and exhaust openings. To correctly choose the diameter of the holes, it is necessary to make a simple calculation.

Scheme of arrangement of natural ventilation in the garage without the cellar pit

For the arrangement of the ventilation of the garage with their own hands, you will need the following tools:

Proper arrangement of ventilation in the garage will protect the metal parts of the car from corrosion

Here is a step by step description of the installation with their own hands:

  • Calculating the area of the ventilation holes. Given the norms, for the area of the garage of 6 x 3 m, the holes should be 27 cm in diameter. If you expect to have two holes, their diameter must be half of the result.
  • Making ventilation holes in the walls, where the ducts from the pipes will be subsequently mounted. The holes should be 10 to 15 cm from the floor of the garage. For these works the peorator is used.
  • On the opposite wall, 10 cm below the ceiling, we arrange the holes to install the outlet pipe. The pipe will extend beyond the roof of the garage. The higher the pipe is over the roof, the more intensive the air exchange will be. The minimum height of the pipe over the roof 50 cm.
  • Once the pipes are installed in the openings, the gaps between the pipes and the wall are sealed with sealant. External pipe openings should be covered with grills to prevent small rodents from entering. Prevent precipitation from entering the pipe by installing a protective cap.

Scheme of inlet and outlet ventilation in the basement

Useful tip! The use of quality grilles to protect the ventilation pipe, will adjust the area of the air inlet depending on weather conditions.

The natural scheme of ventilation in the garage with their own hands to implement quite simple, but it should be understood that during the warm period air circulation will be negligible or absent at all.

Learn more about how to make ventilation in the garage with their own hands, you can from the video example.

Cover the exterior pipe openings with louvers to prevent small rodents from entering

Forced ventilation system in the garage

Forced ventilation system will provide more efficient ventilation of the garage. There is no need to calculate the garage space for such a system because the necessary air is supplied by fans built into the system. Air is supplied and exhausted in enough volume for a garage and cellar with an inspection pit. It should be noted that such ventilation in the garage involves the purchase of expensive equipment and operates in the presence of electricity.

Garage Basement Ventilation System. Garage Airflow Pattern

Effective use of the basement and cellar of the garage for storage of vegetables and canning is possible only if there is proper ventilation. Ventilation in the garage with a basement can be natural, mechanical or combined. Usually, for ventilation in the garage cellar natural ventilation system is enough. Install with their own hands such a system can be made with plastic pipes for sewage. During installation, it is necessary to adhere to the following recommendations:

A Good/Cheap Fresh Air System

  • the scheme of ventilation of the cellar in the garage should provide a minimum number of turns and bends pipes;
  • the exhaust pipe should be insulated to avoid condensation;

For good air exchange, supply and exhaust ventilation pipes should be located in opposite corners of the cellar

  • diameter must be the same throughout the length of the pipes;
  • external pipe inlets must be covered with protective caps to prevent precipitation from entering them.

Before the arrangement of natural ventilation with their own hands is done calculation of the area of openings. Supply pipe begins half a meter above the floor of the cellar and leads out. Exhaust pipe installed under the ceiling of the cellar or basement and extended beyond the roof of the garage. Location of pipes must be in opposite corners of the cellar.

In a cellar with the right microclimate the harvested crops will be preserved intact

The most correct choice of ventilation of the cellar and basement in the winter season, is to use the forced method. These rooms have almost no air exchange and need effective ventilation with the installation of mechanical ventilation. Such ventilation will contribute to normal air exchange and create the microclimate necessary for the preservation of products.

On how to make ventilation in a garage with a basement, you can understand, watching a video instruction on the device ventilation.

Recommendations for cellar ventilation

Before you begin installing any type of ventilation system, you need to familiarize yourself with some of the recommendations that must be considered during the design and construction work:

  • It will be right if the ventilation system is started during the construction of the cellar. in this case the channels are left in the masonry walls, into which the ventilation pipes are installed.

Not to wonder later where to install the pipes, ventilation should be included in the project cellar at once.

