Cleaning with ambient temperature ROX alkaline water satisfies a multitude of uses. However ambient alkaline water hasn’t always worked when needed to remove heavy build up of fat in hardcore situations like meat works or dairy farms. Thats about to change. ROX alkaline water can be now heated, affordably, to up to 80 degrees using continuous flow hot water systems. Rinnai warranty their excellent HD range of internal and external units to heat alkaline water , provided sensible daily flushing is completed.