Conclusion: Solar Covers do really work! Both to retain heat and reduce humidity, and when used on outdoor pools, they also add heat to the pool (Liquid Solar does not add heat). ... There's no apparent shortcut, the larger, bulkier solar pool covers just do a better job! Even if they are a pain in the neck.

How fast does a solar cover heat a pool?

Directly convert solar radiation into usable heat: In an in-ground pool, a cover can increase the water temperature by 5 degrees F for each 12 hours of coverage.

Do solar covers help pools?

A solar cover minimizes heat loss from evaporation by acting as a barrier between swimming pool water and the air. Specifically, you can reduce your swimming pool heating costs by up to 70% by using a solar cover.