Permanent split capacitor (PSC) pool and spa pump AC motors have a capacitor that decreases the amount of power consumed for a given load. These motors have a one-compartment design that eases installation and maintenance.
ECM pool and spa pump AC motors come with an electronically-commutated motor (ECM) design that provides variable-speed and programming capabilities and energy savings not found on standard, single-speed pool and spa pump motors.
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