Zodiac 1-480-02 2-HP 240-Volt Polaris QT Spa Blower 2 horsepower Polaris QT blower Enjoy the soothing effects of powerful, invigorating bubbles in your spa without excess equipment noise Blower is equipped with a patented thermal protection device to prevent overheating in case of a mechanical problem or exhaust blockage, it restarts automatically once it has cooled Built-in check valve adds protection against blower damage from water surges It is a UL listed product