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PIR Air Conditioning Duct Boards

PIR Air Conditioning Duct Boards serve as a premium high-performance solution for modern HVAC systems. Featuring an integrated sandwich structure with aluminium foil facings and a rigid PIR foam core, they deliver superior performance compared to conventional galvanized steel ducts that demand on-site insulation treatment. Suited for diverse engineering projects, these duct panels are widely specified for hotels, office buildings, airports, hospitals and other commercial and public facilities.

Fire Performance and Key Ratings

Exceptional fire performance constitutes the core strength of these duct panels, validated by independent third-party testing.

Certified Fire Ratings

High-performance PIR pre-insulated duct panels achieve a Class 0 fire rating to BS 476, while complying with the B1 grade outlined in GB 8624-2006. In line with European standard EN 13501-1, the panels attain B-s1,d0 classification, indicating limited flame propagation and low smoke emission.

Combustion & Smoke Properties

Specially formulated PIR panels release minimal toxic fumes during combustion and prevent dense black toxic smoke formation. The material can reach a smoke toxicity index below 4.5, satisfying the requirements of British Naval Engineering Standard NES 713.

Key Properties of PIR Air Conditioning Duct Boards

Beyond reliable fire resistance, the panel's sandwich structure offers a full range of remarkable performance benefits:

Superior Thermal Insulation

The rigid PIR foam core provides outstanding insulating performance with an ultra-low thermal conductivity of 0.020–0.022 W/m·K. It improves overall energy efficiency and maintains stable airflow temperatures within the duct system.

Lightweight yet High Mechanical Strength

Benefiting from the integrated sandwich construction, the panel is considerably lighter than traditional metal ductwork without sacrificing solid compressive and tensile strength. Typical test values show a compressive strength of 202 kPa and tensile strength of 423 kPa.

Wide Operating Temperature Range

The material accommodates a broad operating temperature range. The maximum continuous temperature of conveyed air inside the duct stands at around +80°C, and specific variants are capable of withstanding ultra-low temperatures down to -265°C.

Construction Efficiency and Cost of PIR Air Conditioning Duct Boards

Integrated prefabricated panels enable one-step cutting and assembly to greatly save construction time:

Higher Labor Efficiency

For equal duct area: traditional insulated galvanized steel duct achieves 18 m²/person/day; on-site assembled PIR panels reach 30 m²/person/day. Installation time is reduced 40%–60%, with labor costs lowered by 45%.

Balanced Overall System Cost

While panel unit price is higher than steel sheet, secondary insulation, moisture barriers and numerous hangers are omitted. Total duct system cost is comparable or even 8% lower.

Optimized Shipping

Foldable packing boosts loading capacity to 2.3 times. Inland and ocean logistics costs fall by 50%, delivering obvious benefits for international projects under DAP terms.