... (SKD)40HQ: 44 sets (CBU) 84 sets (SKDHow does XINGKE evaporative air cooler work? A pump circulates water from the base plate on ... are critical to the proper operation of your cooler.Why you choose the XINGKE evaporative air cooler? 1.this is new model,new body ... ,spain.3.quality guaranty,we warranty for 1year,if any parts damaged,we will offer free,clients take shipping fee,this ...