Sunward Solar Collectors have one primary purpose — to capture solar radiation.
Each Solar Collector is a sturdy, glass-paneled 4′ x 8′ box, which is insulated. Placed at the proper angle — on your roof or on the ground — the Collector efficiently captures the sun’s energy.
As sunlight travels through the glazed glass it heats the tubing. Inside the copper tubing is a heat transfer fluid called Glycol. This non-toxic food-grade anti-freeze absorbs the heat from the sun. The fluid is then pumped to a Heat Exchanger where the heat is transferred to your water supply. You can read more about how it works and that will give you a better understanding of what is actually going on.