  • Pipes installed must be of the same diameter to allow for uniform air circulation. If you want to speed up the evacuation of stale, saturated with damp air, the exhaust pipe can be taken with a slightly larger diameter than the supply pipe. Under no circumstances, however, should the exhaust stack be smaller in diameter than the supply stack, as the air may become trapped inside the room under these conditions. This will adversely affect the food stored in the cellar, but the main danger is the same in another. there is a certain threat to human health when it comes down into the gassy underground room.
  • Never place both vents next to each other, as the room will not be well ventilated. They must be installed on opposite walls or in opposite corners. This is done to ensure that fresh air flows through the entire room and pushes stale air out into the exhaust pipe before it goes outside.
  • Exhaust pipe hole should be mounted under the ceiling, as the waste warmer air rushes upwards. This positioning allows the air to be purged constantly without stagnating in the ceiling area, which means that the food can be preserved properly.
  • The exhaust vent pipe is raised above the ridge or mound above the cellar ceiling by at least 1,500 mm to ensure good draft.
  • For the ventilation system is often used plastic pipes are designed for sewage. For small rooms this diameter is usually sufficient.
  • If the cellar is located under the garage or other business premises as an exhaust port, you can use the entrance hatch.

In this case, two dampers are made, one insulated. winter one. And the other is in the form of a frame, with a fine grid attached to it. The grid is necessary to prevent small rodents from penetrating into the basement.

insulated hatch removed in the summer for constant ventilation of the cellar. If the room above the basement is insulated, then in the winter time you can conduct ventilating sessions.

  • Installing ventilation in the cellar under the house or garage you need to consider. that bends and curves of both supply and exhaust pipe was as little as possible. Ideally, it is better to achieve such a location that the pipe is absolutely straight.
  • The pipe along its entire length should have the same diameter without expansion and contraction.
  • Outdoor air inlet pipe, if it is located low above the ground. be sure to be covered with a grid ( lattice) to protect the cellar from penetration of rodents or other small animals and birds.
  • It is recommended to install air inlet and outlet air regulating dampers in both pipes. They help to dose the incoming cold air in severe frosts and, accordingly, the outflow of warm. To maintain the right microclimate in the cellar.
  • If the chimney caps are perfectly vertical, they need to be protected from falling into the inside of the atmospheric precipitation, dust and debris by placing a metal umbrella or a deflector on top.

When using a deflector, an area of rarefaction is created around it, and this phenomenon helps to increase the draught.

Types of ventilation systems in the cellar

There are two basic types of ventilation systems. natural and forced. A choice of one or another option depending on the size and layout of the basement.

Natural ventilation system

Natural ventilation is based on differences in pressure and temperature indoors and outdoors. Efficient operation depends largely on the correct location of pipes. So, the air inlet should be at a height of maximum 250 ÷ 300 mm from the floor, and the exhaust. below the ceiling at 100 ÷ 200 mm. Place it even lower is not allowed, otherwise the ceiling will start to get wet.

This ventilation system may clearly be insufficient for a large volume of the cellar or if it consists of several rooms.

In the simplest forced-air systems, the fan is installed on the exhaust duct. Thus, an artificial vacuum is created in the room that promotes the active flow of fresh air into the cellar through the air intake. The power of the selected fan will depend on the volume of the room.

There are also other ways. the fans are installed both in the supply and in the exhaust duct. This is true in voluminous, complex configuration of the basement room. One must have the help of a specialist to calculate the consistency of air inlet and outlet, i.e. channel diameters and capacity (productivity) of fans installed in them.

  • At the end of the exhaust duct installed canopy.
  • To ensure proper ventilation, it is necessary to place the upper end of the exhaust vent above ground level.
  • The radius of the ducts should be the same.
  • When calculating the diameter of the pipe use the following formula: for every 1 m3 of cellar below the ground there must be 20 cm2 of ventilation pipe diameter.

This approach is used both for natural ventilation and forced ventilation. To properly install the ventilation, you must first make a calculation, namely, set the area of the cellar and the rate of air flow. This ensures proper air exchange and will allow future complete renewal of the air in the cellar every 30 minutes. This level of circulation can be achieved by placing 25 cm of duct diameter for every 1 m2 of space.

