How Do Variable Speed Pool Pumps Work?

I have been wondering if I should change my conventional single speed pool pump to a variable speed pump when mine gives trouble or packs up.

I have done some research and found out how a variable speed pool pump works. In this article, I will be sharing my findings and the advantages of these pumps with you.

A variable speed pool pump works by sensing water pressure on the outlet side of the pump and it electronically alters the speed of the pump to keep the outlet pressure constant. This type of pump stops pressure and flow spikes. 

With a conventional single-speed pool pump, the pump works at a max rpm all the time. The pressure and flow cannot be altered unless the outlet pipe size is changed. Therefore it uses max power all the time.

A pool pump has an electric motor that spins an impeller which in turn pumps water through the pool system. The variable speed pool pumps electric motor design is different in that it has an electronic switching and control system. With a variable speed pool pump, a pressure sensor is mounted on the outlet of the pump, and this pressure sensor measures the operating pressure of the pump. A VSD controller ( Variable Speed Motor Driver) which is mounted on top of the electric motor can be manually set so that it keeps the outlet pressure of the pump constant, no matter what flow is required out of the pump.

If the outlet pressure is set at 10PSI. The pump will alter its speed, either speed up or slow down according to the flow demands of the water on the pump. If you are just circulating the pool water the pump speed will be slow. When the demand is greater like when you are using the robotic pool cleaner, the pump speed will be faster.

This means that instead of the motor using 6 Amps, it will be using possibly 2 Amps to do the work and overtime this saves a lot of money.

Do Variable Speed Pool Pumps Really Save You Money?

Yes, they do. With a variable speed pool pump, there is a balance between economy and performance. If you purchase a variable speed pool pump, you will spend about $159.87 per year on your energy bill. That is an annual saving of $549.99 from the conventional single-speed pump. The cost difference between a standard 2.0 HP pump and a variable speed pump is about $750.00. You will recover this cost difference in about 16 months. In total will save 40 – 50% on your pool energy costs.

What Are The Advantages Of Variable Speed Pool Pumps

These pumps have four key benefits. They offer huge energy savings, better filtration for pool water, they are quieter in operation than other conventional pumps. There is less stress on other pool equipment when the pump is running at low speeds.

How Long Do Variable Speed Pool Pumps Last?

Variable speed pool pump motors last at least 6-8 years, often longer. Variable speed pool pumps have magnetic drive motors. These motors create less friction and offer higher energy efficiency compared to their older counterparts, which have copper winding motors.

Which Is The Best Variable Speed Pool Pump?

  1. The Hayward SP2610X15: The Best Pool Pump For A Stable Flow Rate.
  2. The Pentair 011018 IntelliFlo: The Best Variable Speed Pool Pump For Horsepower.
  3. The Hayward SP2302VSP Max-Flo: The Best Variable Speed Pool Pump For Easy Installation.
  4. The Hayward SP3400VSP EcoStar: The Best Variable Speed Pool Pump For Debris.
  5.  The Hayward SP15932S Power-Flo Matrix: The Best Two-Speed Pool Pump For Reduced Maintenance.