The new Instantaneous Water Heater (IWH) from Armstrong Pumps Inc. provides a win-win solution for contractors and building owners. The IWH is a small, compact, and easy-to-install alternative to the cumbersome storage tanks traditionally used for domestic hot water. The energy saving IWH also provides the advantage of a continuous supply of hot water and virtually eliminates the risk of Legionnaires' Disease that is often associated with storage tanks. Armstrong Pumps Inc.