8 Best Solar Heaters For Inground Pools 2025 in the United States

The Sun2Solar Blue 16 ft x 32 ft Rectangle Solar Cover is designed to utilize free solar energy to raise your pool's water temperature by up to 15 degrees, which is impressive for a solar cover. Its heat retention capabilities ensure that warmth is maximized and maintained even during nighttime, making it effective in reducing the need for additional heating sources.

This cover is particularly beneficial for conserving water as it prevents up to 95% of water evaporation, thereby reducing the frequency of refilling the pool and the use of extra chemicals, which can be cost-saving in the long term. Another advantage is its ability to keep debris like leaves out of the pool, significantly reducing cleaning and maintenance efforts.

The cover's lightweight and durable design make it easy to install and remove, which is ideal if you need to cover and uncover your pool frequently. The polyethylene material used is known for its durability, although it may not be as long-lasting as some higher-end materials. At 26 pounds, the cover is manageable without being too flimsy. In terms of compatibility, the additional overlap design is useful for fitting around various pool protrusions. This solar cover is a practical option for those looking to enhance their pool heating using solar energy while also benefiting from reduced maintenance and water conservation efforts.

The BigXwell Solar Pool Cover is designed to naturally heat in-ground pools by harnessing the power of the sun. With a 16-mil thickness and thousands of thermal bubbles, it effectively traps and retains heat, making it a suitable alternative to traditional pool heaters. Measuring 12 x 24 feet, it offers substantial coverage, ensuring thorough heating and protection for large pools.

This solar blanket is constructed from high-quality polyethylene material, known for its durability and resistance to harsh weather conditions. It's lightweight, which makes installation and removal straightforward, a bonus for pool owners looking for convenience. The product is also efficient in reducing water and chemical evaporation by up to 95%, significantly cutting down on water and maintenance costs.

This cover is ideal for pool owners seeking an energy-saving, eco-friendly solution to keep their pool warm and clean.

The SwimEasy DIY Solar Pool Heater Kit is designed for high performance, making it a solid choice for heating inground pools. It uses advanced absorber technology to capture more thermal heat from the sun, promising superior heat transfer due to its innovative over-molded header design. This ensures efficient water flow through the collector, which is crucial for effective heating.

The heater kit's durability is also noteworthy, with a 15-20 year life expectancy and construction using high-grade materials and U.V. stabilizers, making it capable of withstanding harsh rooftop conditions and extreme weather. Installation is practical for DIY enthusiasts, as the kit includes all necessary hardware and a comprehensive manual to guide you through the process. Additionally, expert support is available from Solar Pool Supply for any installation concerns.

However, users should be aware that PVC piping is not included in the kit, which may require an additional purchase. The efficiency and reliability of the heater make it a highly recommended option, though its initial cost and installation effort might be considerations for some buyers. The product has received positive feedback, holding a 4.3 out of 5-star rating from 46 reviews, indicating a generally satisfactory user experience.