... type evaporatorhigh,medium,low temprature evaporator evaporator:ORGREN air cooler series is suitable for high,middle,low temprature(+5°C— ... evaporatorceiling type evaporatorhigh,medium,low temprature evaporator evaporator: air cooler series is suitable for high,middle,low temprature(+5°C— - ... .Defrost heat performance: 8 hours defrost cycle. Roof installation dual discharge air cooler for cold storage