▶ Additional information
Diameter (inches) : 2″-25″
Insulated Wrap : Polyester
Packing : 5/6/7.5/10meters Length in one carton box
▶ Basic Information
▶ Contact Information
Email: sales04@ducting.cn
Whatsapp: +86 139 1836 0649
Polyester Insulation Duct
Description
Pre-insulated Duct by HVAC for Reliable, Energy-Efficient HVAC Airflow
Looking for high-performance HVAC ducting that combines flexibility, insulation, and durability? The 150mm insulated flexible ducting from HVAC is engineered to deliver consistent airflow, thermal efficiency, and long-lasting performance in both residential and commercial systems.
This flexible insulated ducting hose 150mm is constructed with a double-layer aluminum foil inner duct, 25–30mm polyester fiber insulation, and a reinforced aluminum laminated outer jacket.
This triple-layer structure delivers reliable R-value performance, mechanical strength, and ease of installation across various ventilation scenarios.
Key Features of the 150mm Flexible Metal Ducting
Double-Layer Aluminum Foil Core:
- Provides excellent corrosion resistance, pressure durability, and smooth airflow with minimal turbulence.
Polyester Insulation Layer:
- Clean, non-toxic, non-irritating to skin—making it ideal for user-friendly and health-sensitive installations.
Reinforced Foil Outer Jacket:
- Enhances mechanical strength and protects the ducting from moisture, UV exposure, and wear in semi-exposed areas.
Flexible & Compressible:
- With a 10:1 compression ratio, the duct is lightweight and easy to handle—ideal for tight spaces or modular systems.
Temperature Range:
- -30°C to +150°C working environment.
Pressure Capability:
- Suitable for low to medium-pressure HVAC systems (up to 3000 Pa).
Multiple R-Values:
- Available in R4.2, R6, and R8 insulation levels to meet different efficiency requirements.
Technical Specifications
| Item | Specification |
| Outer Sleeve | Reinforced Aluminum |
| Insulation Material | Polyester, Thickness: 25mm / 30mm |
| Polyester Density | Density: 100–750 g/m³ |
| Inner Duct | Double-layer Aluminum |
| Fiberglass(option) | Thickness: 25mm / 30mm |
| 12kg/m3,16kg/m3,20kg/m3,24kg/m3,32kg/m3 | |
| Thermal Resistance | R4.2, R6, R8 (optional insulation thickness) |
| Maximum Air Velocity | 30 m/s |
| Working Pressure | Up to 3000 Pa |
| Available Diameter | 10″ (254mm), other sizes from 2″–25″ |
| Temperature Range | -30°C to +150°C |
| Steel Wire Diameter | 0.6–2.5 mm (carbon steel spiral) |
| Standard Length | 10 m (customizable upon request) |
| Ease of Cutting | No special tools required; easy to connect |
| Fire & Pressure Testing | Passed fire resistance and pressure tests |
| Flexibility | Can be bent in any direction (small bending radius) |
| Space Saving | Compression ratio of 10:1 |
| Installation | Easy installation; long service life |
Reinforced vs. Common Aluminum Foil: What’s the Difference?
In HVAC ducting, both reinforced aluminum foil and single-layer aluminum foil are widely used as outer jackets or inner linings.
- Reinforced aluminum foil includes a mesh (usually fiberglass or polyester) for added strength. It offers better resistance to tearing and handling—ideal for ducts in high-vibration or exposed environments.
- Single-layer aluminum foil is lighter and more flexible, making it easier to install in indoor or protected spaces. It provides good thermal reflection and airflow efficiency.
Both foil types are effective. Choose reinforced foil for added durability or single-layer foil for flexibility and ease of installation—based on your project needs.
Fiberglass vs. Polyester: Which Insulation Is Right for You?
| Property | Fiberglass Insulation | Polyester Insulation |
| Material Composition | Made from spun glass fibers (glass wool) | Made from thermally bonded polyester fibers |
| Thermal Performance | High insulation efficiency; common in R6–R8 rated ducts | Moderate to high insulation, suitable for R4.2–R6 |
| Density Range | 12–32 kg/m³ | 100–750 g/m³ |
| Skin Irritation | Can cause itchiness or irritation upon contact | Non-irritating and safe to handle without gloves |
| Acoustic Properties | Excellent sound absorption capability | Good sound absorption, less than fiberglass |
| Fire Resistance | Inherently fire-resistant, rated A2 in many systems | Good fire behavior but depends on bonding agents |
| Environmental Impact | Contains glass; not biodegradable | Recyclable and more environmentally friendly |
| Recommended Application | Commercial HVAC systems with strict insulation needs | Residential or light commercial systems; user-safe installs |
Polyester insulation flexible duct offers a cleaner handling experience and stable mechanical performance,
making it a practical choice for many HVAC installations—especially in environments where ease of installation
and low irritation are important.
While fiberglass may offer a slightly higher raw R-value, both insulation types perform effectively in their respective
applications depending on project priorities such as thermal resistance, durability, and user handling comfort.
How Many CFM Does a 150mm Flex Ducting Deliver?
A 150mm flexible duct typically supports up to 100–140 CFM (cubic feet per minute), depending on:
- Length of the duct run
- Number of bends or fittings
- Static pressure of the HVAC system
CFM capacity drops with longer runs or excessive turns, so always consult a duct sizing calculator or HVAC engineer when designing airflow systems.
How to Connect Two Insulated Flexible Duct Hoses Together
- Straighten and Cut both ducts cleanly with a utility knife.
- Use a galvanized steel connector or rigid collar to join both ends.
- Secure with duct clamps or tension straps to prevent slippage.
- Seal the joint using UL 181-rated foil tape for an airtight finish.
- For additional durability, wrap the connection point with insulation and outer jacket tape to maintain consistent R-value.
Conclusion: Smart Choice for HVAC Installers
- The aluminium insulated flexible ducting hose from HVAC combines high-efficiency polyester insulation with reinforced structural layers—making it an excellent solution for flexible metal ducting needs. Whether you’re retrofitting a home or outfitting a commercial space, this 150mm flexible insulated ducting hose ensures long-term performance with simplified installation.
