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Fabric Ducts in HVAC

 In this article of HVAC, We will learn about Fabric Ducts in HVAC..

Fabric Ducts

Fabric Ducts in HVAC systems are typically used to reduce sound transmission through the air ducts (e.g., elimination of "sonic boom" from HVAC systems), but can also be utilized in passive venting applications.

They can be used for space conditioning applications, e.g., residential and office buildings.

They also have many technical uses and many associated vacuum challenges.

Designers need to consider a variety of factors, e.g., insulation properties, maintenance requirements, mechanical compatibility, and integration in the installation.

Fabric ducts are a favored option for natural gas and for building automation applications where ductwork systems can be combined with building automation systems.

They can be used for space conditioning applications in large commercial buildings such as multi-family apartments and office buildings.

They can also be used in passive venting applications.

As with other ductwork, consideration should be given to: mechanical compatibility with heat and air conditioners, fire rating, fire and smoke testing, adequacy of materials, drying of the ductwork, compatibility with other ductwork systems, geometrical compatibility, weldability, and installer/installer training.

An important consideration is the relative effectiveness of metal (OEM or aftermarket) and plastic (seals or glue) designs for automotive air conditioning and heating systems.

OEM products will usually last for the life of the vehicle (roughly 20–30 years), while plastic products will fail within five years due to mechanical wear and tear and mechanical failure.

Considerations include ductwork in combination with building automation systems (e.g., building management and energy management systems), space conditioning applications in large commercial buildings (e.g., multi-family apartments and office buildings), and natural gas heating systems for residential homes.

Passive venting will cause the ductwork to allow air in and exhaust air out through vents or "snares" (elevators, fire doors, trash compactor access, etc.).

A minimum of 11 cm of overpressure is required when designing ventilation to ensure safety, and existing ductwork can be shortened if necessary (Figure 2).

In a home ductwork should not be shorter than 9 m, while in commercial ductwork it should not be shorter than 8.5 m.

Sealants and glue are often used for simple ductwork repairs, but they should only be used where temporary repair is required for the owner to continue use of the ductwork and where no external ductwork inspections are required (i.e., plumbing and sewer lines).

Since the past decade, the rise of various types of HVAC systems such as AC and heat pumps has made it imperative for a proper airflow in the HVAC system. The prevailing nature of humidity in many countries, especially India, has reinforced the need for using air-tight ventilation, thus demand for HVAC ducts that possess this property. In 2013, MC1213D glass fiber was one of the major product types that had contributed a major share to the global HVAC duct market.

This product is commonly known as the vacuum fiberglass duct. Such ducts are ideal for areas with dampness and humidity. The tight, straight joints and laminations of this duct material make it easy for air to be pushed into the ventilation system, providing a clean and airy ventilation effect. The growth of the construction industry in various developing and developed countries such as India and China has led to an increase in demand for HVAC systems, thereby driving the growth of the HVAC duct market.

Global HVAC Duct Market: Segmentation

Global HVAC Duct Market: Regional Outlook

The region that is currently dominating the global HVAC Duct market is the Middle East & Africa (MEA). With a share of 40.7% in 2014, the MEA HVAC Duct market is expected to dominate the market throughout the forecast period. The robust presence of major building material and home decoration companies in the region, such as Moen and National Tile, is expected to drive the demand for HVAC ducts in the MEA region in the coming years.

Other countries such as the U.S. and Germany will witness a steady growth in the global HVAC Duct market during the forecast period. The presence of major manufacturers of HVAC ducts in the U.S., such as Kingspan Group and Atlas Roofing Corporation, is expected to drive the growth of the HVAC Duct market in the U.S.

This product is commonly known as the vacuum fiberglass duct. Such ducts are ideal for areas with dampness and humidity. The tight, straight joints and laminations of this duct material make it easy for air to be pushed into the ventilation system, providing a clean and airy ventilation effect. The growth of the construction industry in various developing and developed countries such as India and China has led to an increase in demand for HVAC systems, thereby driving the growth of the HVAC duct market.

What are Fabric Ducts in HVAC?

The term ‘fabric ducts’ is often used interchangeably with ‘fridge doors,’ and that’s because they do perform the same function. However, there are some differences, namely that the insulation, or ‘duct lining,’ does not extend all the way down to the bottom of the door.

Another difference is that the term ‘fabric ducts’ refers to any type of duct in which air flows from a large opening into the home, instead of a smaller door. These types of ducts are usually between 5 and 15 feet wide and 15 to 35 feet long.

