The EM-7.0 can replace traditional central hot water heaters, conserving water and reducing energy waste. The EM-7.0 can also be plumbed in with the central water heater to act as a booster. This lightweight and compact mini tank heater has been specifically manufactured for easy installation. The EM 7.0 comes with installation hardware that enables it to be easily mounted on the wall, or it can be free-standing. It is designed to operate at 150 psi maximum water pressure, so it is recommended that you install a pressure reducing valve if your water pressure is greater than 150 psi.