A low stress solar geyser (additionally referred to as a near coupled unit) is famous for many reasons, however there are  important points of interest.low pressure solar geyser the primary is the solar power thing. There’s isn't any need for any external power sources. Secondly, it’s a totally primary setup. To heat water on a every day foundation you literally best want the sun’s radiation. every other cause why a low pressure solar geyser machine is famous may be the reality that there aren't any transferring parts concerned, bringing us returned to the simplicity of the machine. but how exactly will it work you surprise? without a pumps to circulate the heated water, how can it warmness a big tank filled with cold water?