Pump Turnover
Pump turnover is the number of times the entire pool volume passes through the filter in a 24-hour period.
Definition
Pump turnover is the number of times the entire pool volume passes through the filter in a 24-hour period.
Typical Values: Minimum: 1 turnover per 8 hours; Recommended: 1–2 turnovers per day; Commercial pools: often 4–6 turnovers per day
In Plain Language
One turnover means the entire pool volume has been filtered once. The industry standard minimum is one turnover per 8 hours (3 turnovers per day). More turnovers mean better filtration and chemical distribution. Variable speed pumps can achieve more turnovers per day at lower energy cost by running at lower speeds for longer periods.
Why It Matters
Insufficient turnover rate is one of the most common causes of persistent cloudy water and algae problems, regardless of correct chemistry.
Typical Values
Minimum: 1 turnover per 8 hours; Recommended: 1–2 turnovers per day; Commercial pools: often 4–6 turnovers per day
Last reviewed: 2026-06-01