Flexible ducts are a popular choice for many HVAC systems, but they come with some drawbacks. One of the disadvantages of the flexible duct is its lack of durability. This type of tubing is generally more prone to wear and tear than rigid ducts made of metal or other materials, meaning that they will need to be replaced more often. Both the inner polymer tube and the outer cover of the flexible duct can be easily pierced with any sharp object, while metal ducts are virtually impervious to punctures in all normal situations.
It is essential to handle flexible ducts with care during installation. Rigid ducts are quieter than their flexible counterparts, as sound waves are channeled and directed smoothly through the material. On the other hand, flexible ducts are often noisy, as their walls expand and contract due to air pressure and changes in temperature. This amplified motion can sometimes reverberate through walls. Another disadvantage of flexible ducts is that the material creates more resistance to airflow.
Unlike metal ducts, flexible ducts often wrinkle and make it difficult for air supply to reach the designated roof vent. Less experienced contractors arrange flexible ducts in uncomfortable configurations, with sharp curves and sections that sag under their own weight. In conclusion, while flexible ducts are a popular choice for many HVAC systems, they come with some drawbacks. They lack durability, can be noisy, and create more resistance to airflow than metal ducts. Careful handling during installation is essential to ensure optimal performance.
