A single speed motor would be considered to have only high speed. Most pool owners with one speed motor are running the filter ten hours on and ten hours off. This is enough circulation to keep the water clean as long as you remember to run the filter every day.
The advantage of a two speed motor is that you can run the motor on low speed 24/7 and it doesn’t cost any more to run then the one speed motor, but allows 24 hour filtration instead of just 10
Posted in: Swimming Pools