8 hours is plenty for your pool pump in summer
Eight hours is usually enough to turn over your pool’s water once, which is all you really need.
That whole “run it 12 hours” thing comes from old advice or giant pools with weak pumps. If your pump is sized right and your pool is clean, one turnover – typically 8 hours – keeps the water clear and the chemicals mixed. Anything beyond that is burning electricity.
In peak summer heat, you might want to run it during the hottest part of the day to prevent algae, but even then, 8 hours covers that if you time it right. If your pool is green or you’re shocking it, run it 24 hours until it clears. But for maintenance? Cut it to 8 and save your wallet.
A variable-speed pump changes the math – you can run it longer at lower RPM and use less power. But if you’ve got a single-speed, 8 hours is your sweet spot.