Swimming pool pumps are mechanical devices that work in conjunction with the pool filters to maintain your pool's cleanliness. A swimming pool pump works by extracting water from the swimming pool and pushing it through the filter to trap debris and dirt. The pool pump then sends the clean water back into the pool. Most pool pumps are fitted with a prefilter basket to catch debris, many with transparent lids to allow you to monitor the basket.
Every swimming pool pump has a capacity that lets you know how much water it can circulate. When buying a pool pump it is important to look at their circulation ability by the minute or by the hour. A good basic rule of thumb is to ensure that the swimming pool pump can circulate your pool’s entire water volume in around 6 hours.
The size of your swimming pool filter is another factor to consider when sizing the swimming pool pump. If the swimming pool pump is too large for the swimming pool filter, it can make the pool filter work poorly or even worse and it can damage the swimming pool filter internals. Generally speaking, the slower the water moves through the swimming pool filter the better the quality of filtration, particularly with sand or DE filters.