Good air circulation from properly working air ducts is beneficial for a number of reasons. The forced air system within your home or office is meant to deliver fresh clean temperature controlled air for those within the rooms. If you have been noticing higher than usual energy bills this may be a sign that your air ducts need to be cleaned. The forced air system within your home or office runs on electrical power. The blower forces air into the room through duct work piped into every room. Pushing large volumes of air takes work and this work is provided by the electrical power. If the ducts are dirty and in need of cleaning the amount of energy needed to force the same volume of air into the rooms will increase.