9 Best Hayward Pool Sand Filters 2025 in the United States

The Hayward S310T2 Pro-Series is a 30-inch top-mount sand filter designed for in-ground pools. Its size and design make it suitable for medium to large residential pools, offering a good balance between filtering capacity and space requirements. The 2-inch Vari-Flo valve is a standout feature, providing six positions that help optimize water flow while keeping pressure low, which can improve energy efficiency and filter performance.

The filter’s base is made from rugged thermoplastic, offering durability and resistance to weather conditions, which is important for outdoor pool equipment. Maintenance is simplified thanks to the system’s design for quick assembly and precise alignment, making it easier to clean and service compared to some other models. The product is engineered to match performance and energy efficiency well, which should satisfy most pool owners’ needs.

One downside to consider is the weight (83 pounds) and size, which might require some effort during installation. This model is not discontinued and enjoys strong positive reviews (4.5 out of 5 stars from over 1,800 users), although it is not at the very top of best sellers, indicating there are other options available that might have additional features or different valve types. This Hayward filter is a reliable choice for pool owners seeking a durable, energy-efficient sand filter that’s relatively easy to maintain and offers versatile flow control.

The Hayward W3S270T ProSeries Sand Filter is designed for efficient and reliable pool filtration. With a 27-inch filter size, it offers a good flow rate that ensures optimal performance for medium to large pools. The filter media, sand, is standard for this type of filter and works effectively to trap dirt and debris. The top-mount design is user-friendly and makes installation straightforward.

One of the key strengths is the multilateral underdrain assembly which promotes balanced flow and thorough backwashing, enhancing the filter’s efficiency. The integral top diffuser further aids in even water distribution, ensuring the sand media bed works uniformly. Moreover, the filter tank is constructed from a corrosion-proof, rugged polymeric material, promising durability and all-weather performance.

The 6-position Hayward VariFlo valve is a highlight, featuring an easy-to-use lever-action handle that allows for simple switching between functions like filtering and backwashing. Maintenance is made easier with the large pressure sand/water drain, which facilitates rapid winterizing or servicing. However, the unit's weight (64 pounds) and size (27.8 x 27.8 x 44.9 inches) might be cumbersome for some users to handle during installation and maintenance activities. This sand filter is ideal for pool owners looking for a reliable, efficient, and durable filtration system, with easy maintenance and robust build quality being its standout features.

The Hayward W3S310T2 Pool Sand Filter is a 30-inch top-mount filter designed to offer efficient pool filtration. One of its key strengths is the multilateral underdrain assembly, which ensures balanced flow and effective backwashing. The self-cleaning 360° slotted laterals and integral top diffuser enhance its performance by distributing water evenly over the sand media bed. This design helps in maintaining a clean pool with less manual intervention.

The filter tank is made from rugged, colorfast polymeric material, making it durable and corrosion-proof, suitable for all weather conditions. Additionally, the 6-position VariFlo control valve with a lever-action handle simplifies the adjustment of filter functions, making it user-friendly. The large pressure sand/water drain aids in quick winterizing or servicing, adding to the ease of maintenance.

However, the filter's 83-pound weight and large dimensions (32 x 32 x 48.3 inches) might make it cumbersome to install and move. Despite this, the product has received positive feedback, with a customer rating of 4.2 out of 5 stars, indicating satisfaction. It ranks #45 in Sand Pool Filters on Amazon, reflecting its popularity among users. While it effectively meets the key specs of filter size, flow rate, filter media, valve type, durability, and ease of maintenance, its bulky size and weight could be a drawback for some users. Ideal for those who prioritize durable, efficient filtration in large pools, this filter is a solid choice, especially if installation and movement are not major concerns.