Response to Yes, the UST1102 is going to be the replacement. UCT1102 is the energy efficient replacement that uses 2 amps less while keeping the same horsepower so saving money on your energy bill. STS1102 is the dual speed replacement that will allow you to run it at high, 1HP, and low, 1/4HP, which has the potential to save you even more money. The real energy saver is going to be the ECM16CU which is the variable speed replacement. With the variable speed you will be able to adjust the RPM's to where it is going to be the most efficient for your system. The seal kit you want is the GOKIT3SALT.

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