Inside or outside mount?
Determining whether you want an indoor mount versus and outdoor mount is both one of preference and economic sense. An indoor unit is easy to install where your current storage tank is located. However, your plumber will more than likely need to purchase stainless steel vent piping since the majority of storage tank systems use galvanized piping. Outdoor units free up all of your internal floor space and, if your current water system is located on an outside wall, is less expensive to install.
