This cooler is a bit more function to build, but is incredibly successful, delivering numerous hrs of chilly air. Reply Richard Courtenay says July 26, 2023 at six:eleven pm Hello David, I have two switchboards, a single grid and a person off grid. I use the off grid ror lights, https://sethunvhk.sharebyblog.com/33148658/off-grid-solar-air-conditioners-brisbane-an-overview