Extractor fan in the hen house: how to make ventilation with their hands

Breeding hens - troublesome, so you need to try it to have maximum impact. Good productivity of poultry, among other activities, provides a range hood in the henhouse. Without clean air into the chickens health is threatened, therefore, reduced egg production.

We invite you to read with the methods and options of ventilation devices in the house. Here are the regulatory requirements for the construction of covered pavilions for domestic birds. Taking into account our recommendations, you will be able to ensure a regular supply of layers of fresh air.

A detailed description of the technology organization ventilation we added visual diagrams, photo collections, video presentation on the proven system of practice and video management.

The content of the article:

  • The role of ventilation in the creation of the microclimate of the house
  • Existing methods of ventilation
  • Four basic system requirements
  • Embodiments henhouse ventilation device
    • Organization of natural ventilation
    • Apparatus mechanical system
  • Making deflector for vent riser
  • Conclusions and useful videos on the topic
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The role of ventilation in the creation of the microclimate of the house

The henhouse, as in any poultry house, there are ammonia vapor dispersed throughout the room. If not supplied from the outside reach the high concentration of fresh air and noxious fumes, its occupants begin to get sick, and in some cases it becomes a cause of mortality.

Birds do not tolerate high temperatures and, therefore, a system that allows air to circulate, for they simply vital.

Without ventilation is difficult to control and humidity. Birds equally bad in excessively wet and in dry room.


During cold weather to produce chickens in the street can not, and in a room without fresh air, they start to hurt. It solves the problem of effective ventilation

Particularly acute this problem becomes in the winter, when all the population resides in a confined space. The air is accumulated carbon dioxide, steam, plus toxic ammonia secreted droppings. Rotting litter and scattered on her food - a good foundation for the growth of harmful microorganisms.

Just open the door - not an option. This way of providing fresh air can create another problem - frostbite ridges. Dangerous for laying hens and extreme temperatures, drafts. Therefore, the presence of competent scheme of general ventilation in the chicken coop in the winter - the question of urgency.

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Photo of

House with a large aviary

Extractor fan in the chicken house is not just for ensuring favorable conditions for the birds. It is necessary for the removal of moisture, breaking constructions

Drying perch and litter

Extractor, intended for removing exhaust air, vapors and condensate provide drying organic bedding and wood perches

Ventilation window for supply and exhaust

Regardless of the type of ventilation system, the coop must be equipped with devices for periodic airing the room with a concentrated location of birds

The windows in the house ventilation system,

The windows in the henhouse arrange so that they can be opened in the winter, but in summer is completely removed to ensure that the outflow and inflow of air. Openings in the case of fine-mesh cover

Winter insulated coop with aviary

Aviary winter henhouse needs as effective, well-organized ventilation as the main house for chickens

The height of the suction device

Location of exhaust and air inlets of the ventilation system in the house should be designed so that even on a perch the birds do not feel the air flow movement

Small house with a natural draft

According to the principle of motivation air movement ventilation poultry house systems are mechanical and natural. The choice of species depends on the number of livestock

Aviary with opening manhole

Lazy for hens can not be regarded as sufficient for ventilation and ventilation holes. They can not provide sufficient heat and polluted air inflow instead of a new portion

House with a large aviary

House with a large aviary

Drying perch and litter

Drying perch and litter

Ventilation window for supply and exhaust

Ventilation window for supply and exhaust

The windows in the house ventilation system,

The windows in the house ventilation system,

Winter insulated coop with aviary

Winter insulated coop with aviary

The height of the suction device

The height of the suction device

Small house with a natural draft

Small house with a natural draft

Aviary with opening manhole

Aviary with opening manhole

Existing methods of ventilation

There are 3 ways ventilation in the room, which contains a poultry:

  • natural;
  • mechanical;
  • combined.

The first - the most cost-effective and is used in the presence of a small amount of chicken. It is a simple ventilation, but it must be arranged according to certain rules. Before you decide to make the ventilation in the hen-house with their own hands, you need to take into account all aspects even during the design of the bird house.

The microclimate in the henhouse

Arranging a chicken coop, it is important to do everything so that there are no drafts. They can also appear when the selected pipe diameters larger than the calculated value. Then there is the air vacuum, provoking this phenomenon

The second method of ventilation - more efficient, but in the implementation simple. If the farm for more than 20 birds should stop on this variant.

Mechanical ventilation is supply, exhaust or combined, ie supply and exhaust. Her suit on large farms. The feasibility of using mechanical systems and in home population size is determined by the house - the space should be designed for a hundred or more chickens.

The combined mechanical system or an air mass flow of exhaust is performed in a natural way, and the fresh air is forced mechanically, or vice versa.

