10 Best Sand Filter For Inground Pools 2025 in the United States

The Pentair TR60 Triton II is a solid choice for inground pool owners looking for a reliable 24-inch side-mount sand filter. Its 24.5-inch size is suitable for medium to larger pools, providing good filtration capacity. The design includes a heavy-duty closure and a swing-away diffuser, which makes it easier to inspect and access the sand and internal parts, simplifying maintenance.

The multi-port backwash valve, sold separately, allows easy cleaning of the filter, and you can select the compatible valve model to match your setup. The unit weighs 40 pounds and is built with durable materials, promising a sturdy, long-lasting build. Its internal parts are threaded, making servicing straightforward without special tools. The Pentair brand is well-known for quality, and the positive customer rating of 4.2 stars suggests good performance and user satisfaction.

This filter suits pool owners who want a dependable, easy-to-maintain sand filter and do not mind purchasing the valve separately to match their existing setup or preferences.

The Hayward W3S310T2 Pool Sand Filter is an excellent choice for inground pools, featuring a sizable 30-inch filter that promises efficient performance. Its multilateral underdrain assembly with self-cleaning 360° slotted laterals ensures balanced flow and effective backwashing, which is ideal for maintaining water clarity.

The filter media is evenly distributed thanks to the integral top diffuser, enhancing the filtration process. The unit is built with a corrosion-proof, rugged polymeric material, ensuring durability and reliable performance across various weather conditions. Maintenance is made easier with the large pressure sand/water drain and the 6-position VariFlo control valve, which simplifies the operation with its lever-action handle.

However, the filter's weight (83 pounds) and size (32 x 32 x 48.3 inches) may require careful consideration for installation and handling. This sand filter is well-suited for users seeking a durable, efficient, and easy-to-maintain solution for their inground pools.

The Hayward W3DE3620 ProGrid Diatomaceous Earth DE Pool Filter is designed to provide high efficiency and exceptional water clarity for in-ground pools. With a 36 sq. ft. filter size, it offers substantial filtration capacity, making it suitable for medium to large pools. The high-impact grid elements contribute to efficient filtration and backwashing, ensuring clean and clear pool water.

The durable, glass-reinforced copolymer construction promises longevity and resistance to corrosion, even under harsh weather conditions. Maintenance is user-friendly due to the tamper-proof, one-piece clamp that allows quick access to internal components without disrupting plumbing, and the rapid-release air relief valve simplifies air bleeding from the system.

At 66 pounds, it is relatively heavy and may require assistance during installation. Additionally, the manual air relief valve may require more frequent attention to prevent air buildup. This filter is a solid choice for those seeking durability and high performance, but potential buyers should be prepared for its heft and the need for occasional maintenance checks.