How Much Does a Pool Pump Cost to Run Per Month?

Calculate a single-speed pump

Convert pump watts to kilowatts, multiply by hours per day, and then multiply by days and the electricity rate. A 1,500-watt pump running eight hours daily uses 360 kWh in a 30-day month before any other pool equipment is added.

Variable speed needs more than one line

A variable-speed pump may run at different wattages for skimming, filtration, heating, or cleaning. Calculate kWh for each speed-and-time block and add the results rather than applying full rated power to the entire schedule.

Choose runtime from the pool, not a generic rule

Required circulation depends on pool volume, pump flow, sanitation method, debris, weather, and local guidance. Reduce runtime in measured steps while checking water quality instead of assuming the pump must run around the clock.

• Confirm that skimmers and sanitation still work at the selected speed.
• Keep baskets and filters clean to reduce flow restriction.
• Account separately for heaters, salt systems, cleaners, and lighting.

Use the right electricity price

A state residential average is helpful for comparison, but a time-of-use plan can reward overnight or midday operation depending on the utility. Apply the price for the hours in which the pump actually runs and include seasonal schedules in an annual estimate.