The methods to control sound levels in AHUs present new challenges during design.
When minimizing noise from air handlers do you get huge increases in unit dimension?
Or do you struggle to find space for large silencers elsewhere in the system?
Do those silencers also cause severe pressure drop?
Which also results in larger fan hp and energy use?
Haakon custom air handlers came up with an elegant answer to these issues: The Unit Mounted Compact Turning Silencer.
It can be implemented on the discharge or intake for sound level reduction. All while keeping the unit length short and imparting little or no impact to the system pressure drop.
A simple request for turning silencers during design can specify these advantages for your AHU layout and your ears.