We built a pool last last summer. Used it about a month. We chose a 2 hp Hayward Super Pump. It is a two speed pump and we love it. Our pool is 20 x 40 ig vinyl liner. Generally, we run the pump on low speed 24/7. We did not close our pool this winter. We have not noticed any drastic increase in our electric bill. We have a built in spa and are in the process of building a waterfall. We plan to run the pump on high speed to use these features. Occasionally, because of pollen, we do kick the pump up to high for about 1 hour.
There are several threads about 2 sp pumps on this forum. Hope this helps.

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