Marine-grade water heater with two ways to heat water. Enjoy hot water heated dockside with 120V AC power or with engine heat when underway. West Marine water heaters feature a marine-grade aluminum case and cladded aluminum tank. A 1500W heating element and large diameter, dual-loop heat exchanger provide two ways to heat water. Circuitry is ignition protected for use on gasoline powered boats. A high-temperature limiter with automatic reset in included for safer operation. To make plumbing easier, all plumbing and electrical connections are front” located. Use of a magnesium anode is recommended to extend tank life. Key Features AC water heater with heat exchanger for use at the dock or underway Marine grade aluminum case and cladded aluminum tank for marine applications 1500W heating element for quick recovery using shore power or generator sourced power Front mounted plumbing connections for easier installation and service Includes high temperature limiter with automatic reset Ignition protected for use on gasoline powered boats