My pool pump pooted out at the end of last season and I think I'd like to go with a 2 speed, but it has been opined to me that the SWG would not operate properly on low speed, and would not truly save much money. Anyone know differently?

Also, I've been told that the low speed wouldn't flow enough water to prevent freezing pipes in Georgia's occasional 15 degree low temps, when running all night. Anyone care to comment? Thank you.

Hal