Run your pool pump 8-10 hours in summer, 4-6 in winter.

About 8-10 hours daily in summer, half that in winter. That’s the sweet spot for most pools.

In summer, heat and sunlight turn your pool into a algae farm. You need enough run time to cycle all the water through the filter at least once (one turnover). For an average in-ground pool, that’s roughly 8 hours with a standard pump. Skimping means cloudy water and more chemicals.

In winter, things slow down. Colder water means algae barely grows, and debris is lighter (leaves instead of pollen). You still need some circulation to keep water moving and prevent freezing in cold climates. 4-6 hours is usually enough to maintain clarity and protect your equipment.

The exact number depends on your pool size, pump flow rate, and climate. But these ranges work for 90% of people. If your water looks good, you’re fine. If it doesn’t, add an hour or two.

Your pump doesn’t need to run nonstop—just enough to keep the water moving and clear.