... and blowing,920/1380rpm,4/6 poles 2)heater,condensor,freezer,exhaust fan,evaporator,air cooler 3)UL ... water chiller, condensing unit, central air-conditioning and heater, etc.3. The insulation class of motor is F ... experience and good serviceWe professionally produce motors and fans for more than 33 years. And we have done ... center... UL approval ac ball bearings electric motor for heater,freezer room