The full line of American High Efficiency condensing water heaters have been designed to provide years of dependable service and feature industry leading technology. The unique helical coil heat exchanger limits weld joints for optimal service life while maximizing heat transfer.INTELLIGENT CONTROL SYSTEM WITH LCD DISPLAY Exclusive American designed control systemProvides detailed water heater status informationPrecise temperature control adjustable from 90 to 180 degrees (Price subject to change without notice. Check stock before order)