ENERGY STAR Qualified Under Cabinet Range Hood Series The ESDQ Series fills a much needed energy efficient solution in the marketplace for under cabinet kitchen ventilation, placing Air King at the forefront of ENERGY STAR qualified ventilation.The ESDQ Series features an electronically balanced twin centrifugal blower with a three speed control switch. At an operating speed of 150 CFM, the range hood"s sound level is only slightly more than a quiet running refrigerator but still delivers enough ventilation for typical cooking. For times when additional ventilation is required the high speed of 270 CFM can handle the task.