Corrugation for hoods is a mandatory element of the ventilation system of a residential building

When installing the ventilation system, special structures are used, called air ducts, without which the operation of such equipment is impossible, regardless of its location (residential building, apartment, industrial facility). When installing additional equipment located in the kitchen or bathroom, providing the necessary air circulation, flexible air ducts are used, which simplifies their installation and further operation. Corrugation for hoods - advantages and disadvantages, how to choose and install yourself, as well as how to care for, and at what price you can buy profitably - this is the topic of this article.

Flexible duct (corrugation) made of stainless steel

What is corrugation, and why is it needed for exhaust devices

Corrugation is a corrugated pipe used in the installation of air ducts, installed between the equipment that provides circulation and room air extraction, where they are installed, into the ventilation system of the building or directly into the external environment.

The corrugated pipe for extraction is a flexible element due to its design and production technology. Due to its mobility, the corrugation is used when installing air ducts in hard-to-reach places and in areas located in curved and perpendicular planes of space.In addition, due to their attractive appearance, certain grades of corrugated pipes made of stainless steel and aluminum are used along the entire length of the duct without additional decoration and cover.

Connecting the kitchen hood to the building ventilation system using a corrugated air duct

Corrugated air ducts are used to connect the kitchen hood and axial fansinstalled in a bathroom or a toilet, when installing gas water heaters and heating boilers of various types.

Advantages and disadvantages of corrugated pipes for ventilation

The appearance of freely accessible corrugated pipes had a positive effect on the quality and availability of work, providing the necessary microclimate in the equipped premises. This is due to the fact that when constructing rigid structures, practiced earlier, it was necessary to order from specialized organizations an individual structure (air duct) for a specific room - accordingly, it was expensive and not available to everyone.                                

Plastic corrugation is durable and low cost in comparison with metal counterparts

The advantages of corrugated pipes used in ventilation systems are:

The disadvantages include difficulties in maintenance, expressed in cleaning the surface corrugations, as well as the softness of products made of aluminum, leading to a violation of the geometric shape during careless installation and maintenance.

Technical characteristics of corrugated pipes for extraction

The main technical characteristics of the corrugation used for the hood are its dimensions - diameter and length. The length is specified by the manufacturer and can be a standard size or sold in coils, which allows you to purchase a duct of the required length.

Rectangular corrugation is used in ventilation systems at enterprises and technical facilities

In cross-sectional shape, the corrugation can be rectangular or round. Rectangular models are generally only used in manufacturing facilities. The diameter of the produced air ducts is standard: 10/12 / 12.5 / 15/20 cm, as well as 30 cm or more, but these are dimensions that are not related to the standard of similar products. For the manufacture of corrugated air ducts, plastic and aluminum, stainless and galvanized steel, as well as textiles and polyethylene are used. By their design, such products are of frame and spiral-wound type.

What types of corrugations are used for home hoods

When installing ventilation systems in residential premises, corrugated round-shaped spiral-wound air ducts are used, made of plastic and aluminum, stainless and galvanized steel.

The corrugated aluminum tube is lightweight and has a frame structure

Aluminum corrugated pipe

This type of corrugation can be used for indoor installation and outdoor use. Distinctive features of this type are: low weight and medium-hard frame. The advantages of an aluminum corrugated duct include long service life and the ability to use it at different temperature conditions. The disadvantages are: an increased noise level that occurs in the inner space of the corrugation when the hood is operating at high speeds, as well as the presence of vibration during use.

Plastic corrugation for ventilation

Plastic corrugated air ducts are characterized by low cost and ease of installation.In addition, the advantages of this type include: the minimum resistance to air flow created in the inner space of the pipe, as well as a variety of models that differ in technical characteristics.

Corrugated plastic pipe - a budget option when installing ventilation systems

The disadvantages of plastic corrugation are:

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Other types

Other types of corrugated pipes that are used less often than those discussed above include products made of stainless and galvanized steel.

Stainless steel corrugations look good in a high-tech kitchen

The advantages of such materials are:

Among the disadvantages, it should be noted the high cost and complexity of installation work.

