On Tue, 12 Aug 2008 17:32:47 -0700 (PDT), wrote:

Can anyone tell me what ton my blower is based on this information?
And any suggestions. I have had the installed come out and all vents
are between 300-500 cfm. temperature drop is 22 degrees.

Toneage is a measurement only used for measuing cooling and is the equivelent
mass of ice used per day from the technology of a hundred years ago.

Blowers aren't measured in toneage. They're measured in CFM.