Water-Cooled Unitary Air Conditioners

As defined in the Code of Federal Regulations (CFR), small, large, and very large commercial package air conditioners and heat pumps are air-cooled, water-cooled, evaporatively cooled, or water source unitary air conditioners and heat pumps that are used for space conditioning of commercial and industrial buildings. 10 CFR 431.92. Manufacturers have been required to comply with the U.S. Department of Energy (DOE) energy conservation standards for small, large, and very large commercial package air conditioners and heat pumps since 1992.