Ductless Mini-Splits and Their Kin:
The Revolution in Variable-Refrigerant-Flow Air Conditioning

New heating and cooling technology arriving from Asian manufacturers (including Daikin, Mitsubishi, and Sanyo) is shaking up the world of mechanical systems, offering compelling value and efficiency in a variety of settings. The technology varies in nature and scale, making it applicable to everything from single-family to multi-unit residential buildings and from small to mid-sized commercial buildings. Buildings that require heating and cooling simultaneously in different areas stand to save significant amounts of energy by transferring heat from one area...