Important! After the installation of any type of ventilation in the pipes should not be unnecessary openings through which the air will penetrate into the room. Slots significantly reduce the work of ventilation, so damp air can penetrate into the garage. Therefore, condensation can settle on the parts of the car, which is very undesirable.

In principle, the device of ventilation in the cellar. it is a job that can be done by the homeowner with a great desire and the usual non-professional tools. Start with the design. basic blueprints, calculations of materials, determine the peculiarities of the ventilation system at different temperature conditions.

Step Check the operation of the system

Ventilation with one pipe

Once the system is installed, make sure it is effective. First of all, there should be no odors coming out of the garage. How well does the extraction (natural), check the “old-fashioned” method. bring a sheet of loose paper to the exhaust port, if it is attracted. the draft is normal.

Whether there is enough oxygen in the air is checked by lighting a match or a candle. Good flame indicates the presence of enough oxygen, weakly burning or fading. there is too much carbon dioxide in the air.

Advice. If you decide to arrange a ventilation system in the cellar with their own hands, first get advice from specialists. Do not neglect the drafting of the system, because in the future it will affect the microclimate of the basement.

When installing a ventilation system in the garage cellar, it is recommended to lean towards a mechanical. Forced air supply and exhaust will provide a quality preservation of products, and will not allow the deterioration of metal surfaces in the garage.

Organize ventilation of the garage cellar

As an example we take a 6 m long garage with a separate 2 x 3 m basement and inspection pit. Here it is important to observe one condition: the air of the garage room and ditch should not penetrate into the vegetable storage, as suggested by the schemes of some online resources.

Recommendation. Route separate air ducts into the cellar that are not connected to other rooms.

How to do the correct extraction from the basement in the garage:

  • Run two vertical intake and exhaust ducts through the floor into the underground cellar.
  • Inflow pipe lowered to a height of 10-20 cm above the floor, the second end to the street by the shortest route.
  • Exhaust duct begins under the ceiling of the cellar, passes through the car park and rises above the roof (height 1.5-2 m).

Put a bypass tube from the inspection pit in the vegetable cellar is not allowed, it must be supplied only with fresh air

Advice. The transit section of the vertical pipe that crosses the garage room, be sure to insulate. Otherwise heated and moist basement air will release condensate from contact with the cold walls. You will not get the result you want. moisture will flow back into the storage.

Air ducts mount from the same gray plastic pipes with rubber sealing rings in the sockets. An alternative. asbestos cement, but it is more difficult to put because of the decent weight and lack of factory fittings.

Supply air duct into the basement in two ways:

  • Skip ventkanal through the basement ceiling in the box, turn the knee and go out through the wall (height 200-500 mm from the ground);
  • Pass directly through the basement wall, turn upwards and vertically lead the pipe to the street through the blind area.

This is what the movement of air flows in the box and the cellar (top view)

The second option is cheaper if you put the duct during construction, when the lining around the building is not. In a finished garage is better to implement the first way. to carefully drill a wall with a floor overlap and with his own hands install the inflow ventkanal.

Do not forget to insulate the upper section crossing the box, otherwise it will “sweat” from the outside. An example of the arrangement of a complex garage ventilation look at

Natural system

Most often in small private garages install such ventilation. It is easy to install, so it is not difficult to build it even with your own hands from the materials available. However, it is not suitable in all cases, and you should not lean towards it just because it is easier and cheaper. It is worth weighing all the pros and cons.

Advantages and disadvantages

There are many positive aspects of natural ventilation. Among them:

  • Independence and energy independence. the system works by itself, due to the laws of physics, and requires neither special configuration and regulation, nor power from the mains;
  • ease of installation. even one person can easily cope with all phases of installation and adjustment;
  • No special tools are required for the work. as a rule, everything is already in the house;
  • It is not necessary to buy extractors and other mechanisms, as they are not included in the design;
  • No noise. since no devices are used, the ventilation does not make any noise during operation.

