... ,CCC,TUV,UL,ETL 2. spa heater air blower(1)Feature Air Blower AP series air blowers are first recommended products with low noise ... , long life, easy installation and competitive price. They are company's ... notice 1. Model, power, voltage (frequency 50/60Hz of air blower’s excitation motor is universal, 220-240V, 110-120 V is ...