Name: Polyurethane Pre-insulated Duct Panels Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 306440716

Thanks to its excellent products and quality services, UNT Duct is one of the leading polyurethane pre-insulated duct panels manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

Polyurethane Pre-insulated Duct panels

Polyurethane Pre-insulated Duct panels is a modern, high-performance alternative to traditional metal ductwork for Heating, Ventilation, and Air Conditioning (HVAC) systems. It is a composite panel engineered to be a complete duct system in one product, offering significant advantages in energy efficiency, installation speed, and longevity.

Feature	Description & Benefit
Core Material	Rigid, closed-cell polyurethane (PU) foam, which provides excellent thermal insulation and structural strength.
Facing Material	High-strength aluminum foil bonded to both sides, offering corrosion resistance and a clean, hygienic surface.
Key Performance	Low thermal conductivity (~0.020 W/m·K) for energy savings; lightweight (70% lighter than metal ducts); strong airtightness with minimal leakage.

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How do Polyurethane Pre-insulated Duct panels reduce condensation risk and keep sustained energy efficiency?

Polyurethane Pre-insulated Duct panels deliver outstanding anti-condensation performance by virtue of high-grade thermal insulation and fully airtight aluminium foil facings. PIR cellular foam boasts an ultra-low thermal conductivity coefficient, which equalizes the temperature of duct outer surfaces and internal airflow. This greatly reduces the temperature differential between ductwork and ambient atmosphere, preventing surface temperatures from reaching the dew point, the fundamental factor leading to surface condensation.

In addition, continuous sealed aluminium foil linings obstruct lateral moisture migration from the surrounding environment, while precision-machined joint structures eliminate air infiltration and exfiltration. This isolates humid ambient air from the low-temperature insulating core, further mitigating condensation formation.

Suppressed condensation eliminates moisture retention and mould colonisation, and prevents progressive degradation of insulation thermal performance over operational years. Constant thermal resistance of the duct assembly avoids elevated heat transfer losses induced by dampened or compromised insulation. Consequently, the associated HVAC installation maintains steady low energy draw, sustaining consistent energy efficiency across the full design service life of the duct system.

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Packing and Shipping of Polyurethane Pre-insulated Duct panels

Polyurethane Pre-insulated Duct panels

Sheet Size: 3950*1200*20mm
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

Packed with plastic bags

Packed with cardboard box

Container Loading

Why choose UNTDuct

UNT Pre-insulated Ductwork

Project Case of UNT Ductwork

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PU Pre - Insulated Duct (with 0.08mm Alu. Foil, )	0.5mm G.I Duct + 30mm Rubber Plastic (40-90kg/m³)
Fire Safety	Compliant (Class 0/BS 476, AS 1530.3). Self-extinguishing PU core, low toxic smoke, non-combustible alu foil.	G.I non-combustible; rubber plastic fire-retardant but requires coating to meet strict codes.G.I
Thermal Insulation	Excellent. λ=0.020 W/m·K, no thermal bridging. 20mm integrated structure ensures consistent insulation.	Fair. λ=0.035 W/m·K, thermal bridging at G.I joints. 30mm insulation offset by metal conductivity.
Hygiene & Air Quality	Superior. Non-porous alu foil, smooth inner surface, moisture-resistant PU. Meets cleanroom/hospital standards.	Poor. Porous rubber plastic traps dust/mold; G.I-insulation gaps breed pathogens.
Lightweight	1.4-1.5 kg/m². Ultra-light, reduces structural load; ideal for retrofits/timber-framed buildings.	5.1–6.3 kg/m². Heavy G.I base + bulk insulation; requires reinforced supports.
Energy Efficiency	Excellent. 20–30% lower HVAC energy consumption. Minimizes heat gain/loss in conditioned air.	Low. 20–30% higher energy loss due to inferior insulation and thermal bridging.
Ease of Construction	Easy. Factory-prefabricated tongue-and-groove joints. No separate insulation step; 40–60% less labor time.	Complex. Two-step on-site process: G.I duct fabrication + rubber plastic wrapping. Labor-intensive, prone to gaps.
Quiet Operation	Good. PU core absorbs 10–15 dB airflow noise; alu foil dampens vibration.	Fair. Rubber plastic provides basic sound reduction, but G.I vibration and insulation gaps reduce efficiency.
Space Savings	Excellent. 20mm total thickness (all-in-one). Fits tight ceilings/retrofit cavities.	Poor. 30.5mm total thickness (0.5mm G.I + 30mm insulation). Bulky, requires larger installation space.
Environmental Friendliness	Balanced. CFC/HCFC-free PU, recyclable alu foil. 20–30-year lifespan; net carbon positive in 1–3 years.	Low. Rubber plastic non-recyclable; 10–15-year lifespan. Frequent replacement increases waste; higher energy emissions.
Air Leakage	Superior. ≤2% air leakage (EN 1507, AS/NZS 3660.1). Airtight factory joints + alu foil vapor barrier.	Poor. 5–10% air leakage. On-site sealing gaps; separate vapor barrier required.

Performance comparison based on UNT Duct product data and standard system configurations. Actual performance may vary depending on system design, installation method and project conditions.

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