Most people probably don't know that one cleaning of air ducts gets rid of about six pounds of dust. Indoor air should be changed regularly to keep it free of pet hair, pollen grains, and dust particles so that it stays clean and healthy enough for people to live in. If you don't clean the AC ducts from the best ac duct cleaning Dubai in your home regularly, dust builds up on the insides of the duct lines. This reduces airflow and sends dirty air back through your home.