FAQ

Yes, Prihoda textile air ducts are highly hygienic and designed to ensure clean and healthy indoor air. Thanks to their smart design, they are often more hygienic than traditional metal air ducts.

Easy and thorough cleaning

Prihoda textile ducts are modular and fully removable:

• Equipped with zippers for quick disassembly
• Machine washable at 40 °C using standard detergent
• No chemical cleaning agents required

This prevents the accumulation of bacteria, mould, and allergens, significantly improving indoor air quality.

Antibacterial option for sensitive applications

For sectors such as the food industry, healthcare, and cleanrooms, an option with silver ions is available:

• Permanently embedded in the fabric
• Inhibits the growth of bacteria and mould
• Works continuously without chemical additives

Certified and safe materials

All materials comply with OEKO-TEX® Standard 100 and are free from harmful substances. Cleanroom-approved fabrics are also fibre-free (non-shedding) and suitable for environments with stringent hygiene requirements.

Conclusion

Prihoda textile air ducts combine hygiene, ease of maintenance, and durability. Their washability, antibacterial options, and certified materials make them a reliable solution for healthy air distribution.

Prihoda textile ducts are highly versatile and can be used for cooling, heating, ventilation, and extraction.

Thanks to their flexibility in design and air distribution, they provide added value in a wide range of applications:

• Warehouses, factories, offices…
• Sports halls, swimming pools, theaters, or cinemas…
• Restaurants, bars, kitchens…
• Temporary installations

Comfort, energy efficiency and even air distribution are the key features of Prihoda textile ducts. One system, endless possibilities.

Prihoda textile air ducts can maintain their shape even when no air is flowing through them, depending on the selected configuration.

Thanks to helix reinforcement or shaping rings, the duct remains neatly round even in a non-inflated state. These reinforcements support the structure and ensure a clean, stable appearance.

There are three available options:

• Shaping rings: Plastic or metal rings installed at regular intervals inside the textile duct.
• Helix: A spiral wire (typically made of steel or plastic) running along the entire length of the duct.
• None: The duct collapses when no air is flowing through it.

This allows you to choose the configuration that best matches the visual and functional requirements of your project.

Prihoda is the world’s first company to manufacture textile return air ducts. Our innovative solutions combine functionality, efficiency and ease of installation.

Key features of Prihoda textile return air ducts:

• Square and round shapes:
  1. Square: The walls are sufficiently tensioned using tensioners to ensure a stable structure.
  2. Round: Helix reinforcement and tensioners provide a perfect shape and robust support.
• Easy installation and removal: Designed for quick installation and dismantling without hassle.
• Air return via perforations: Strategically placed perforations ensure efficient air return in HVAC systems.

This is certainly not a short-term solution. Textile ducts, made of good quality, can last at least 15 years or more. Light fabrics (around 100g/m^2), with maximum lifetimes of around 50 washes, or the cheaper polythene films (which are more susceptible to tearing), have a shorter lifespan.

In a well-designed textile duct, without the use of form rings, a constant pressure is almost always present. The perforations are calculated on the average value of the static pressure. In other words, the duct is designed based on the external static pressure of the device connected to it. The use of plenums or anti-turbulence cones provide additional durability, which should definitely be taken into account. Pressure loss due to friction is usually minimal given the falling air velocity in the textile duct. The minimum requested pressure is 50 Pa, with light fabrics it is 20 Pa.

All our products are easy to clean. Most of our fabrics can be washed in a washing machine. Air ducts with perforations (holes larger than 4 mm) will never get completely clogged by dirt. Our channels with micro-perforations have significantly longer periods (more than double) between maintenance cycles than permeable fabrics. Usually, cleaning is only necessary for hygienic or aesthetic reasons. Each part of our system, separated by zips, has a unique washing label indicating its position and any washing instructions.

Mould can form on any type of material when it is damp and not ventilated. This also applies to most of our fabrics, including those with antibacterial finishes. Only one of our fabrics - NMF - is mould resistant. Never store damp air ducts or keep them outside for long periods of time, especially in humid environments. Mould can leave indelible marks on the fabric.

When permeable fabrics are used, the fabric will still act as a filter for the remaining air flowing through. If the contamination of the fabric increases, the pressure loss increases and the air flow will decrease. This is why textile ducts should also be washed. We therefore consider the use of perforations to be the most appropriate solution. Although perforated fabrics do not function as filters, they do not affect any pressure loss or number of washes required. We therefore distribute distribution systems, not filter systems.

Our fabrics are certified for fire resistance according to EN 13501-1 and EN 45545 (in different classes, depending on fabric and purpose) and according to the US UL. Prihoda has a certified quality management system according to ISO 9001, an environmental management system according to ISO 14001, an OHS management system according to ISO 45001 and an EPD environmental impact certificate. Prihoda has also received Oeko-Tex certification for its textile channels.

Prihoda textile ducts are available in Belgium, France and Switzerland.