Fabric ducts have an amazing abilities to increase your energy conservation. They can save the majority of energy in a home in the long run, making it energy efficient. Fabric ducts are reusable as well. It makes a perfect choice to use for airtight home ducts. If you use high-quality fabric ducts, you can keep an eye on how much energy you are saving each year.

Properties of Fabric Ducts in HVAC : What They Are, and How They Can Be a Point of Control in Energy Efficiency

It’s hard to overlook fabric ducts and the advances being made in energy efficiency. Ducts can now be a source of great energy savings. It’s not just about controlling airflow. Ducts can be a point of control. The purpose of controlling the airflow is to influence the internal temperature of the HVAC system. If the ducts can work efficiently with the HVAC system, efficiency increases and the system is more efficient.

Reduce the number of air leaks in ductwork

When leaks are not closed properly, it causes holes in the walls or components of the HVAC system. These holes allow air to leak and sometimes could be the reason for the refrigerator going out in the middle of the night.

Many times, fabric ducts are a cause of leaks. A better option for air leaks is air duct insulation. Insulation can stop air leakage from occurring. It can be sprayed on the outside of the ducts to stop the air from leaking into the system.

Based on end-use, the acoustics market for fabric duct is segmented into industrial, residential, and commercial. The industrial segment is estimated to account for a prominent market share of more than 30% in 2017, due to the rising need for energy-efficient cooling systems across various end-use industries such as oil and gas, metal and mining, water and waste management, cement and ceramics, chemicals, and food processing. Additionally, rapid urbanization in emerging economies across the world has led to an increase in construction activities, which in turn is expected to boost demand for HVAC equipment, thereby fuelling the acoustics market for fabric ducts.

Water and Waste Management Application to Hold Leading Share in Demand for Acoustics

In terms of application, the acoustics market for fabric duct can be divided into the following categories: water and waste management, food and beverage, healthcare, institutional, aerospace, and others (aerospace manufacturing, education, etc.). The water and waste management application is projected to lead the market during the forecast period. Rise in usage of noise control systems in hospitals, healthcare centers, and schools for the prevention of undesirable signals from the microphones and other parts of the system, in order to reduce the risk of patients getting sick, is expected to boost the demand for acoustics in the water and waste management segment. The healthcare segment is expected to expand at a moderate rate during the forecast period. This is due to a rise in number of hospital openings, for instance, the National Hospital for Neurology and Neurosurgery (NHANSU) was expanded in 2017. However, the aerospace application is anticipated to expand at a significant growth rate during the forecast period. This is due to the rise in demand for noise control systems in aircraft.

Properties of Fabric Ducts in HVAC

Fabric Ducts are the most popular choice in the HVAC industry. Why?

They are durable, flexible, readily available in an array of widths and heights, and, as such, they are often included as part of a cost-effective heating, ventilation, and air conditioning system that can provide more comfort for customers and less wear on existing HVAC equipment.

An excellent example of the versatility of fabric ducting is the fact that a typical room’s heating and cooling needs can be met by simply installing a single fabric duct that connects to an HVAC unit. One’s ceiling can be insulated to support radiant heating for hot water. Alternatively, a single flexible duct can deliver airflow for exhaust ventilation, or it can be installed in a variety of openings to provide mechanical ventilation for equipment at work spaces. Ducts are also available in configurations that fulfill the needs of areas such as bathrooms, kitchens, and garages. Ducts have the added advantage of being flexible and easily installed, and they can be made of a range of materials to match the specified ventilation or electrical requirements of a given system.

For HVAC contractors, the value of fabric ducts is huge. Because of the high number of locations where ductwork is installed, any shortage of HVAC contractors will likely have a direct impact on both businesses and customers. Because of the variety of applications in which fabric ducts can be used, one contractor might be able to supply a sufficient quantity to meet a customer’s needs. On the other hand, there could be other times when a customer may require a larger quantity or an exact same-size ductwork, necessitating a search for a fabric duct contractor in that area.

For anyone considering a fabric duct contractor, a good starting point is to review the online services and websites of any local HVAC contractors to find out about the contractors’ experience in providing solutions for any of the problems with fabric duct systems that might exist. It is also important to review the extensive specification document provided by the fabric duct contractor, which can help prevent the error of relying on third-party descriptions of various systems.

Fabric Ducting Basics

A flexible and economical solution for traditional ductwork, fabric ducts provide the right balance of flexibility and durability. It is important to note that fabric ducts are not always suited to ductwork in accordance with current industry standards.

