This cooler is a bit more work to put in place, but is extremely helpful, offering lots of hrs of chilly air. Reply Richard Courtenay says July 26, 2023 at six:11 pm Hi David, I have two switchboards, a person grid and a person off grid. I make use of https://off-grid-solar-air-condit34566.bloggerswise.com/40565834/off-grid-solar-air-conditioners-options