by The U.S. National Archives

Air ducts are actually the pipes which are responsible for the distribution of heat to various areas in the building, office or the home. They are made up of materials like metals or plastic and are hollow from inside. The advantage of the hollow structure is the proper ventilation of hot air throughout the building. They are generally installed within the building either underground, or are suspended in a proper manner from the ceilings. Atmospheric oxygen also enters these ducts and the dust particles get accumulated on the sides of the ducts of the furnace. In some cases the molds grow on the metal surface of the pipes and you have no alternative other than to clean your duct internally or if still the mold keeps on growing then the replacement of the duct. Therefore these ducts must be cleaned so that no diseases spread among the people of the nearby area. In addition to this certain respiratory problems can be created. Therefore these ducts may be cleaned. In order to clean these ducts there are various methods. By using the chemical biocide we can kill all the bacteria and the infectious agents inside these ducts. We can also make use of sealants for this purpose as they are also helpful in killing germs. Home owners should be regular in cleaning their air ducts so as to maintain a healthy environment. All these ducts are usually of different sizes. The methods include the vacuum distillation. In this method air at high pressure is pumped through the ducts and it removes all the dust particles from it. All the coagulated particles get removed from their adherent position moves and goes out of the out coming air. This method can not be practiced at home as there can be produced enough vacuums pressure but the industries most usually use this method.

Another method is to put filters at the opening of these ducts so that when ever the air enters these ducts the dust particles get filtered and does not get accumulated in the pipes. We can pass the hot water from inside these ducts in order to clean them. We can seal these ducts from the area of leakage so that no pollutants get entered in your house. If you do not clean these ducts then a diseased air would spread in your house and it will cause the diseases like headache, nausea, nasal congestions and other sinus problem and the members of your family will more frequently get sick due to the rapid and recurrent spread of diseases. Another factor that have been noticed is that due to no proper cleaning of ducts the ventilation system within the house get filthy and a bad smell is produced within the house in addition to it, it takes more time within the room to get cool or hot and as a proof you see an increase in the utility bills in your house. Therefore these ducts must be cleaned to maintain a healthy environment by breathing clean fresh air and also to bring down the energy expenses.