Response to Hi Scott, the 1.5 horsepower replacement single-speed motor will be the model B854 however it is not always recommended to go up in horsepower as it may be too much for your system. One fail-safe is to go with a variable speed so you can just adjust the RPM's and not have to worry. If you do that the variable speed motor is the ECM16SQU. Here is a guide that we put together that may also assist called "How to Size a Pool Pump for Your In-Ground Pool"

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