Distilled water is an essential element for several domestic and industrial applications, where high purity of water is required, such as the pharmacy industry, automation, chemical and biological laboratories, etc. In this work, a thermoelectric water distiller is proposed and investigated numerically. The hot side of thermoelectric modules is used to boil water, while the cold side is utilized to condense the generated water vapor to produce distilled water. A compact design was proposed to minimize heat losses and to enhance productivity. Liquid water and vapor were circulated naturally without using pumps or fans. The mathematical model of the thermoelectric distiller was developed and validated with experimental data. To investigate the performance of the thermoelectric distiller, the effects of different operating parameters on it were examined, such as thermoelectric modules current, and the thermoelectric distiller size. Findings indicated that distilled water is produced with low energy consumption compared with conventional electrically powered distillers while operating thermoelectric modules at relatively low current. Where a value of 200.3 kWh/m³ of SEC was achieved with a 3.5 coefficient of performance of thermoelectric modules (COP_h).