Pool Pump Runtime Calculator
Find out how many hours per day your pump should filter the water in your pool.
All calculations are for informational purposes only and serve as a guide. Consult a professional for precise data.
Pool Volume
Or enter volume directly:
Water Temperature
26°C
Higher temperature requires longer filtration due to faster algae and bacteria growth.
Filter Type
Frequently Asked Questions About Pool Pump Runtime
- How many hours a day should a pool pump run?
- The recommended runtime depends on water temperature, pool volume, and filter type. For an average 50m³ pool at 26°C, the pump should run 10-12 hours per day. In summer, when the temperature exceeds 28°C, this can be 14-16 hours.
- Should the pump run non-stop in summer?
- It doesn't have to run non-stop, but in summer the pump should run significantly longer — usually 12-16 hours per day. It's best to split the runtime into two cycles: 6-7 hours in the morning and 6-7 hours in the evening. This ensures constant circulation during the hottest parts of the day.
- What happens if the pump runs too little?
- Insufficient filtration leads to cloudy water, algae growth, and uneven chemical distribution. Water turns green, pH levels fluctuate, and chlorine loses effectiveness. Fixing such conditions requires shock treatment and costs much more than regular filtration.
- How does filter type affect pump runtime?
- Sand filters are the most common and require standard runtime. Cartridge filters have finer filtration but lower flow, so the pump needs to run ~15% longer. Glass media is the most efficient — it filters finer particles with less resistance, so the pump can run ~10% shorter.
- When should pump runtime be reduced during the year?
- During autumn and winter, when water temperature drops below 15°C, you can reduce pump runtime to 4-6 hours per day. This is enough to prevent pipe freezing and minimal sediment buildup. In spring, gradually increase filtration as the temperature rises.
