[TexasSP]

Being in the Facility Management and Construction Management business I can tell you e-revonut is right on. Your best bet is not to guess at it yourselves but to hire a competent AC guy to help you out. Your system needs to be balanced and like linc was talking about everything needs to be sized correctly.

In my personal experience the best are guys that have been in the business for 20-30 years and own their own small business with 3-10 employees. The big companies can do the work, but most of the time at a very high premium.