EcoIn HVAC system special glass wool

HVAC glass wool from EcoIn provides premium thermal and acoustic insulation for heating, ventilation, and air conditioning systems globally.

EcoIn HVAC System is a glass wool product insulation and noise reduction system. The system uses the uniform slender high performance glass fiber, through the environmental protection formula binder curing molding, and a variety of high performance veneer and surface treatment, processing products.

These products are widely used in various parts of HVAC system that need insulation and noise reduction, including HVAC system special glass wool board, glass wool felt, glass wool duct lining and glass wool tube shell. The characteristics and advantages of these products not only lie in the high performance of their materials, but also in their excellent thermal insulation and sound absorption performance, overall non-combustible thermal insulation materials, durable and stable performance and the green concept of environmental protection building materials.

The unique features and advantages of EcoIn HVAC system lie in many aspects.

  • It has excellent thermal insulation and sound absorption performance, which can realize energy saving and noise reduction. The product uses an evenly distributed, slender and soft high-performance glass fiber interwoven microstructure, which can effectively block heat transfer and absorb acoustic energy, thus providing efficient insulation and sound absorption performance.

  • It uses the whole non-combustible insulation material. Non-combustible glass wool base material and imported long-term water resistant flame retardant moisture-proof veneer overall composite, non-combustible A level, to ensure the real fire safety under the application state.

  • Its performance is durable and stable. As inorganic insulation material, glass fiber has the characteristics of stable physical and chemical properties. The veneer has high strength and low water vapor permeability, which can ensure the complete drying of the insulation layer, and the performance is durable and stable. And the use of water resistant flame retardant veneer, can ensure the overall non-combustible performance of the product for a long time.

  • It is also an environmentally friendly building material. It is made of recyclable raw materials and follows the green concept of energy saving, material saving and emission reduction throughout the whole process.

  • Hvac system special glass wool board

The first is the hard plate HVAC system special glass wool board, the outer surface of the high strength moisture-proof veneer, can be applied to the rectangular metal air duct and surface equipment of the outer surface heat insulation, especially suitable for the occasion of the requirement of beautiful surface. The product is easy to install and smooth and crisp in appearance.

Performance Test Method Technical Requirements
Operating Temperature ASTM C411 -18℃ ~ 232℃
Hot Load Shrinkage Temperature GB/T 13350 Meets requirements
Mass Moisture Absorption ASTM C1104 or  GB/T 5480 ≤ 5%
Corrosivity GB/T 17393 Meets requirements
Fungal Resistance ASTM C1338 Meets requirements
Density (kg/m3)

Thermal Conductivity (W/m• K) @25℃

 GB/T 5480  GB/T 10294 32        40       48        64

0.034   0.033   0.033   0.032
Combustion Performance ASTM E84 Flame Spread: 25, Smoke Developed: 50
BS 476 Class 0
GB 8624 Class A non-combustible material
R-Value: (at 25℃)

Thickness(mm) Density   (kg/m3) 32 40 48 64
 25 0.76 0.76 0.78
30 0.88 0.91 0.91 0.94
40 1.18 1.21 1.21 1.25
50 1.47 1.52 1.52 1.56

*R-Value = thickness / thermal conductivity (unit: m2·℃/W)

Standard specifications:

Density(kg/m3) 32 40 48 56 64 80 96
Thickness(mm) 25 30 40 50
Width (mm) 600
Length (mm) 1200

  • Glass wool felt for HVAC system

The second is the rolled felt-like glass wool felt for HVAC system, its external surface is also made of high strength moisture-proof veneer. The product can be used for insulation of various shapes of air ducts and equipment external surface, its fiber is soft, comfortable, flexible application, close fitting, installation gap less, high insulation efficiency.

Performance Test Method Technical Requirements
Operating Temperature ASTM C411 4℃ ~ 121℃
Hot Load Shrinkage Temperature GB/T 13350 Meets requirements
Mass Moisture Absorption ASTM C1104 or  GB/T 5480 ≤ 5%
Corrosivity GB/T 17393 Meets requirements
Fungal Resistance ASTM C1338 Meets requirements
Density (kg/m3)

Thermal Conductivity (W/m• K) @25℃

 GB/T 5480

GB/T 10294

 32        40       48        64

0.034   0.033   0.033   0.032
Combustion Performance ASTM E84 Flame Spread: 25, Smoke Developed: 50
BS 476 Class 0
GB 8624 Class A non-combustible material
R-Value: (at 25℃)

Thickness(mm) Density   (kg/m3) 24 32 40 48
25 0.69 0.74 0.76 0.76
30 0.83 0.88 0.91 0.91
40 1.11 1.18 1.21 1.21
50 1.39 1.47 1.52 1.52

*R-Value = thickness / thermal conductivity (unit: m2·℃/W

Standard specifications:

Density(kg/m3) 24 32 40 48
Thickness(mm) 25 30 40 50
Width (mm) 1200
Length (mm) 10000-30000

( It is determined by volume weight and thickness)

  • Glass wool duct lining for HVAC system

The third product is the HVAC system special glass wool duct lining, the surface of the original factory online composite a layer of strength wear-resistant enhanced black BGT veneer. The product is installed in the air duct and equipment, and direct contact with the return air flow, heat preservation and noise reduction, is the best choice for occasions with high acoustic requirements. Its friction-resistant BGT surface can be washed by airflow for a long time, and the product provides excellent sound absorption and noise reduction performance while heat insulation.

