10 Best Pool Solar Heaters 2025 in the United States

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.

The DIY Solar Pool Heater Kit from SwimEasy boasts several strengths that make it a compelling choice for heating your pool. It features high-performance technology with superior absorber technology that captures more thermal heat from the sun. The panels are designed to enable effective water flow, enhancing heat transfer to your pool, which means your pool gets heated more efficiently and quickly.

The durability is impressive, with the panels built in the USA using high-grade materials and specialized UV stabilizers. They are designed to last 15-20 years, even under harsh rooftop conditions and varying weather patterns. Additionally, the advanced construction ensures the panels are solid with virtually no manufacturing variances, providing leak-free operation and reducing maintenance needs.

Compatibility with existing pool systems is also seamless, connecting easily to your pump and filtration system, and the DIY kit comes with all necessary hardware and comprehensive instructions for straightforward installation. On the downside, users should note that PVC pipe is not included in the kit, which may require additional purchase.