Oversizing swimming pool pumps has become such an issue that the State of California (a big pool state), recently enacted a law to control how big of a pump could be placed on a swimming pool. While it might not seem possible, it is actually less expensive to run your pool water pump 24 hours a day, 7 days a week if you have the correct pump in place. Unless you have a two-speed, or variable-speed pump, chances are you cannot operate around the clock. The savings with one of these pool pumps can be so large, you might want to invest in one, and you certainly want to consider if it is time for a replacement.