Is it Time to Look For a Replacement Swimming Pool Pump?

by Pool Builders on 07-11-2010 in Articles

When you think about all the tasks that a swimming pool pump has to carry out, it's not surprising that quite often things go wrong.

A pump's daily life is made up of forcing all the water in a pool through a series of pipes, through a debris skimmer, then through the restrictions of the filter system, and back into the pool. That's a lot of energy required for jobs that are done mostly quietly and out of sight.

Because the pump does its job out of sight it's often out of mind as well. So when a pump plays up, that little workhorse can be a huge annoyance.

The main things that go wrong are the pump becomes noisy, leaks water, turns off after short use, doesn't pump at all or sucks air but no water.
The causes may be noisy bearings due to wear or lack of lubrication, clogged flow pipes or filter, loose or broken fittings at pump connections or loose debris basket lid.

Simply loose connections or blockages are easily remedied, but noise or shut off may not be so simple. It may be time to get a replacement pump. Depending on the size of your pool, before you set off after a new pool pump, consider that most pools actually have a pump that's oversize for the job required and so the energy or electricity bill is going to be oversize as well.

If you have only a pool, consider getting a pump closer to the minimum size needed. However, if you have a pool and spa combination, you should get a pump closer to the high end of your range.

Working out just what's required is a bit technical but here is the way to determine exactly what your minimum needs will be if you are a little mathematically minded.

Look up the size of your pool in gallons. The formula for rectangular pools is length times width times average depth times 7.5. The formula for circular pools is the radius squared times the average depth times 5.9. The formula for oval pools is the long diameter times the short diameter times the average depth times 5.9.

You also need to know often you want your water is circulated. Most pools are completely filtered every eight to twelve hours.

The more use your pool gets, the more often you'll need to do a complete filtration. Because pool pumps are measured in gallons per minute, multiply the time by 60 to convert it to minutes.
To determine the minimum flow rate you need for your pool, divide the volume by the turnover time. For example, a 27,000-gallon pool that turns over every 10 hours would need a unit capable of pumping 45 gallons per minute.

So it's not that hard and you'll know whether you have a pump that's too big or too small. If it is time for a replacement pump, consider the Pentair Whisperflo pool pump. Not only is it quiet but it is extremely efficient and economical.

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