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Fabric vs. Metal Ducting: 5 Key Differences for Architects
When it comes to ensuring high indoor air quality (IAQ) in new construction or renovation projects, the choice of an air diffusion system is crucial. Traditionally, metal-based HVAC systems have been the go-to option. However, today, architects, engineers, and contractors are increasingly recognizing the advantages of fabric-based air diffusion. Read on to learn about the five key differences between these systems and their benefits for architects and overall air quality.
1. Materials Matter
Performance: Metal ducts are typically made of steel, while fabric ducts use lightweight textiles determined by the needs of the design or use of the space. Different fabrics are used for different applications, including anti-microbial fabrics for food processing, permeable fabric for swimming pools, anti-static fabrics, and even custom colors or prints that complement the existing interior design.
Longevity: Despite the perception of metal ducts as more durable, fabric ducts often outlast their metal counterparts, even in challenging environments like manufacturing or temperature-controlled storage facilities. They are machine washable and are rigorously tested to ensure they maintain their shape, color, and airflow functionality over time.
Condensation and Corrosion: In high-humidity environments like swimming pools, metal ducts can experience condensation and corrosion issues, posing risks to the structural integrity of the system and IAQ for occupants. Fabric ducts provide constant and even airflow without the threat of damaging debris from rust or chemicals.
2.Cost-Effective Transportation and Installation
Transportation: Metal ducts are bulky and require logistical planning and large vehicles or freight services for transportation to the job site. In contrast, fabric duct systems are compact and can be delivered directly to the job site through reliable worldwide delivery services in just a few days.
Installation: Metal ducts require specialized tools, machinery, and trained teams for installation, which can take weeks to coordinate and schedule. Fabric ducts arrive in standard cardboard boxes and can be easily assembled with standard tools. Installation can be up to five times faster compared to metal ducts.
3. Price Efficiency Over the Entire Process
While exact cost savings can vary based on project specifics, fabric air diffusion systems typically offer significant cost advantages over metal ducts. Estimated savings range from 30% to as high as 70%, when considering total installed costs (transportation, installation, and maintenance). Efficient materials delivered by economical shipping options and a simple installation process combine to save money at every stage of the project.
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4. Versatile Applications and Customization
Fabric ducts are not limited to specific HVAC applications. With a variety of ways to custom-design the airflow, permeability, antimicrobial properties, and fire resistance, they are suitable for various settings, including swimming and sports complexes, food processing, manufacturing, warehouses, laboratories, restaurants, cinemas, and shops.
Fabric ducts can make a bold statement or blend in with a variety of custom options. In public applications, where HVAC ductwork is visible, fabric ducts offer a wide range of customization options that can complement the existing design. Special artwork or logos printed on the duct provide additional branding or identification options. Lettering can send a specific message, and a special print helps enhance the room’s interior design.
5. Lightweight and Space-Friendly Design
Fabric ducts are notably lightweight, making them ideal for temporary buildings, historical structures, or renovation and retrofit applications where space is limited or the structure is fragile. Their inherent flexibility allows them to fit into tight spaces without compromising on air distribution efficiency. This feature is especially beneficial when preserving the architectural integrity of historical buildings is essential.
Innovative fabric duct solutions represent about 10% of the global HVAC market, and their demand continues to grow. Whether a project is small or large, fabric ducts can offer significant cost savings while maintaining high IAQ standards. Architects and building designers can benefit from the flexibility, efficiency, and design possibilities that fabric-based air diffusion systems provide.
Additional Information:
Add fabric to your design — HVAC made for architects
Blog: 3 reasons why architects choose fabric-based air distribution
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