When it comes to HVAC and ventilation systems, choosing the right flexible duct can make a significant difference in energy efficiency, noise control, and overall system performance. Here we compare two solutions from our product line: the Standard Insulated Flexible Duct and the Insulated Acoustic Flexible Duct.

Both ducts are constructed with a fiberglass insulation layer (25–50mm thickness, 16–32 kg/m³ density) covered by an aluminium/polyester laminate jacket. This design:

• Reduces heat and cool loss
• Prevents condensation
• Maintains performance from -30°C to +250°C

The Insulated Acoustic Flexible Duct features a slightly perforated inner core. This small modification allows the duct to absorb sound waves, significantly reducing noise transmission through the ductwork. For applications where silence matters – such as conference rooms, recording studios, or luxury apartments – the acoustic version is the clear winner.

Both ducts handle:

• Max air velocity: 30 m/s
• Working pressure: 2500–3000 Pa
• Bending radius: 0.54 * D + 25mm

The solid core design ensures the duct maintains its full diameter throughout bends, offering low resistance to air flow when properly installed.

Bottom Line: Both products deliver reliable thermal insulation, fire resistance, and flexibility. The choice comes down to whether your project requires acoustic control.