Response to I have seen a recommendation to use the Tune Up Kit Hayward Supper II-GOKIT2 and also the Impeller 2.5 THP-SPX3021C. I believe both are Hayward brands. How is this used with the ECM27CU Century Motor if not a Hayward brand? Lastly, I don't understand how a variable pump saves money. If used at lower RPMs doesn't it take longer for the water to circulate effectively requiring a longer time and hence just as much energy? This may require a phone call, if so, let me know and I will call you.

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