Solar heating systems use energy from the sun to heat water or air for residential and commercial use. These systems typically consist of solar collectors, which capture sunlight, and a storage tank, where the heated water is kept. They can be used for various applications, including space heating, water heating, and even swimming pool heating. There are two main types of solar heating systems: active and passive. Active systems use pumps and controls to circulate the heat transfer fluid, while passive systems rely on natural convection and gravity. Both types can significantly reduce energy costs and reliance on fossil fuels, contributing to a more sustainable environment.