All of these advantages incline many garage basement owners toward installing such a design. However, you should pay attention to the fact that it has quite a few disadvantages:

  • Lack of ability to regulate the system;
  • It is possible to install a grid that filters out only large debris and does not let birds and insects inside, but dirt and dust will still get through it;
  • In summer, the air circulation is practically stopped due to the same temperature inside and outside;
  • In winter the holes can be clogged with ice, snow or frost, and cleaning of the pipes is required;
  • Lack of additional options. for example, you can not cool or heat the air.

Rules of installation

To properly make ventilation in the garage cellar, you need to install pipes in the right places. Since no technique is used for the inflow and outflow of air, it must move itself, and this requires the correct location of all elements. You will need two pipes: one for exhaust air to the street and one for supply air to introduce new air from outside.

make, ventilation, system, cellar, garage

They can be made of different materials. The best choice for this situation would be asbestos or galvanized pipes. However, other options are also possible. they can be selected based on your own preferences and needs. Not a bad choice would be instances of plastic, a little worse. from tinplate. Here are the main positive aspects of plastic pipes:

  • increased tightness;
  • The highest duration of operation;
  • slippery surface, not allowing debris and dirt to catch on it;
  • low weight and ease of cutting;
  • resistance to aggressive influences of the external environment;
  • resistance to mechanical damage.

In addition, such pipes have a relatively low price. If you want to save money, this is the best option available.

Installing the exhaust pipe, you can choose one of the following mounting schemes:

  • Wall-mounted. part of the system is installed horizontally inside the wall and then led outside the building;
  • Through. holding the design through the floor of the garage to its ceiling, attic and through the roof to the roof.

Its length can be determined individually, based on the size of the room and considering that it will protrude above the wall at a distance of half a meter to a meter.

To increase the draught, you can put a deflector on the exhaust pipe. a special detail that also prevents debris and dirt from getting inside. When selecting it, remember that its outer diameter should be twice the diameter of the pipe, and its body will be installed inside it. Having found the scheme, you can make it yourself from metal or plastic cone-shaped.

Supply pipe is installed so that its lower part will reach the floor. On its outer cut will also need to install a grid, so that mice and rats do not get into the room. Instead of it you can also put a metal mesh with a fine cross-section. When selecting the diameter of the pipe, it is worth remembering that there are 15 square millimeters of cross-sectional area per one meter of room.

make, ventilation, system, cellar, garage

Calculation of ventilation air volume and duct cross-section

The vast majority of motorists do not bother to calculate. studied the schemes on the Internet, watched a video and installed the air ducts from the pipes inside the house sewer Ø100 mm. If you want to delve deeper and calculate the parameters of the garage ventilation system, we suggest you read the requirements of regulatory documents:

  • Air exchange inside the boxes is regulated by the regional document MGSN 5.01-01 “Parking lots for cars”. Paragraph 3.Clause 17 states: The minimum air flow volume per car is taken as 150 m³/h or the air medium must be renewed twice.
  • Departmental regulations VSN 01-89 put forward the following requirement for inspection pits: the multiplicity of exhaust from the ditch should be 10.
  • Norms of air exchange for vegetable storage are prescribed in p. 8. 1. 4 NTP-APK 1 documents.10.12.001-02. The volume of inflow and outflow equals 3.5 m³/h for each 100 kg of potatoes and 7.5 m³/h per 100 kg of other vegetables.

Reference. The air exchange ratio indicates how many times per hour the supply air updates the cubicle volume.

It is easiest to show the calculations on the example of the garage in the drawings above. We preliminarily determine the internal volume of the room. 95 m³, ditches (6.6 m³) and the cellar (12 m³). Further calculation is performed as follows:

  • According to MGSN 5.01-01 we multiply the value of the volume of the box by the multiplicity of 2, we get the air flow of 95 x 2 = 190 m³/h. The figure meets the minimum requirements for 1 machine 150 m³/h.
  • The rate of exchange in the pit is taken as 10, the amount of air. 6.6 x 10 = 66 m³/h.
  • Let’s assume the cellar holds 400 kg of potatoes and 200 kg of other vegetables. Calculating the ventilation airflow: 3.5 х 4 7.5 x 2 = 29 m³/h.

