Abstarct: Without access to water, human and other creature's existence becomes impossible. Water, after oxygen, is one of the most crucial factors for sustaining life. While humans can survive for weeks without food, the same cannot be said for water; without it, survival is short-lived. Recently, irreparable damages have been experienced. The water levels in many parts of the world have significantly decreased, leading to an intensified demand for water and discussions about the scarcity of this invaluable resource in the near future. This issue will be regarded as one of the primary concerns for humanity. One proposed solution is the use of Zero Liquid Discharge (ZLD) water purification systems. These systems not only eliminate the need to dispose of saltwater but can also convert saline water into fresh water and salt. This approach results in the production of more valuable freshwater and salt, enhancing the overall value of the system. Consequently, ZLD systems are considered sustainable options, aligning with the development of effluent-free systems. The research aims to produce water and extract sodium chloride from saline water by combining a forced circulation crystallizer system with a heat pump. Calculations for heat pump lines were conducted using EES software, and flow lines were modeled using Aspen Plus software. The forced circulation crystallizer system was modeled with a flow rate of 0.5 cubic meters per day and a hardness of 40 thousand PPM. The effects of varying inlet temperatures (from 25 to 50 degrees Celsius), heat exchanger heat capacity (12.75, 13, and 13.25), and crystallizer pressure (0.085, 0.11, and 0.14 bar) were examined. Results indicated that increasing temperature and heat exchanger capacity, along with decreasing crystallizer pressure, led to an increase in water and salt production. The system demonstrated the highest water production rate at an inlet temperature of 50 degrees Celsius, a crystallizer pressure of 0.085, and a heat exchanger heat capacity of 13.25.