Should you run your pool pump 24 hours a day?
Updated : · Piscines VP
At Piscines VP, we recommend never stopping filtration during the season: water that circulates continuously stays clearer, better sanitized and more stable. The way to do it without noise or a big bill is a variable-speed pump running at low speed 24 hours a day, raising the speed only for vacuuming or backwashing.
It’s one of the questions we hear most. Our answer is simple: don’t stop filtration.
Why filter continuously
- Water stays clear: particles are caught as they come.
- Chlorine spreads everywhere instead of staying near the returns.
- Fewer algae: moving water gives them less of a chance.
- Fewer surprises after a heat wave or a big swim day.
How to do it without noise or big bills
The key is a variable-speed pump:
- Low speed, 24 hours a day for filtration: quiet and economical.
- Higher speed only for vacuuming, backwashing, or a heater that needs more flow (see its instructions).
Why it’s economical: when speed drops, power use drops much faster. See the difference with your own numbers: electricity cost calculator. And read Is a variable-speed pump worth it?.
With a single-speed pump
It can only do one thing: run flat out. Continuous filtration becomes loud and costly. If that’s your situation and the pump is a few years old, switching to variable speed is often the best decision.
What about noise at night?
At low speed, a good variable-speed pump is almost inaudible. If a hum remains, it’s almost always vibration carried into the ground. See Vibrating pump.
Piscines VP provides regular pool maintenance in Laval and the Basses-Laurentides, Quebec.
Frequently asked questions
Does turning the pump off at night save money?
It saves a little electricity, but the water stagnates: chlorine spreads less evenly, debris settles and algae get a better chance. With a variable-speed pump at low speed, continuous filtration costs little and makes almost no noise.
What about a single-speed pump?
It always runs at full speed: continuous filtration is loud and expensive. That's the best reason to switch to a variable-speed pump.
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