The high need for reducing global worming effects from the emission of green gasses pushes to use renewable energy where possible. Solar distillers are devices with promising future. In this work an experimental setup (solar distiller) was constructed and equipped with a mirror, basin, glass cover, compressor, sensors and controllers to study the partially evacuation effects on different solar distillation parameters and production capacity under the Jordanian climate. The test rig was tested for three different water levels (1, 2 and 3 cm), and four pressures (1, 0.9, 0.8 and 0.7 atm) under Jordan climate. The detailed experimental results highly agree with previously published results in literature. The modifications performed on the system were able to double the previously attained efficiency. These improvements in Solar distiller will favorite the used of vacuum pressure principle in many different applications such as the water extraction from atmospheric air.