The original of the three, the single-speed refers to the fact that the motor spins the impeller at only one speed according to the horsepower of the motor.
If you are replacing a single-speed pool pump, we recommend you upgrade to at least a dual-speed or better. They’re more efficient, and they turn the pool water over more quickly.
But there’s something else to be aware of. Some states, such as Arizona and California, prohibit the installation of new single-speed pool pumps.
As the name implies, these pumps have two speeds: low and high. The high speed equates to that of a single-speed pump. The lower speed uses less energy, but may not be as efficient at water turnover. This will depend on your pool’s volume.
Yes, these pumps are more expensive than single- or dual-speed pumps, and rightfully so. This where that long-term investment in your pool comes in.
Instead of an induction motor like the other types have, a variable speed pool pump uses a permanent magnet motor, the kind used in electric cars. A magnet motor creates less friction than an induction motor. Less motor friction equals higher efficiency.
Variable-speed pumps also consume less power and turn the water over more quickly. They also run at lower revolutions per minute (RPM) than single- and dual-speed pumps, so they’re quieter. You may even get a utility rebate when you buy one.