Explore the best type D pool filter cartridges in 2024 to improve the pool’s health, keep the water squeaky clean, and enjoy a swim safely.

Pull Out the Filter Once the air is released, you can safely uncap and pull your pool filter cartridge out. Expect the filter to be pretty dirty.

We tapped pool experts and analyzed dozens of models to select the 8 best robotic pool cleaners in 2025. Each one is powerful, efficient and user-friendly.