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Solar Covers heat your pool in two stages: first by absorbing solar energy to heat the pool, and then by retaining the heat to keep the water warmer longer. The small bubbles on the Solar Cover are filled with air that heats up when the cover is in the sun.
Also, with the solar cover on the pool you are preventing the amount of debris that will be accumulated in your pool. Leaves and dirt can be hazardous on your poolâs filter and pumping system. Therefore, the solar cover is good for other things other than just keeping your pool heated.