Yes, it is perfectly OK to leave your pool pump running, and it is even necessary in certain conditions. However, running it 24/7 is often an expensive waste of electricity. Most pools only need to run for 8 to 12 hours a day to keep the water clean.
How long can a pool go without a pool pump? Most pools start to show signs of water quality decline within 24 to 48 hours of lack of proper circulation. Algae and bacteria may begin to take over by day four or five.
For winter months, a shorter run time of 4-6 hours per day is typically sufficient, while summer requires a longer duration due to increased usage and higher temperatures. Generally, your pool should be run long enough to achieve one complete pool volume turnover in 4-6 hours for residential pools.
Running the pump during the day — when most people are in the pool — helps the water stay clean and clear. Even the cleanest swimmers bring a certain level of debris and contaminants into the water when they swim. Operating your pump while people swim will not only help remove natural debris like leaves and dirt.
All pools lose some water daily due to evaporation. Under normal conditions, expect about 1/4 inch per day, with weekly losses typically ranging up to 2 inches at most. However, factors like high temperatures, low humidity, wind, and pool activity can increase evaporation, leading to greater water loss.
Problem: Bushes, weeds and overhanging trees trap moisture and restrict air flow around pool pumps. Soil and mulch around pumps and low areas trap water and moisture. Pump motors will last longer in dry conditions.
After administering a shock treatment, running the pool pump continuously for 24 to 48 hours is recommended for both single-speed and variable speed pool pumps. This extended operation helps distribute the shock treatment evenly throughout the pool water, effectively eliminating contaminants.
Generally speaking, pools lose approximately 1/4” of water per day on average, though this can vary due to factors like wind, temperature, humidity and of course, the pool's total surface area.
Motor damage: The pump motor itself can be at risk when it runs out of water. The lack of water as a cooling medium can cause the motor to overheat, potentially leading to insulation failure, motor winding damage, or even motor burnout.
In mild winter weather, run your pool pump for 4 to 6 hours daily. If people are actively using the pool, increase your run time to at least 8 hours. However, when temperatures drop below 40°F (4°C), plan to run your pump 24/7 to prevent freeze damage.
A public history and art project, Ghost Pools will create a shared understanding of what happened to East Point's Jim Crow-era swimming pools – how they were funded, designed, litigated, defunded, and ultimately abandoned.
A pump failure from dry running means costly downtime and repairs, jeopardizing your entire water supply system. A pump can be damaged by running dry in as little as 30 seconds to a few minutes.
How to Set Your Pentair Variable-Speed Pump for Continuous Operation
For concrete or gunite pools, the shell is often the single most expensive component. Furthermore, it requires extensive engineering and highly specialized labor.
Backwashing flushes out the filter so it can keep doing its job, while waste pumping handles the extra debris and excess water that can throw everything out of balance.
During swim season, a simple rule of thumb is to run the system 1 hour for every 10°F of air temperature. For example, at 100°F, run the pump at least 10 hours per day. If you're fighting algae or recovering from a major weather event, you may need to run it 24 hours until the water clears.
Q: Which pumps can I run dry? A: Diaphragm pumps, piston pumps and peristaltic pumps can be run dry for any length of time.
On average, pool pumps last eight to 12 years before needing replacement. Over time, it's normal for pool parts to begin to wear down. In addition, swimming pool technology has come a long way in the last decade.
No glass containers
Glasses, glass bottles, or other glass containers aren't allowed in the pool areas.
Stabilizing Pool Chemistry
Sometimes the pool's alkalinity fluctuates because of heavy rainfall, frequent swimmers, or too much chlorine being added during shock treatments. In these situations, adding a calculated amount of baking soda for pools helps restore pH and alkalinity balance.
How much water does my pool need to refill from evaporation? The average amount of water evaporation during the summer is approximately half of an inch loss per day. Multiplied by seven days, that's 3.5 inches per week. Use the calculation below to get a monthly estimate of the evaporation rate of your pool.
Frequently Asked Questions
Add chlorine regularly (daily or every few days) to keep a steady level, and shock about once a week if needed. What chlorine, pH and alkalinity levels should I aim for? Target chlorine 1–3 ppm, pH 7.2–7.6, and alkalinity 80–120 ppm.
Most Common Places Where Pool Leaks Happen
The skimmer. The skimmer is common for small holes, cracks, and weak spots that can leak. The return lines. These are also common for leaks to occur because they are thin and made of the same material as the skimmers.