[mgenius33]

I would imagine it’s based on static pressure, system effect, and cfm setting.

 

[mgenius33]

Thanks for the reply. This helps a lot.

I did read a few threads here discussing TAM noise levels and return air systems not being appropriately sized leading to the fan always operating at the max level (e.g. 1551051-NOISY-HYPERION-AIR-HANDLER, sry I can't post links).

This might explain the big variance I see in reviews as some systems may not be appropriately sized.

Would still be grateful if anyone has a dB reading of the TAM9 at full cfm, but sounds like I should be ok w/ the location of my air handlers as long as I focus on proper ducting.

Full cfm isn’t the same as full rpm. If the ducting is designed properly there should be little noise.