10 Best Pool Solar Heaters 2025 in the United States

The Sun2Solar Blue 24 ft Round Pool Solar Cover is designed to help raise your pool’s water temperature by up to 15 degrees using solar energy. It acts as a heat-retaining blanket that also minimizes heat loss overnight. Made of durable plastic with a lightweight design, it’s easy to place and remove, fitting round pools up to 24 feet across. Besides heating, it conserves water by preventing up to 95% of evaporation, which also reduces the need for chemicals and refilling. It helps keep debris like leaves out of your pool, cutting down on cleaning time.

While this cover doesn’t have traditional solar panels, its bubble design efficiently captures and holds heat from the sun. This makes it suitable for both inground and above-ground pools, fitting well with most pool systems without complicated installation. However, because it’s a cover rather than a solar collector panel, it may not heat the water as quickly or as much as dedicated solar panel heaters with larger surface areas.

The material is sturdy enough for regular use, but it may need gentle cleaning and proper storage to maintain its lifespan. This product provides a practical and affordable way to boost your pool’s warmth while saving on water and chemical use, especially for those who prefer a low-maintenance solution rather than a full solar heating system.

The Intex 28015E Solar Pool Cover is designed for 18ft round Easy Set and Metal Frame Pools. One of its standout features is its simplicity in use; you just lay it on top of your pool and let the air bubbles absorb and transfer heat from the sun to the pool water. This cover excels in protecting the pool from debris, reducing water evaporation by 95%, and minimizing chemical consumption, which can save you money over time.

It's constructed from durable plastic that ensures longevity and is designed to float, making the installation process straightforward. However, it's important to note that while it insulates the pool water, it may not provide the same heating capacity as more sophisticated solar heaters with multiple panels. Additionally, the cover primarily serves to keep the pool clean and maintain water temperature rather than significantly heating the pool.

It's water-resistant and easy to clean, but you must ensure proper maintenance to avoid mildew. If you’re looking for a cost-effective way to keep your pool clean and reduce evaporation, this cover is a solid choice. However, if substantial heating is your primary goal, you might need to consider additional solar panels for more effective results.

The BigXwell Solar Pool Cover is a well-rounded option for those looking to naturally heat their in-ground swimming pools while cutting down on energy costs. The cover is designed with 16-mil thickness and thousands of thermal bubbles to efficiently harness and retain heat from the sun, making it a great choice for maintaining a comfortable pool temperature even on cloudy days or cooler nights. This can reduce your reliance on traditional, more costly heaters and lower your energy bills. Additionally, the cover helps protect your pool from dirt, debris, and unwanted guests, which can decrease maintenance efforts and costs over time.

By minimizing water and chemical evaporation by up to 95%, it also ensures you won't need to constantly refill your pool or add chemicals, saving further resources and costs. Installation is simple, as it merely floats on the water's surface, and its lightweight makes removal and storage straightforward. However, it is worth noting that due to its polyethylene material, it might not be as durable as some other materials under extreme weather conditions over the long term.

This product is particularly suitable for pool owners who prioritize energy efficiency, ease of use, and maintenance reduction. The cover comes in a standard 12x24 foot size, which is perfect for most in-ground pools.