Name: PU HVAC Air Duct Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 309985733

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu hvac air duct 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.

PU HVAC Air Duct

Built around high-performance PU foam core, our PU insulation duct boards are lightweight composite materials. Combining superior thermal insulation, robust mechanical strength and official fire-rated performance in a single structure, they are a versatile choice for all HVAC construction applications.

Thanks to its modular and all-in-one design, this duct solution reduces overall energy consumption, greatly boosts on-site installation efficiency, and keeps ventilation running stably for years to come.

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 40-45kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

Send inquiry

Construction Efficiency and Cost of PU HVAC Air Duct

Integrated prefabricated panels support one-step cutting and assembly, substantially shortening construction cycles:

Labor Productivity Comparison For the same quantity of ductwork, conventional galvanized steel ducts require additional external insulation work, achieving an average output of 18 m² per worker per day. PIR panels can be directly assembled on-site, delivering an average daily output of 30 m² per worker. This cuts installation duration by 40%–60% and reduces labor expenses by around 45%.

Total System Cost Analysis Although panel unit prices exceed plain galvanized steel sheet, secondary insulation, moisture barrier layers and extensive hanging supports are no longer required. The overall cost of the finished duct system is comparable, and can even be up to 8% lower.

Logistics & Shipping Advantages Panels can be folded for compact packaging, raising vehicle loading capacity by 2.3 times. This reduces inland and ocean freight costs by 50%. The logistics benefit is especially notable for foreign trade projects under DAP incoterms.

Send inquiry

Market and Competition of PU HVAC Air Duct

The market size is growing rapidly: The global market CAGR is expected to reach 12.5% from 2025 to 2030. By 2030, the market size in China is projected to exceed 56 billion yuan. Building energy conservation and cold chain logistics are the core growth engines.

Outstanding competitive advantage: Compared with EPS materials, the insulation efficiency has been improved by 40%, and the compressive strength is more than 1 times higher; compared with EVA materials, it has a lower density and better processing cost, and has significant competitiveness in mid-to-high-end scenarios.

The industry trend is clear: Greening has become the mainstream, and the proportion of bio-based PU foams will reach 8.5% by 2026; the application of non-chlorofluorocarbon foaming agents (such as HFO-1233zd) is expanding to meet global environmental protection regulations, and the demand for high-end customized products is rising.

Send inquiry

Main Production Process of PU HVAC Air Duct

1. Raw Material Mixing

2. Aluminum foil embossing

3. PU Foam Injection

4. Foaming & Laminating

5. Pre-insulated Panel Cutting

6. Duct Panel auto-stacking

7. Packing of Pre-insulated duct

8. Stocking of PID panel

Send inquiry

Why choose UNTDuct

UNT Pre-insulated Ductwork

Packaging and Loading of UNT Duct Panel

Packaging of UNT Duct

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.

Contact now

Hot Tags: pu hvac air duct, China, suppliers, manufacturers, factory, customized