Get insulated ducting I found some to fit my 8in diameter can fan at home depot, or yard birds, lowes. I put it up through the ceiling. Dont get aluminum hella louder. Also It helped I put my fan on thermostat, before that it was on a timer for 15min intervals of my choosing or just to go off in the middle of the day when it is normally most noisiest from traffic, peoples, ac etc.