Before installing a variable speed pump in your swimming pool, you should consider the energy costs for running it. A variable speed pool pump allows you to control the speed and offers more energy efficiency. Since a pump runs throughout the day, it makes sense to program its run schedule for maximum cost saving. Here’s how:

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Consider the Amount of Water to Filter

As per the commercial standards, you need to turn over the water in your pool every 6-8 hours. It is the commonly accepted filtration requirement. This means your pool water needs 3-4 turnovers in 28 hours. However, for a residential pool, you need to pump a minimum of 13000 gallons of water every 24 hours.

So, to calculate the amount of water that you actually need to filter, there are several points to consider. It depends on how often you use the pool, how properly you balance the pool chemicals, rainfall, and some other factors. Monitor the flow rate to make an exact calculation.

Consider the Horsepower

The horsepower determines the speed at which your pump will turn the water over. If you choose a high horsepower, it means you need to run the pump for shorter periods of time. Here, you also have to consider the size of your filtration system. Do not use a high-power pump for a small filtration system. The ideal selection is a pool pump that’s powerful enough to turn over the water volume at an adequate rate.

Consider the RPM

In the functioning of a variable speed pump, RPM or rotation per minute is an important factor. You can save more on your utility bills by running the pumps on a low RPM. But, this isn’t the right approach. You can’t run your pump at a low RPM throughout the day. Even if it turns over the right volume of water at a low rate, the results won’t be pleasant for other pool equipment.

The heater will not fire up while the skimmer may be ineffective in removing the debris from the pool. Also, there may be trouble in making sufficient chlorine as a low RPM may prevent the flow switch on the salt cell from closing. Hence, you need a proper pool pump schedule in which the pump will run at higher speeds as well.

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Adjust to the Needs of Your Pool System

Every pool system is unique. Hence, you need to adjust the variable speed pump schedule accordingly. It depends on the plumbing system, flow rate, pipe size, total dynamic head, and equipment orientation. To determine all these factors and calculate an optimum running schedule, you can turn up the heater and slowly increase the RPM of your pool until the heater will fire up.

For example, if your heater fires at 1500 RMP, add some buffer amount to calculate the heater RPM. Now, program your pump to run for several hours above this RPM level every day. You can also prefer an automated system to manage these settings.

So, consider all these points and take help from pool professionals to schedule the run of your variable speed pump.