This 20-ton water-to-water heat pump is the latest addition to this company's Axiom¿ line. It can be in applications such as radiant heat, fan coil or fresh air systems. It's compact design fits through a standard 35-in. doorway and includes a microprocessor with diagnostic functions for maintaining system performance.

Trane Co., 3600 Pammel Creek Road, La Crosse, WI 54601.