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Photo of

Natural version poultry house ventilation

The organization of natural ventilation henhouse embodiment both the inflow and discharge of air is produced spontaneously, i.e. without mechanical devices

Ventilyato to stimulate movement

The mechanical and combined systems employ fans. They put or inflow, or the hood or inside the coop for air acceleration and subsequent removal of it in the hood

Chimney fan

When installing the fan in the chimney it runs on air discharge into the room, the place of which the rush of fresh air flows

Cooker hood without fan in a brick wall

If air is pumped into the house fan, a mechanical device installed in the hood optionally. Supplied to the premises fresh air will displace exhaust itself in the exhaust port

Natural version poultry house ventilation

Natural version poultry house ventilation

Ventilyato to stimulate movement

Ventilyato to stimulate movement

Chimney fan

Chimney fan

Cooker hood without fan in a brick wall

Cooker hood without fan in a brick wall

Standard methods for the organization and ventilation species described here. We invite familiar with working principle of the exemplary embodiments of systems and devices common rules.

Four basic system requirements

Work effectively coop ventilation system will only be valid, if the basic requirements for this room:

  1. Permanent providing clean air of the house.
  2. No draft, because the inhabitants of the chicken coop is very sensitive to them.

Also to avoid contamination of instant air entering to replace the retracted hood dirty air mass, it is necessary:

  1. The regular removal of manure, spoiled food, dirty water.
  2. Periodic destruction of small rodents. In addition, their presence disturbs the birds, they also serve as an additional source of air pollution.

To make sure that the ventilation is made and is functioning properly, go to the chicken coop and stay there for a while. If you do not feel the lack of air, and you will not start to get a headache, then the test is passed. Otherwise you will have to fix something.

Embodiments henhouse ventilation device

At arrangement of home ventilation henhouse quite possible to manage on their own.

It is important to perform all well to ensure comfortable conditions:

  1. The temperature in the cold season is not lower than 16⁰ for adults and 28⁰ for chickens.
  2. Humidity of 60 to 80%.
  3. air flow rate - 0.8 m / s maximum saving in time and not more than 0.5 m / s in the winter. If you exceed the drafts of these indicators will be playing indoors.

The scheme of ventilation, which in the henhouse, that in other buildings, built on the same principle. Come from the area of ​​the premises and of poultry. Determining the performance of the system, as a basis for taking a moment: for every m² should account for 5 hens.

types of ventilation

Choosing the type of ventilation for your chicken coop should be based on its size and the number of birds contained therein

To solve the problem with the ventilation you need to decide on her appearance. The next step - drawing up a detailed scheme, then the purchase of materials. Then just follow the technology and perform the necessary work.

Organization of natural ventilation

It is based on the parameters of air quality are: temperature, pressure, wind speed. This kind of ventilation can be both non-regulated and organized. Disorganized ventilation occurs through leaky windows and doors, through walls and floors made of air infiltration.

For organized circulation of air (aeration) is necessary to provide a small window, placing it in the ceiling above the roost or directly above the doorway. For traction control window made in the form of windows.

natural ventilation

In its simplest form the natural ventilation of the house Fresh air enters through the open door, out the exhaust through the window

The door to the open aviary will supply fresh air and the exhaust leaves through the window. This method is good for the warm season. In winter, the effect of a slight ventilation. It is unprofitable, because It takes a lot of heat. You have to spend a lot of money to maintain the optimum temperature inside the house.

The most primitive circulation or open system suitable for containing about 9 m², It consists of 2 or ventilating sewer plastic pipe length 2 m, 200 mm cross-section and knee 90⁰. One of the pipes will serve as a hood. It is mounted on the roost at the ceiling level or slightly below.

Rise above the roof it should 1-15 m. Doing a hole of appropriate size is inserted into the pipe and knee gap is blown with foam.

On the opposite side of the same set by a second tube, placing it at 0.5 m below the first level, to the floor must remain 20-25 centimeters. In order not to provoke drafts inflow pipe located away from the perch.

Mounting configured considering the regulatory requirements, it involves the opposite end of the tube outlet of 0.3 m beyond the roof.

On the tube is required to set the valve. To prevent dust and rain into the room through the ends of the pipe makes L-shaped or install umbrellas. You can purchase and install a special attachment - deflectors. Under the influence of the wind, they increase the negative pressure in the air tube. The outside of the pipe shpaklyuyut and color. This will insure the formation of slots in the future.

ventilation scheme for use in winter henhouse

Scheme ventilation specifying all parameters. In the hen house must necessarily be the window. Ideal when it goes to the east, and the door to the west

The most effective air circulation pipe provided with a circle in cross section. Articles made of plastic and metal better insulate, or in the winter condensation formed on the inner walls. Namerzaya it after a while can block ventilation stroke completely.

To secure the plastic ducts they are placed near the rafters, in some cases, in addition fix brackets. Sometimes, instead of pipes arrange the channels of the boards. In this case, you need to pay special attention to sealing.

At very low temperatures, the air baffle overlapping, and if they are not installed, protect the hole from the wind flow using rags. ducts summer open fully.

There is one simple way of ventilation for a small chicken coop:

  1. Constructed of box boards having a square cross-section 200 x 200 mm. Vertically mounted design.
  2. Divide the interior of the channel halves.
  3. Close the top of the box.
  4. Sealed and paint the outer surface of the channel.
  5. Drill holes in the wall.

A channel portion located on the leeward side, will supply air into the henhouse. Exhaust air leaves the duct through the second half.

