Yes, you can clean them yourself. All you need is a vacuum cleaner with a hose and attachment, and a ladder. Start by checking the manufacturer's instructions for your vacuum cleaner to make sure it is safe to use on vents and air ducts. If it is, go ahead and vacuum all of the dust and dirt from the vents and ducts. Be sure to get into all of the nooks and crannies, using the hose attachment if necessary. You may also need to use a ladder to reach some of the higher vents or ducts. Once you have cleaned them, be sure to check them again in a few months to make sure they stay free of dust and dirt build-up.

It's generally a good idea to have a professional air duct cleaner inspect your system and clean your air ducts and vents every few years. Air duct cleaning should be part of your regular preventive maintenance routine for your HVAC system. A professional air duct cleaner will use the appropriate equipment to clean your air ducts and vents, and he or she will also take care to protect your furniture, floors, and other belongings from damage.