Performance Test Method Technical Requirements
Operating Temperature ASTM C411 < 121℃ in air ducts
Hot Load Shrinkage Temperature GB/T 13350 Meets requirements
Maximum Air Velocity UL 181 20.3 m/s
Moisture Absorption ASTM C1104 or  GB/T 5480 ≤ 5%
Corrosiveness GB/T 17393 Meets requirements
Mold Resistance ASTM C1338 Meets requirements
Density (kg/m3)

Thermal Conductivity (W/m• K) @25℃

 GB/T 5480

GB/T 10294

 32        40       48        64

0.034   0.033   0.033   0.032
Combustion Performance ASTM E84 Flame Spread: 25, Smoke Developed: 50
R-Value: (at 25℃)

Thickness(mm) Density   (kg/m3) 32 40 48 64
25 0.76 0.76 0.76 0.78
30 0.88 0.91 0.91 0.94
40 1.18 1.21 1.21 1.25
50 1.47 1.52 1.52 1.56

*R-Value = thickness / thermal conductivity (unit: m2·℃/W)Standard specifications:

Density(kg/m3) 24 32 48 64
Thickness(mm) 25 30 40 50
Width (mm) 600
Length (mm) 1200

  • Hvac system special glass wool tube shell

Finally, the glass wool tube shell for HVAC system is a circular tube shaped product made of glass wool rolled and shaped by raw cotton. The outer surface is online composite high strength moisture-proof veneer. The product is suitable for all kinds of cold and hot water pipe external insulation. Its shape circumference, uniform thickness distribution, insulation effect is good, at the same time to provide supporting moisture resistance accessories and end face treatment measures, to adapt to various occasions of insulation moisture-proof requirements, to ensure that the insulation system for a long time and reliable operation.

Performance Test Method Technical Requirements
Operating Temperature ASTM C411 -18℃ ~ 232℃
Hot Load Shrinkage Temperature GB/T 13350 Meets requirements
Mass Moisture Absorption ASTM C1104 or  GB/T 5480 ≤ 5%
Corrosivity GB/T 17393 Meets requirements
Fungal Resistance ASTM C1338 Meets requirements
Density (kg/m3)

Thermal Conductivity (W/m• K) @25℃

 GB/T 5480

GB/T 10294

 32        40       48        64

0.034   0.033   0.033   0.032
Combustion Performance ASTM E84 Flame Spread: 25, Smoke Developed: 50
BS 476 Class 0
GB 8624 Class A non-combustible material
Standard specifications:

Density (kg/m3) 64 80 100
Thickness (mm) 25 30 40 50 60 65 70
Length (mm) 1000 1200
Pipe diameter (mm) 16 ~ 457

HVAC glass wool from EcoIn provides superior thermal and acoustic insulation for heating, ventilation, and air conditioning systems.

HVAC Glass Wool — Overview & Applications

HVAC glass wool is a lightweight, flexible insulation material engineered for heating, ventilation, and air conditioning systems. Made from fine glass fibers bonded with thermosetting resins, HVAC glass wool delivers excellent thermal and acoustic performance for air ducts, AHUs, and mechanical systems.

EcoIn manufactures premium HVAC glass wool products across a density range of 10–48 kg/m³, suitable for duct boards, duct liners, duct wraps, and pipe insulation. Each product is engineered to reduce heat loss, control condensation, and attenuate airborne noise in commercial and industrial HVAC applications.

Why Choose HVAC Glass Wool for Duct Insulation?

  • Low thermal conductivity (λ ≤ 0.044 W/m·K) for energy-efficient temperature control
  • Non-combustible fiber core meets fire safety standards (A1/A2 reaction to fire)
  • Flexible batt and rigid board forms adapt to complex duct geometries
  • Integrated ASJ, FSK, or aluminium foil facings simplify installation
  • OEM density, thickness, and facing options available from EcoIn

Selecting the Right HVAC Glass Wool Product

Choosing the correct HVAC glass wool depends on your application. HVAC glass wool boards are ideal for supply air ductwork, while HVAC glass wool rolls suit flexible duct wrapping on curved surfaces. For pipe sections in mechanical rooms, HVAC glass wool tube shells provide a pre-formed fit. Contact EcoIn to specify your required HVAC glass wool density, facing, and dimensions.

What density of HVAC glass wool is best for duct boards?

For HVAC duct boards, a density of 24–48 kg/m³ is recommended. Higher-density HVAC glass wool boards provide greater rigidity and better acoustic absorption for air handling units and rectangular ductwork.

Yes. EcoIn HVAC glass wool is manufactured without formaldehyde binders and meets EUCEB certification for fiber safety. When installed with appropriate facings, HVAC glass wool does not release fibers into the air stream.

HVAC glass wool offers higher temperature resistance (up to 250°C) and better fire performance than rubber foam. For high-temperature duct applications or large commercial projects, HVAC glass wool is the preferred choice. See our glass wool products.

HVAC glass wool insulation