ARLINGTON, Va. - The Air Conditioning Contractors of America (ACCA) has posted on its Web site the first in its 2005 series of technical reference bulletins.

"Balancing Residential Air Distribution Systems (Part II)" is the second of a multi-part series devoted to the subject of balancing the air-side of residential comfort systems. This edition discusses blower performance and the interaction between the blower and the air distribution system.