How many hours a day should I run my pool pump in summer?

Run your pool pump 8–10 hours a day in summer. That’s the sweet spot—less risks algae, more burns electricity. Most single-speed pumps turn over the pool volume in that time; variable-speed pumps can run longer at lower speed for less cost. Run it during peak heat (midday to late afternoon) to keep chlorine stable, and clean your filter regularly so the pump circulates effectively.