If the area is a large chicken coop, it makes a more solid ventilation acting on the principle of supply and exhaust. To do this, perform preliminary miscalculations and create an individual project. It is important to choose the right section of the pipe to the air streams do not create drafts.

For ventilation pipes can be purchased ready-made check valves both round and rectangular in cross section. Their structure includes the housing and the corresponding sectional valve. Round valves are made of galvanized sheet metal and rectangular - aluminum sheet.


The check valve will prevent the ingress of cold air in the chicken coop when ventilation is inoperative. Its main element - the valve, which opens in one direction only

Valve flap, whose position is adjusted manually marked by the letter R. If the model is controlled by an electric or pneumatic actuator, the designation is present the letter E or P, respectively. Apply standard round tube with valve can of diameter 250 mm. Expediency their use is conditioned by the scale of the house.

Apparatus mechanical system

The problem of mechanical drawing - to provide the optimum mode regardless of the weather. In an economy of small scale its use does not always justify the costs associated with payment of electricity. Recoup the costs, if chickens are raised only for the family's needs, it is impossible.

blowing fan

The area in which the bird is contained, complete air substitution should occur in 60 minutes. Blowing fan mounted inside the duct and is required to protect the metal net with fine mesh

This type of ventilation supply and exhaust similar method, but used here somewhat improved technology, which consists in applying fans. In some cases, the system is controlled manually, in others - there are special controls.

In the mechanical ventilation circuit for use in winter there are two pipes and channel fan, The location of which depends on the type of circulation. To provide ventilation, it is placed in the inflow pipe. When the device effectively extract the fan should be in the exhaust pipe.

mounting process is nearly the same as in the device of ventilation:

  1. 2 mounted pipes.
  2. Drilled holes for exit of condensate at the end of the exhaust pipe.
  3. Run the wiring to the place of installation of the fan.
  4. Mounted switch. There can be two options: cutout, comprising both the light and the hood or two-button type switch, which allows to control the lighting and extract separately.
  5. Install the fan.

In a simplified version of mechanical indent household axial-flow fan a wall or ceiling in the window pane. The last option is the easiest. Fan try on, cut to the size of the glass rectangle of plywood or OSB.

mechanical ventilation

Mechanical ventilation smoothes fluctuations in temperature. Ventilators disposed at the ends of the room intended for drawing at one end of the henhouse, and blowing in the opposite

Mark and cut out an opening for the fan, is then inserted into the frame member and secured with screws. The resulting hole is inserted the fan itself. Method fastening the latter depends on the application design.

Fan device for drawing in a henhouse

Household axial fan, which is installed in the hood in the lavatories and bathrooms, perfect for a large house. It is able to process a large volume of air mass

Connect included in the system fan to the mains. Wiring better lay outside the henhouse, because within the conditions for this are not entirely suitable. It is important to carefully insulate the wiring.

Adequate ventilation is not required to be kept in working order for a long time. It can work just 2-3 hours a day and this will be enough for effective ventilation.

For ease of administration mounted sensors. At a certain temperature, humidity, and they enable and disable ventilation. Sometimes a pipe in the attic and the fan in the ceiling.

Making deflector for vent riser

Install it on the roof overlooking the vent stack. Deflector operates as follows: it dissects the wind directed toward him, which leads to a decrease in pressure in the device and increase thrust in the exhaust duct.

Self-production of the wind turbine will cost inexpensive, and the effect is impressive. Place it on the roof. Before you proceed to its manufacture, it is necessary to calculate the size.

To calculate the height of the vent diameter multiplied by 1.7. Multiplying the diameter by 1.8 to give the width of the hood, and by multiplying this parameter 1.3, learn the desired width of the diffuser.

Scheme diffuser device for ventilation in the hen house in winter

In the diagram, structural components are typical and standard proportions diffuser pipe diameter (d), cone diameter (d1), the circumference of the cap (d2), the height (H)

Calculate the size, they are applied to cardboard and cut out patterns. Next, scan cap, designs diffuser preforms cylinder and rack transferred to the metal sheet or plastic. Use scissors to cut out all the parts and connect them with a special gun. It remains to establish and fix the deflector.

Itself can be manufactured and the rotary valve. To do this, from the corners of the frame are welded. On opposite sides of the frame is drilled and threaded holes therein axis. Because the pipe lengths are made sleeve welded.

From the steel sheet manufactured locking plate size pipe. It is inserted into a frame fixed to the axle by welding. To control the valve to fix wooden handle axis. That the valve is not closed spontaneously, provide the limiter.

The disadvantage of this ventilation system is the very existence of the pipes in the room. On their surfaces, as with the perch have periodically scraped droppings.

Conclusions and useful videos on the topic

Presentation makeshift ventilation system in the house with a clear demonstration of the design:

Together with the author of the video you can make your own chicken coop ventilation:

Any business can be learned, if you follow the instructions carefully. Make your own chicken coop in the hood with your hands and your bird will feel much better.

Want to tell about how constructed ventilation in your own chicken coop? You know the nuances of its devices, not mentioned in the article? Please write comments in the block located below to ask a question on a controversial and obscure points.

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