4 Things to Know About Adding a Variable-Speed Pump to an Old Pool

Check your pump’s voltage If your old pump is 115V, you may need a new 230V circuit or a less common 115V variable-speed pump.

Older 1.5-inch plumbing is fine Just avoid running the pump at full speed constantly. Low speed is the point.

Old timers may not work with variable-speed pumps You might need to bypass the timer and let the pump’s built-in controller handle scheduling.

It is a worthwhile upgrade if the electrical works Variable-speed pumps save electricity and run quieter, even on older systems.