Thanks to its excellent products and quality services, UNT Duct is one of the leading pir insulated hvac 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.
PIR Insulated HVAC Duct
PIR insulated HVAC duct is a ready-made air duct with built-in insulation. It has a hard PIR foam core laminated between two layers of aluminum foil. Unlike regular GI ducts, this is one complete piece. The duct and insulation are joined together at the factory, so no extra insulation work is needed on site.
Structure of PIR Insulated HVAC Duct
Outer layer: Aluminum foil or thin coated steel. It protects the duct, blocks moisture, and makes the duct strong.
Middle layer (core): Hard PIR foam. It keeps the cold or heat inside, reduces noise, and gives the duct its strength.
Inner layer: Smooth aluminum foil that is safe for air contact. It stops rust, stays clean, and creates a tight seal for smooth airflow.
PIR Duct vs. G.I. Duct: Key Advantages
| Feature | PIR Duct | G.I. Duct |
|---|---|---|
| Insulation Effect | Very good. Insulation is built into the panel. No heat loss at joints. | Average. Metal parts let heat or cold pass through easily. |
| Weight | Very light. About 85% lighter than G.I. Easy to carry and install. | Very heavy. Needs more supports and hard to move. |
| Installation Speed | Fast. One-step process. Cut, fold, and glue. | Slow. Two-step process. Make metal duct first, then wrap insulation outside. |
| Air Leakage | Low. Glued joints are tight and sealed well. | High. Many metal seams can leak air. |
| Cleanliness & Hygiene | Good. Smooth inner surface. No dust or mold buildup. | Poor. Outer insulation can trap dust, get wet, or grow mold. |
| Noise Reduction | Good. Foam core absorbs fan and airflow noise. | Average. Metal can transmit or even amplify noise. |
| Fire Safety | Acceptable. Foam is self-extinguishing. Aluminum facing adds protection. | Metal doesn't burn, but the outside insulation layer may not be fire-safe. |
| Energy Efficiency | High. Saves 20–30% more energy than traditional ducts. | Lower. More energy lost through duct walls. |
When to Choose PIR Pre-Insulated Ducts
Choose PIR pre-insulated ducts when your project needs good efficiency, clean air, and limited space:
Save energy and money: Cuts HVAC running costs by more than 20% over 30 years.
Fast to install: Makes installation easier and saves a lot of time on site.
Light and easy to use: Reduces the building's weight load and makes handling and assembly simpler.
Clean and safe: Has surfaces that resist rust, stop air leaks, and stay sanitary. Perfect for hospitals, cleanrooms, and medicine factories.
Saves space: The one-piece design needs less room for installation than traditional metal ducts with insulation. Great for projects with tight spaces.
When to Choose Traditional GI Ducts
Traditional GI ducts are still a good choice in the following situations:
Project rules say so: The design or technical rules clearly ask for traditional metal ducts.
Site has high risk of damage: If the ductwork may be hit or scratched during or after installation. PIR ducts have a foam core that can be punctured or damaged more easily than metal ducts.
Local fire rules are very strict: Some local fire safety rules require materials that do not burn at all. Metal ducts meet this requirement more easily. Even though PIR ducts pass standard fire tests, metal is still a simpler choice for these strict rules.
What is PIR Pre-insulated Ductwork System?
The UNTDuct PIR System is distinguished as the most advanced pre-insulated air distribution ductwork solution available globally. Its ease of installation and maintenance has been well-proven, marking a significant advancement in air distribution technology.
Beyond serving as pre-insulated PIR aluminum panels, the UNTDuct System offers a comprehensive solution. Complete with precision-engineered accessories, specialized machinery, purpose-built tools, and expert knowledge, it ensures flawless construction and installation.
PIR Pre-insulated Duct Panels
High-performance sandwich panels featuring rigid PIR insulation, fully clad with durable aluminum foil or aluminum sheets for superior duct construction.
Pre-insulated Duct Accessories:
Flanges, section bars, and specialized fittings designed for seamless duct joining and installation.
Pre-insulated Duct Equipment:
State-of-the-art bending machines, manual cuting tools and CNC Router Machine, enabling professional fabrication and installation-whether in a fully equipped workshop or directly on-site.
Pre-insulated Duct Know-How:
We provide unparalleled technical and commercial support to consultants and contractors, guaranteeing optimal system performance.
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