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How to choose a corrugation for a hood - our editorial team's recommendations

When buying a corrugated air duct for an exhaust hood, the main criteria that influence the choice of a particular model are:

One of the options for connecting the hood using a metal corrugation

In addition, the specialists of our editorial office recommend that when choosing a corrugation for an exhaust hood, pay attention to the following nuances:

Installation of corrugated air duct for exhaust

Installation work on the installation of the air duct can be divided into two stages: preparatory and work execution. At the preparatory stage, the brand and dimensions of the corrugated pipe are selected, it is purchased, after which the necessary tool is prepared.

To carry out installation work, you may need:

Work on installing the corrugation on the hood is performed in the following sequence:

Illustration	Action Description
	We make markings for placing the hood and laying the air duct.
	We drill the wall at the exit of the ventilation duct to the kitchen to place the adapter (grate).
	At the prepared place, we install an adapter (ventilation grill), which serves to fix the air duct.
	Using a clamp, we fix the corrugations to the adapter.
	We put the other end of the air duct on the exhaust outlet of the hood and fix it with a clamp.
	The joints of the corrugation are sealed with metal tape.
	If the length of the purchased air duct is longer than is required to connect the hood, then before connecting to it, the length of the corrugation is adjusted, for which scissors or a hacksaw for metal are used.

As you can see from the step-by-step instructions, it is quite simple to install the corrugation on the hood in the kitchen, therefore each user can perform this operation independently, without the involvement of specialized organizations and qualified specialists.

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The nuances of performing the installation of corrugated air ducts

Sometimes, when performing installation work, non-standard situations arise that require separate consideration: the need to connect the corrugation or hide it from the visual space of the kitchen area.

How to connect with each other

The need to connect several corrugation elements to each other arises in the case of an extended section of the air duct, which cannot be completed entirely. For the connection, special inserts are used (indicated by an arrow in the following figure), installed in the inner space of the corrugated pipe in both abutting elements, after which the joints are pulled together using clamps.

Connection of a metal corrugation using a special plastic insert

If the inserts are not available, due to non-standard dimensions of the ducts or for other reasons, then the connection can be made using construction tape corresponding to the material from which the duct is made.

How to hide corrugation in the kitchen

There can be a large number of options on how to hide a corrugated air duct in the kitchen, as evidenced by the following photos, which recorded the solution to a similar problem by designers and tenants:

How to care for the air duct, and when you need to replace the corrugated pipe for the hood

Maintenance of a corrugated pipe is no different from other work related to maintaining cleanliness in the kitchen space, which is expressed in the removal of dust and other suspended particles from the outer surface of the air ducts. In case of severe contamination (tobacco smoke, fat), to wash the outer surface of the corrugation, it must be dismantled and then returned to its original place after performing the necessary work.

The tightness of the connection ensures the maintenance of an optimal microclimate in the kitchen and the extraction performance declared by the manufacturer

It should be noted that after a certain period of time, this is usually about 10 years (depending on the intensity of use of the hood), fat accumulates in the inner space of the corrugation, which cannot be washed off. In this case, it is necessary to replace the air line in order to avoid the dangerous consequences of its use. In addition, when operating such systems, the following safety rules must be observed:

For fastening, connection of corrugated pipelines, various fittings are used that correspond to the technical characteristics of the installed ventilation system

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Comparison of flexible corrugation for ventilation with rigid duct

If we compare flexible air ducts with rigid ones, then the former have a number of indisputable advantages, which include the following indicators:

Air ducts can be made of heat-resistant polymer materials

Where is it profitable and at what price can you buy a plastic and aluminum corrugation for a hood - an overview of proposals

The corrugation for the hood is sold in specialized plumbing stores, as well as trade organizations that sell household appliances and ventilation systems. In addition, such goods can be purchased through online purchases on the Internet, where a fairly large number of companies offer similar products for sale.

The following table shows the cost for different types of corrugation, as of the II quarter of 2018, when sold in retail chains.

The best place to purchase ventilation equipment and components for them are large trading companies, because in such organizations, as a rule, a wide range of similar products is presented, allowing you to choose the right material in accordance with the requirements for it, as well as with the financial capabilities of the buyer.

Flexible air ducts are a reliable and proven element of a ventilation system for domestic and industrial use

Video: organizing the hood in the kitchen

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