Note. Tenfold exchange in the duct should be laid in the permanent repair work from the bottom of the car (as in the car service center). Under normal conditions, a twofold renewal of the air medium will suffice: 6.6 х 2 = 13.2 m³/h.

Knowing the flow rates in each compartment of the garage, it is not difficult to figure out the cross-sectional area of the supply and exhaust ducts using the formula:

  • F. channel cross-section in meters square;
  • L. inflow volume (flow rate), m³/h;
  • ʋ. speed of air flow in pipes and grids, for natural exhaust it is recommended to take 1 m/s.

For an ordinary garage, where the ditch is used periodically, we include in the calculation of the minimum flow of 150 and 13.2 m³/h. Let’s sum up these values and determine the cross-sectional area of the ventilating duct: F = 163.2 / 3600 х 1 = 0.045 м². Using the formula for the area of the circle we find the diameter of the air duct. 240 mm. With a small stretch it is allowed to use two plastic pipes Ø150 mm.

Example: a grid with the dimensions 230 x 230 takes 0.053 square. м., and its free cross-section is only 0.02 square

Digit 0.045 m² also shows the required cross-sectional area of the supply grille, which is approximately 50 % less than the real size of the product. So we take the cross-sectional area of 0.045 х 2 = 0.09 m² and by fitting we find out the dimensions. 0.3 х 0.3 m or 300 x 300 mm. Such a grid is too large, it is better to make 2 openings in the wall and put two grids with dimensions not less than 150 x 300 mm.

The size of the basement air ducts is calculated in a similar way: F = 29 / 3600 x 1 = 0.008 м². The diameter of the pipe will come out 0.1 m or 100 mm. On the nuances of installing ventilation in the garage and the passage of the pipe through the ceiling see the video:

The installation of the ventilation system: the basic steps

When installing the ventilation system does not require a large number of tools. Required:

  • the pipes themselves;
  • fixing clamps;
  • self-tapping screws and dowels;
  • grids for protection;
  • deflectors or hoods;
  • drill and hammer.

Air is extracted through the exhaust duct, the reception opening of which is located in front of the door

To fix the pipes, holes are punched in the walls, fasteners are installed. Duct sections are assembled on the floor and then the construction is fixed in prepared fixings. All joints must be sealed with a special tape or sealant.

The process of arrangement of ventilation in the cellar in the garage, as can be seen, is not complicated. The optimal variant is considered to be a system created at the stage of construction. But if there is no such, it is not very difficult to assemble the entire construction by yourself.

Combined ventilation in the garage cellar

It is possible to increase the efficiency of natural ventilation by installing a lamp in the exhaust pipe, which will heat the air and increase the draft in addition. You can use a candle as an alternative to a light bulb, in which case you can do without electricity. But it is still better to install a fan. This is the best way to turn a natural ventilation system into a combined.

As you guessed, the combined and natural ventilation in the garage cellar differ from each other only in the presence of a fan on one of the ducts. When turned off, the fan will create a little extra resistance to air flow. But by turning it on, you can provide effective ventilation of the cellar, regardless of the time of year and weather conditions.

Forced ventilation in the garage cellar

Forced ventilation in the garage cellar

Forced ventilation in the garage cellar is provided by the continuous operation of the fan. Let’s consider the advantages and disadvantages of such a system:

  • advantages:
  • stability of operation;
  • The possibility of adjusting the efficiency, air heating;
  • Ability to use an air filter.
  • constant energy consumption;
  • noise;
  • installation complexity;
  • the considerable cost of some components;
  • the presence of wearing and breaking parts.

Forced ventilation follows the same principles as natural ventilation. After all, natural air movement should help, not hinder fan operation.

Forced ventilation in the garage cellar can provide a duct ventilator

Particular attention should be paid to safety when installing forced ventilation in the garage cellar. This applies to laying electrical wiring, installing switches and fans. It is best to choose ducted fans.

As for filters, air heating and adjusting the operation of the hood. all this requires additional costs and is done on an as-needed basis.



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