PIR Foam HVAC Duct
It is a high-performance ventilation duct product, which is widely used in HVAC systems. The following is a detailed introduction:
Basic Structure: It is a sandwich structured panel. The core is polyisocyanurate (PIR) foam, which is a closed-cell insulating material. The two outer layers are aluminum sheets or aluminum foils.
Panel Structure: Silver Alu. Foil/ PIR Foam/ Silver Alu. Foil
Foam Density: 50-55kg/CBM
Panel Dimension: 3950mm*1200mm*20mm or 2900*1200*20mm
Alu. Foil: 60 or 80 Micron (Embossed)
Fire Rating: Class 0 (BS476Part 6&7) or Class A (ASTM E84)


FAQs of PIR Foam HVAC Duct
Do PIR pre-insulated (PI) ducts require additional insulation after installation?
No. Unlike traditional steel ducts (which need separate insulation layers like fiberglass), PIR pre-insulated panels are factory-insulated with integrated facing. This eliminates the need for secondary insulation work, saving time and labor.
In which scenarios is PIR pre - insulated duct sheet suitable?
It is widely used in commercial buildings such as offices, shopping malls, and hotels, as well as in residential complexes, industrial facilities, healthcare and food processing facilities, and cold storage and refrigeration systems.
How is PIR pre - insulated duct sheet packaged?
-It is usually packaged in plastic film or cartons, with 10 sheets per package.
How to maintain PIR pre-insulated (PI) ducts?
Maintenance is minimal. Regular inspections for joint tightness (to prevent air leakage) and surface damage (e.g., punctures in aluminum facing) are recommended. Cleaning the inner surface periodically (with mild detergents) helps maintain airflow efficiency, especially in hygiene-sensitive areas.
How to make Air Ducts with PIR Foam HVAC Duct
The fabrication process of Pre-insulated Air Ducts






Project Case of Pre-insulated ductwork




Performance Advantages of PIR Foam HVAC Duct


1. Outstanding thermal insulation: The thermal conductivity of PIR foam is extremely low, typically ranging from 0.018 to 0.022W/(m · K), making it stand out among various insulation materials. When the HVAC system is in operation, it can effectively reduce the heat exchange between the cold and hot air in the pipes and the external environment, thereby lowering energy consumption.
2. Excellent fire resistance: PIR material itself has a relatively high fire resistance rating. When exposed to a fire source, a dense carbonized layer will quickly form on the surface of its foam. This carbonized layer acts as an insulating barrier, effectively preventing the flame from further spreading to the internal foam. Moreover, during the combustion process, it hardly produces any harmful gases, has low irritation and low smoke emission, fully meeting the relevant national fire protection requirements and providing a strong guarantee for building safety.
3. Outstanding moisture-proof and antibacterial properties: Due to its special structure and material characteristics, PIR Foam HVAC Duct has excellent moisture-proof performance and can effectively prevent external moisture from invading the interior of the pipe.
4. High strength and durability: Although the overall weight of the pipe is relatively light, the PIR Foam HVAC Duct has high strength. The protective surface layer is closely combined with the PIR foam layer, enabling it to withstand certain external force impacts and wear during daily use.
Application Scenarios of PIR Foam HVAC Duct

1. Commercial buildings: In large commercial buildings such as shopping malls and office buildings, PIR Foam HVAC Duct can meet the ventilation and air conditioning requirements of large Spaces. Its excellent thermal insulation, fireproof and moisture-proof performance can ensure a comfortable indoor environment and comply with the fire safety standards of commercial places.
2. Medical facilities: Hospitals, clinics and other medical facilities with extremely high requirements for air quality and hygiene conditions, PIR Foam HVAC Duct, with its antibacterial and low smoke emission characteristics, can effectively prevent the spread of bacteria and ensure the safety and cleanliness of the medical environment.
3. Transportation facilities : PIR Foam HVAC Duct can be adopted in transportation hubs with dense populations and large Spaces such as high-speed railway stations, subway stations, and airport terminals, as well as in the ventilation systems of transportation vehicles like ships and warships. Its light weight, high strength, and excellent thermal insulation and fireproof performance can not only meet the requirements of space and weight limitations, It can also ensure operational safety and efficient energy utilization.
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