Due to the range of materials available, fabric duct ducts can be configured in a wide range of ways. The construction of the ductwork determines the method of installation of the duct and its size. For example, new drywall drywall may need to be installed first to permit the ductwork to pass. Installation may also require the replacement of some or all of the existing pipe work in a typical HVAC system. At times, the installation of fabric ductwork is entirely dependent on the HVAC system design.

If the ductwork needs to be installed over existing pipes, the fabric duct may be installed first, allowing the rest of the ductwork to be installed only after the drywall has been installed and primed. For more permanent installation, the drywall will be installed first, allowing the fabric duct to be installed above it.

Customers will often specify fabric ductwork for all of the ducts in an HVAC system. This is usually done to ensure maximum flexibility of installation, and to ensure that the fabric duct is installed exactly in the position that was specified in the design. By installing fabric ductwork at all the ductwork locations, a duct is not only insulated from the outside, but it is also insulated from the inside.

Choosing the correct duct material is also an important aspect of fabric ductwork. If the ductwork is insulated with aluminum or fiberglass, it must also be insulated with a duct material such as FRP, to prevent the insulation from separating from the duct when it is installed. This is particularly important in humid climates, where the ductwork could become overly damp and cause leaks. In a fully insulated ductwork system, the choice of duct material for each location will determine the material and cost of construction.

Fabric Ductwork Market Segmentation

The fabric ductwork market can be segmented based on several key parameters:


· Aluminum or fiberglass


· Thermoformable plastic

Fabric ductwork materials such as aluminum and fiberglass are ideal for the installation of insulated ducts in single-duct systems because they are cost-effective and robust, especially when compared with fiberglass, which is heavier and can cause higher ductwork operating costs in a single-duct system.

The end-user market is categorized based on the material. FRP, thermally conductive plastic, and thermoformable plastic are used as duct materials for installing the ductwork.

Depending on the type of building, people prefer insulation ductwork for the installation of ductwork. They believe that insulation will prevent the ducts from becoming too damp and moist over time. Furthermore, the insulation helps reduce heating and cooling bills.

By industry, the fabric ductwork market is categorized into commercial and residential. Residential buildings require insulation ductwork for the installation of ductwork in the ceiling. Based on the type of building, commercial buildings are classified into offices, malls, warehouses, hotels, and educational institutions. The commercial buildings segment comprises of commercial offices, shopping malls, warehouses, and hotels.

The fabric ductwork market can be segmented based on regional and country level. Key regions analyzed under this research report include North America, Europe, Asia-Pacific, and Rest of the World (RoW). North America is further segmented into the U.S. and Canada.

Application of Fabric Ducts

Complexities are encountered during the execution of HVAC systems. In general, HVACs involve the use of ductwork. Fabric ducts are made from a very thin layer of metallic or plastic material, which is tightly welded to metal or plastic pipes. With the advent of the technological advancements, and greater deployment of HVAC systems, a new market is emerging, as the requirement for fabric ducts is high due to the need for housing of sensors and heating and cooling units. Fabric ducts are utilized in a wide range of applications, such as residential buildings, hospitals, and hotels. These fabrics are also used for environmental monitoring and pipeline monitoring.

A mixture of air is passed through a fabric duct into a structure or to the outside to cool the interior surface. You can use this method to cool a room or for ventilation purposes.

What is the use of a fabric duct?

A fabric duct is mostly used in rooms that require cooling. When you want to make some changes in the existing space, you can simply change the distribution point and install a curtain or a duct. This will allow you to cool your space without disturbing the rest of the house. It is also great for ventilation and decorative purposes.


The fabric ducts are safe to use in buildings, such as commercial spaces, hospital, and different places. You can use these ducts to save money on electricity. There are different type of fabric ducts. The most popular ones include convection, coil, and so on.

You can use these ducts to cool the area. It has multiple uses. The most popular use of fabric duct is for cooling. You can adjust the flow of air in the system and make the air comfortable. It is one of the best inventions in the last century.

The new generation of electric equipment uses fabric ducts for cooling purposes. You can install these type of ducts into a lot of areas. If you are thinking about changing your existing space or you want to make the cooling system, you can install a fabric duct.


Therefore, you can save a lot of money and energy in the process. In the modern world, the trend of making all the changes in a building is decreasing. Therefore, you can save the money and energy and choose a new style. The fabric ducts are not just for commercial spaces. You can also make them into coolers or a ventilation duct. If you want to make your space cooler, you can install fabric ducts. The best thing is that you can find a wide variety of fabric ducts online.

Thus, all you have to do is choose the right type of fabric duct and get the required sizes. You can find a lot of online stores where you can find different types of fabric ducts.

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