DIY Air Duct Cleaning can improve the air quality in your home and reduce dust build up. This is the portion of the ductwork that brings heat or air conditioning into individual rooms. Average homes have two or more returns, the ductwork / diy air duct cleaning that pulls the air from the home to the system for heating or cooling. Ductwork / diy air duct cleaning can be cleaned in a couple of different ways. Use a good cleaning rag and wring out excess liquid to do the job of diy air duct cleaning.