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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.
Heating Your Pool. 1  1. Use a solar blanket. Solar blankets are pool covers designed to soak up solar energy and transfer it directly into the water. 2  2. Use solar rings. These clear, inflatable disks float on the surface of your pool and heat the water. 3  3. Mount solar panels on the roof of your home.