Efficient Thermal Insulated Flexible Air Duct for HVAC Systems

▶ Additional information
Diameter (inches) : 2″-25″
Insulated Wrap : Fiberglass (Glass Wool)
Packing : 5/6/7.5/10meters Length in one carton box
▶ Basic Information
▶ Contact Information

Email: sales04@ducting.cn
Whatsapp: +86 13918360649

Description

Efficient Thermal Insulated Flexible Air Duct

XYHVAC presents its thermal insulation HVAC duct, a reliable and energy-efficient solution for residential and light commercial HVAC applications. Designed to balance performance, durability, and flexibility, this pre-insulated HVAC ductwork minimizes heat transfer, reduces energy loss, and improves overall system efficiency.

This flexible duct features a double-layer aluminum inner duct, high-density fiberglass insulation (100–750 g/m³), and a single-layer aluminum outer jacket. The structure is reinforced by spiral carbon steel wire (0.6–2.5 mm), ensuring stability under high airflow and pressure. The combination of these materials produces a high performance HVAC flexible duct that maintains precise airflow, thermal efficiency, and structural integrity.

Whether used for supply, return, or ventilation lines, this insulated HVAC duct is engineered for long-term reliability and easy installation.

Technical Specifications

ItemSpecification
Outer SleeveSingle-layer Aluminum
Insulation MaterialFiberglass (Glass Wool) ,Thickness: 25mm / 30mm
Inner DuctDouble Layer Aluminum
Fiberglass Density12kg/m3,16kg/m3,20kg/m3,24kg/m3,32kg/m3
Polyester Density (option)Thickness: 25mm / 30mm, 100–750 g/m³
Thermal ResistanceR4.2, R6, R8 (optional insulation thickness, high R-value colors is pink)
Maximum Air Velocity30 m/s
Working PressureUp to 3000 Pa
Available Diameter50mm–650mm (2″–25″)
Temperature Range-30°C to +150°C
Steel Wire Diameter0.6–2.5 mm (carbon steel spiral)
Standard Length10 m (customizable upon request)
Ease of CuttingNo special tools required; easy to connect
Fire & Pressure TestingPassed fire resistance and pressure tests
FlexibilityCan be bent in any direction (small bending radius)
Space SavingCompression ratio of 10:1
InstallationEasy installation; long service life

Installation

The duct’s steel wire helix provides both flexibility and shape retention, allowing routing around corners, joists, and obstacles without airflow disruption.

The aluminum jacket is durable, resists tearing, temperature fluctuations, and UV exposure, while maintaining a sleek, professional finish for exposed installations.

This thermal insulation HVAC duct is compatible with a wide range of connectors, registers, and plenums. Most installations require only two standard clamps.

  1. Measure the area (in sq. ft)
  2. Calculate airflow (1 CFM ≈ 1 sq. ft)
  3. Use a duct sizing calculator or chart

Example: A room needing 300 CFM airflow typically requires an 8″ or 10″ R8 flexible duct, depending on system layout.

Applications

  • HVAC supply and return air lines
  • High-performance air conditioning ductwork
  • Residential and light commercial ventilation systems
  • Dryer venting and general air distribution
  • Retrofit and energy-efficient HVAC upgrades
  • Whether designing for comfort, energy efficiency, or regulatory compliance, this pre-insulated HVAC ductwork provides durability and thermal performance that HVAC professionals demand.
  • Why Choose XYHVAC Thermal Insulated Flexible Duct?

  • Reliable insulated HVAC duct construction with reinforced aluminum jacket
  • High performance HVAC flexible duct with fiberglass insulation for energy efficiency
  • Easy installation — factory-compressed, simple to cut and connect
  • Wide range of diameters and insulation densities to suit different HVAC layouts
  • Tested for fire resistance and long-term durability
  • Trusted by contractors worldwide
  • XYHVAC’s pre-insulated flexible ducts are manufactured under strict quality control:

    Core Fabrication: Aluminum core formed and reinforced with steel wire.

    Insulation Layer: Polyester or fiberglass insulation applied evenly.

    Outer Sleeve Bonding: Aluminum or PVC outer jacket bonded securely for durability.

    Compression & Packaging: Ducts compressed and packaged for easy storage and transport.

    This process ensures thermal insulation HVAC ducts that are energy-efficient, reliable, and cost-effective.

Contact Us

Looking for dependable thermal insulation HVAC duct solutions for your project?

📩 Contact our technical team for product details, custom sizes, or a quote today. Our pre-insulated HVAC ductwork and high performance HVAC flexible duct solutions meet both residential and commercial needs.

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