John Bergman is LEED AP certified and is principal of John E. Bergman LLC, P.O. Box 11167, Columbia, MD. 21044-1090; 410-948-6050; www.johnebergman.com.
There are two tides swirling toward the U.S. air conditioning industry, one from
Europe and one from Asia. From Europe comes radiant cooling and from Asia comes
variable refrigerant volume (VRV), or as they are also known, multi-split or
multi-zone systems.