The MasterTemp heaters offer customers convenience, efficiency, and reliability features you would want in a pool heater. These units are just as easy to use as your home heating system, plus, the LCD screen is easy to use while the troubleshoot icons make the operation and monitoring of the system a snap. These units offer super-quiet operation and a compact design won't intrude on leisure time spent poolside. The Heavy-duty unit with a cupro-nickel exchanger stands up to the harshest applications like high flow, low pH, or heavy use.