HVAC Noise

[avc]

In a 48' x 34' room tile floors, cinderblock walls and acoustic tile ceiling. the HVAC is 10' x 4' flush with dropped ceiling. anyway to reduce noise when on.

[Randy S]

Use SSP Mat to wrap the duct.
http://www.soundproofing.org/sales/prices.html

[Juliewells]

You can try Acoustic Membrane. It is an award winning lightweight solution for ceiling soundproofing. Only 1.2 mm thick and very flexible. It is also easy to handle and carry.