Illustration.
How many hours
HealthyWA says the filter system should completely filter all the pool water within 6 to 8 hours, and remain running for at least one hour after the last person gets out. Most pools in summer run the pump for that long each day, often longer in heatwaves or heavy use. In winter, with no swimmers and cooler water, many owners run it for fewer hours; HealthyWA suggests a pool not in use over winter has its pump run about an hour a week with a little chlorine, under a secure cover.
To check your own pool: divide your pool's litres by your pump and filter's flow rate (litres per hour, from the maker's chart at your filter's pressure). That is how many hours one full turnover takes. Work out your litres.
What it costs to run
The SA Government says a swimming pool typically uses 2,000 to 3,000 kWh of electricity a year, depending on the pump, how long it runs and whether the pool is heated. Canstar Blue estimated an average pool pump costs between 16 and 51 cents an hour to run at an electricity price of 24.9 c/kWh. Variable-speed pumps run slower for longer and use less power for the same turnover.
If you have rooftop solar, run the pump in the middle of the day when your panels are producing.
Common questions
How long should I run my pool pump?
Long enough to filter all the water once a day, which health guidance puts at 6 to 8 hours, plus at least an hour after swimming.
How long should I run my pool pump in winter?
Less than in summer. For a pool not in use, HealthyWA suggests about an hour a week with a little chlorine, under a secure cover.
Is it OK to run a pool pump 24 hours?
It filters more but costs more. Most pools only need it in heavy use or while clearing cloudy or green water.