0 Rhonda Lawrenceville, GA on Feb 12, 2011 Like Clip How often or should I have my air conditioning/heating ducts cleaned. 1 Comment James A Roswell, GA No as often as advertised. Look down them with a mirror and flashlight. Are they dusty? If so there are many good deals. around. Watch for scams. Use "partner sites" below under "HVAC" for trusted contractors. NOTE: You can drag and drop your photos to reorder them Required Comment Saving...