Solar collectors are located where they can receive the most energy from the sun throughout the day, typically on a roof. They are usually placed facing south, but any orientation between southeast and southwest is suitable. These systems can be installed either as stand-alone units during original construction or as retrofit add-ons in existing structures. Different types of collectors can be used in the same system, depending on the application and water temperature required. Modern systems are designed to withstand the extremes of the Canadian climate, and as with most renewableenergy technologies, maintenance costs – in both time and capital – are low. Solar hot water systems use simple, proven technologies to harness the sun’s energy. Business saves by reducing fuel costs, and the community saves by conserving Canada’s natural resources.