A solar-facing collector heats a running fluid that passes into a garage machine for later use. SWH are active (pumped) and passive (convection-driven). They use water simplest, or each water and a working fluid. they may be heated at once or via mild-concentrating mirrors.high pressure solar geyser They function independently or as hybrids with electric powered or fuel heatersIn big-scale installations, mirrors may additionally listen sunlight onto a smaller collector.