What reduces the transfer of HVAC unit vibrations to the duct?

Flex connections are designed specifically to accommodate movement and absorb vibrations created by HVAC units, thereby reducing the transmission of these vibrational forces into the duct system. By allowing some degree of flexibility and movement, these connections help to isolate the ductwork from the vibrations of the HVAC unit, which can otherwise lead to noise and potential structural issues in the duct system over time.

This isolation is crucial in maintaining the integrity and efficiency of the HVAC system, ensuring that vibrations do not negatively impact the ductwork or the overall performance of the system. The flexibility of these connections allows for thermal expansion and contraction as well, adding to their effectiveness in minimizing vibrations.

The functionalities of other options, while beneficial in various aspects of HVAC systems, do not focus primarily on vibration reduction in the same way that flex connections do.