Polyisocyanurate (PIR) Air Duct Panel
Polyisocyanurate (PIR) Air Duct Panel is a high-performance, integrated solution engineered for heating, ventilation, and air conditioning (HVAC) duct systems. It revolutionizes traditional duct setups by combining thermal insulation, structural rigidity, and protective barriers into a single, factory-manufactured panel-eliminating the need for separate metal ducts and loose insulation.
At its core lies a closed-cell PIR foam layer-the panel's performance backbone. This foam boasts ultra-low thermal conductivity (0.022W/m·K) and a high R-value (R-5 to R-8 per inch), which minimizes heat gain or loss for conditioned air. Whether distributing cooled air in summer or heated air in winter, the core ensures consistent temperatures, cutting HVAC energy consumption by 20–30% and reducing long-term utility costs. Its closed-cell structure also repels moisture (water absorption <1% by volume), preventing mold growth, corrosion, and insulation degradation-common pitfalls of porous alternatives like fiberglass.
Sandwiching the PIR core are durable, airtight facings, typically made of aluminum foil/sheet (most common for commercial/transport use) or galvanized steel (for heavy-duty industrial settings). These facings act as vapor barriers, limiting air leakage to ≤2% (per EN 1507 standards) via precision tongue-and-groove or flange joints-far less than the 5–10% leakage of poorly sealed metal ducts. The facings also enhance rigidity, allowing the panel to resist sagging, vibration (critical for high-speed transport like bullet trains), and physical damage during installation or use.
Safety is a key design priority: PIR foam is inherently fire-retardant, meeting global standards such as Class 0 (BS 476 Part 6/7) and Class B1 (GB 8624). It self-extinguishes when the ignition source is removed, forms a flame-blocking char layer, and emits minimal toxic smoke-essential for public spaces (hospitals, malls), industrial facilities, or rail vehicles.
Lightweight (2–4 kg/m², 70% lighter than insulated metal ducts) and slim (common thicknesses: 10–50mm), PIR Air Duct Panels fit easily in tight spaces like building ceilings, train interiors, or retrofits. They also offer hygienic benefits: non-porous facings prevent bacteria/dirt buildup, meeting cleanroom or food processing standards, and improving indoor air quality.
Eco-friendly variants further enhance its appeal-many use CFC/HCFC-free foam (no ozone depletion) and recyclable aluminum facings, aligning with LEED or BREEAM green building certifications. With a 20–30-year lifespan and minimal maintenance needs, PIR Air Duct Panels deliver long-term value, making them a preferred choice for modern, efficient HVAC systems.
Xiamen UNT Duct Technology Co., Ltd. was established by several co-founders who have more than 15 years experience in PU & PIR Foam Industry. It is conveniently located in the beautiful seaside city of Xiamen, China. We specialize in the research and manufacturing of UNTDuct polyurethane (PU) / polyisocyanurate (PIR) System for HVAC air distribution and PU insulation boards for building.
UNTDuct System is like no other insulated ductwork system. It is the most advanced and innovative sy stem of pre-insulated air distribution ductwork available in China. The UNTDuct System is proven to be innovative product that is easy to install and maintain providing a new perspective in the field of air distribution.
UNT provides specialized and comprehensive training programs to appointed distributors and clients in order to ensure that their fabricators carry out the fabrication of UNTDuct Pre–insulated Ducting System for any Project directly at site, assuring fast and more accurate execution of duct installation requirements. UNT also provides technical support to appointed distributors and clients in order to ensure its satisfaction throughout the consistent quality of ducting fabrication and installations supplied.
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