For Florida Homeowners, Our experience shows that the pump should run 8-10 hours in the summer and 6-8 hours in the winter. This is so the water will be adequately filtered, which helps prevent algae and keeps the water clear. Pools in South Florida require the pump to run longer than “up north” due to the high amount of sun which promotes algae growth. Utility companies often recommend pool pumps run fewer hours, but this was based on a study that was done “up north”.