10 Best Solar Pool Covers 2025 in the United States

The BigXwell Solar Pool Cover is a 16-mil thick polyethylene cover designed for in-ground pools, measuring 16 by 32 feet in a rectangular shape. Its blue color helps it absorb and trap solar heat effectively, which warms your pool on sunny days and helps maintain temperature when it's cloudy or cool. This makes it a great choice if you want to swim in warmer water without extra heating costs. The cover features thousands of small thermal bubbles that boost heat retention and reduce water evaporation by up to 95%, saving you from frequent refills and water waste.

It’s lightweight and easy to handle, and can be trimmed with scissors to fit pools of various shapes, adding versatility. The material is durable enough to withstand harsh weather, but since it's polyethylene, it requires gentle care like hand washing and air drying to maintain longevity. One downside is that it floats on the water and doesn’t have a rigid locking system, so it may shift during windy conditions. Also, while the cover offers good insulation and UV protection, it’s primarily suited for use during the warmer months and may not be as effective in extreme cold.

If you have a rectangular in-ground pool and want a cost-effective way to keep your water warm and reduce evaporation, this cover offers a combination of durability and practical features that make it a solid choice.

The In The Swim 20' x 40' Premium Blue Rectangle Solar Pool Cover is designed to help warm your pool water by up to 15 degrees, thanks to its 12 mil thickness. This thickness strikes a good balance, making it durable enough to retain heat and protect the pool water from evaporative loss during cooler nights. The light blue color is chosen to optimize heat absorption without overheating, which can be a plus for extending your swimming season in both above-ground and inground pools.

The rectangular size covers standard pools well, and its material is made to handle typical pool conditions, but it’s important to maintain proper water chemistry—chlorine below 2.5 ppm and pH above 7.2—to avoid damage to the cover. Using a solar cover reel is recommended to make handling easier and to prolong the cover’s life by reducing wear and tear. Customers rate it positively, reflecting satisfaction with its performance and value.

Weighing nearly 50 pounds, the cover can be a bit heavy, which might make it tricky to handle without assistance. This cover is suitable for pool owners looking for a reliable and effective way to heat their pool and reduce water evaporation, especially if they are mindful of pool chemistry and use accessories like a reel for convenience.

The SunHeater Pool Solar Blanket is a solid choice for those looking to heat their pools naturally while minimizing water loss. Made from durable 12 mil thick polyethylene, this cover is designed to withstand the elements, making it suitable for both in-ground and above-ground rectangular pools. Its blue color not only enhances the aesthetic but also plays a role in heat absorption, trapping warmth from the sun effectively.

Users will appreciate its ability to reduce evaporation by up to 95%, which means less frequent refills and potential savings on water bills. Additionally, it helps keep debris like leaves and dirt out of the pool, which can cut down on cleaning time and costs. The blanket can be easily trimmed to fit various shapes, which adds flexibility for different pool designs.

However, at 31 pounds, it may be a bit heavy for some users, making it somewhat cumbersome to handle, especially alone. Also, while the folding feature allows for easy storage, it might require a bit of space due to its size. The SunHeater Pool Solar Blanket is a practical, energy-efficient option for pool owners who want to extend their swimming season while saving on water and cleaning efforts, but it may require some physical effort to manage due to its weight.