What are most ducts wrapped in to minimize the noise level produced by the air conditioning system?

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Multiple Choice

What are most ducts wrapped in to minimize the noise level produced by the air conditioning system?

Explanation:
Wrapping ducts in insulating material reduces noise by absorbing sound and dampening vibrations so less of the air‑movement noise travels through the duct walls. This insulation acts as a barrier to sound, keeping the HVAC system quieter in the occupied space. While fiberglass is a common example of insulating material, the general idea is the use of an insulating wrap—the category best describes the purpose. Metal sheathing would mainly reflect or carry sound, not dampen it effectively, and foam isn’t the standard duct wrap for noise control in most systems.

Wrapping ducts in insulating material reduces noise by absorbing sound and dampening vibrations so less of the air‑movement noise travels through the duct walls. This insulation acts as a barrier to sound, keeping the HVAC system quieter in the occupied space. While fiberglass is a common example of insulating material, the general idea is the use of an insulating wrap—the category best describes the purpose. Metal sheathing would mainly reflect or carry sound, not dampen it effectively, and foam isn’t the standard duct wrap for noise control in most systems.

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