10 Best In-Ground Swimming Pool Filters 2025 in the United States

The Hayward ProGrid 60 is a high-capacity diatomaceous earth (DE) filter designed for large in-ground pools and outdoor spas. Its 60 square feet of vertical grid filter area offers strong filtration performance, helping keep pool water clear and clean. With a flow rate of up to 120 gallons per minute, it can handle sizable pools efficiently, making it suitable for larger setups where good water circulation is important.

One of the filter’s strengths is its durable construction. Made from a glass-reinforced copolymer, it’s built to resist corrosion and withstand outdoor conditions over time. This means you can expect it to last without issues related to rust or weather damage. The design also includes a tamper-proof clamp for easy access to the interior when maintenance is needed, which simplifies routine cleaning without disturbing plumbing connections. Additionally, the manual air release valve helps remove trapped air quickly, improving filter operation.

On the maintenance side, DE filters generally require adding diatomaceous earth powder after each backwash, which can be more involved than simpler cartridge filters. The Hayward ProGrid’s top-down backwash system makes this process fairly straightforward, but it still needs regular attention to maintain peak performance. The size and weight (over 80 pounds) mean installation might require professional help or at least two people. This filter is a solid choice if you have a large pool and want a reliable, high-quality DE filtration system that offers clear water and long-lasting durability. Users generally report satisfaction with its balance of performance and build quality.

The Hayward W3C3030 SwimClear Cartridge Pool Filter is designed with a top manifold configuration, offering excellent filtration and hydraulic performance. This can help reduce operating costs, which is a significant advantage. The filter's 325-square-foot cartridge is cleanable, which eliminates the need for backwashing and makes maintenance simpler and more eco-friendly. This is an appealing feature for users looking to save on water usage and maintenance time.

The heavy-duty tank and tamper-proof flange clamp ensure durability and security, making it a long-lasting option for pool owners who face tough environmental conditions. Additionally, the high-capacity manual air relief valve simplifies the process of bleeding air from the system, enhancing ease of use. However, the filter is relatively heavy at 74.8 pounds, which could make installation more challenging. It also has a large footprint, so space considerations are necessary.

The Hayward W3C12002 StarClear Plus Cartridge Pool Filter is designed to offer high efficiency and reliability for in-ground pools. This filter uses a cartridge type, which is known for its ease of maintenance as it requires less frequent cleaning compared to sand filters. With a size of 120 square feet, it is suitable for medium-sized pools, providing ample filtration space to ensure clear and clean water.

The extra-large, single-element cartridge is engineered with precision for strength and optimal flow, and the molded end caps add durability to its design. The single-locking knob simplifies the process of securing the filter head, and the rotatable filter head allows for easy access to the cartridge element, making maintenance straightforward.

The filter's single-piece injection-molded base and body enhance its durability, ensuring it can withstand corrosion and provide long-lasting performance. Moreover, it offers versatile plumbing connections, making it adaptable to various setups. Customer reviews rate it highly at 4.6 out of 5 stars, indicating strong user satisfaction. However, potential buyers should note that it measures 37.7 inches in height and weighs 30 pounds, which might be bulky for some setups. This filter is a solid choice for pool owners looking for a durable and easy-to-maintain filtration system.