Frequently Asked Questions
A variable speed pump will save a huge amount of energy. Here are some videos from Pentair that explain how the Pentair Intelliflo variable speed pool pump can save you up to 90% on your pool filtration and circulation costs!
The variable speed pump is a perfect match for solar pool heating systems, especially when an automatic controller is used. Without a controller the pump can be scheduled to run at optimum solar circulation speed when solar energy is most likely to be available. Adding a controller adds the capability of changing the pump speed based on the availability and demand for solar heating. This happens automatically. As your solar pool heating system turns on, the variable speed pump will adjust to meet the pressure and flow demands of your solar panels without exceeding the requirements and wasting energy.
Variable speed pumps with solar pool heating is a perfect marriage. Solar panels have an optimum flow rate that make them operate efficiently. With a variable speed pump we can "dial in" the perfect flow rate for your solar pool heating system and only run the pump at that speed when needed. This provides the optimal tradeoff between pool heating performance and energy savings!
With or without solar energy, the variable speed pump will pay for itself with energy savings. You can cut pumping costs up to 90% with this great technology while getting a far quieter and longer lasting pool pump.
A variable speed pool pump, also known as a variable frequency drive (VFD) pump, can operate at a wide range of speeds in revolutions per minute or flow rates in gallons per minute. Variable speed pumps save tremendous amounts of energy by circulating pool water only at the required speed to get the job done.
Traditional single speed pool pumps operate at a single speed: 3,450 RPM. A variable speed pump, which typically includes a brushless DC permanent magnet motor, can operate at a range from 450 RPM on some models up to 3,450 RPM. Most variable speed pumps are 2-3 horsepower, but can replace much smaller pumps because they can run at essentially any speed.
Savings come from operating the pump at a lower speed, but perhaps for longer periods of time. The physics of a centrifugal pump, known as Affinity Laws, result in an exponential reduction in energy used compared to pump speed and water flow. For example, cutting the flow in half with a variable speed pump might use one quarter of the energy! To get the same flow you could run the pump twice as long but your energy costs would be cut in half!