Advantages and disadvantages of air duct cleaning Increase the efficiency and lifespan of your HVAC. Eliminate the risk of dangerous diseases. A visual inspection is not possible. It was just a filter change. An official website of the United States government Official websites use.
gov. The gov website belongs to an official United States government organization. Knowledge about cleaning air ducts is in its early stages, so a general recommendation cannot be given as to whether air ducts in the house should be cleaned. The Environmental Protection Agency (EPA) urges you to read this document in its entirety, as it provides important information on the subject. Duct cleaning has never been proven to actually prevent health problems.
Nor do studies conclusively show that particles (e.g., this is because much of the dirt in the air ducts adheres to the surface of the ducts and does not necessarily enter the living space).). It's important to note that dirty air ducts are just one of many possible sources of particulate matter in homes. Contaminants that enter the home from both outdoor and indoor activities, such as cooking, cleaning, smoking, or simply moving around, can cause greater exposure to contaminants than dirty air ducts. In addition, there is no evidence that a small amount of household dust or other particles in air ducts poses a health risk.
If any of the conditions identified above exist, it usually suggests one or more underlying causes. Before ducting is cleaned, modernized, or replaced, the cause or causes must be corrected, or else the problem is likely to recur. Some research suggests that cleaning the components of the heating and cooling system (e.g., however, there is little evidence that cleaning only the ducts) improves system efficiency. You may consider cleaning air ducts simply because it seems logical that air ducts get dirty over time and should be cleaned from time to time. As long as cleaning is done properly, there is no evidence to suggest that such cleaning is harmful.
The EPA does not recommend that air ducts be cleaned routinely, but only when necessary. However, the EPA recommends that if you have an oven, stove, or chimney that burns fuel, they be inspected to make sure they are working properly and serviced before each heating season to protect them against carbon monoxide poisoning. If you decide to clean your air ducts, take the same consumer precautions you would normally take when evaluating the competence and reliability of the service provider. Whether or not you decide to clean your home's air ducts, preventing water and dirt from entering the system is the most effective way to prevent pollution (see How to Prevent Duct Contamination).
If you decide to clean your heating and cooling system, it's important to ensure that the service provider is committed to cleaning all components of the system and is qualified to do so. In addition, the service provider can propose the application of chemical biocides, designed to eliminate microbiological contaminants, inside the ducts and in other components of the system. Some service providers may also suggest the application of chemical treatments (sealants or other encapsulants) to encapsulate or cover the interior surfaces of air ducts and equipment housings, as they believe that this will control mold growth or prevent the release of dirt particles or fibers by ducts. These practices have not yet been thoroughly researched and you should be fully informed before deciding to allow the use of biocides or chemical treatments in your air ducts.
They should only be applied, if at all, after the system has been properly cleaned to remove all visible dust or dirt. Knowledge about the potential benefits and potential problems of cleaning air ducts is limited. Since every home's conditions are different, it's impossible to generalize about whether cleaning your home's air ducts would be beneficial or not. On the other hand, if family members have unusual or unexplained symptoms or illnesses that you think may be related to your home environment, you should discuss the situation with your doctor.
The EPA has published the following publications as guidance on identifying potential indoor air quality problems and ways to prevent or solve them. You may consider cleaning the air ducts simply because it seems logical that the air ducts get dirty over time and that they should be cleaned from time to time. While the debate over the utility of regular duct cleaning continues, there is no evidence to suggest that such cleaning is harmful, as long as it is done properly. On the other hand, if a service provider doesn't follow proper duct cleaning procedures, duct cleaning can cause problems with indoor air. For example, an inadequate vacuum collection system can release more dust, dirt, and other contaminants than if the ducts had been left without problems.
A careless or inadequately trained service provider can damage the ductwork or the heating and cooling system, which could increase heating and air conditioning costs or force you to perform difficult and expensive repairs or replacements. This is because much of the dirt that can accumulate inside air ducts adheres to duct surfaces and does not necessarily enter. in the living space. The EPA does not recommend that air ducts be cleaned, except when necessary, due to continuing uncertainty about the benefits of duct cleaning under most circumstances.
Some research also suggests that cleaning dirty cooling coils, fans, and heat exchangers can improve the efficiency of heating systems and refrigeration. However, there is little evidence to indicate that simply cleaning the duct system will increase the efficiency of your system. If you think cleaning your ducts might be a good idea for your home, but you're not sure, talk to a professional. The company that maintains your heating and cooling system can be a good source of advice.
You can also contact professional duct cleaning service providers and ask them about the services they offer. Remember that they are trying to sell you a service, so ask questions and insist on comprehensive, well-informed answers. A thorough visual inspection is the best way to verify the cleanliness of your heating and cooling system. Some service providers use remote photographs to document the conditions inside the ducts. All parts of the system must be visibly clean; you should not be able to detect any debris with the naked eye.
Show the consumer checklist after cleaning to the service provider before work begins. Once the task is complete, ask the service provider to show you each component of the system to verify that the task was successfully completed. Whether or not you decide to clean your home's air ducts, it's essential to commit to a good preventive maintenance program to minimize duct pollution. Whether or not you decide to clean your home's air ducts, it's essential to commit to a good preventive maintenance program to minimize duct pollution. There should be no moisture in the ducts.
Controlling humidity is the most effective way to prevent biological growth in air ducts. You may be familiar with air ducts made of sheet metal. However, many modern residential air duct systems are built with fiberglass panels or sheet metal ducts lined inside with a fiberglass coating. Since the early 1970s, there has been a significant increase in the use of flexible ducts, which are generally internally lined with plastic or some other type of material. Experts agree that there should be no moisture in the ducts and, if there is moisture and dirt, there is a chance that biological contaminants will grow and be distributed throughout the house.
Controlling humidity is the most effective way to prevent biological growth in all types of air ducts. Air duct cleaning service providers may tell you that they should apply a chemical biocide inside the ducts to kill bacteria (germs) and fungi (mold) and prevent their biological growth in the future. Some duct cleaning service providers may propose introducing ozone to remove biological contaminants. Ozone is a highly reactive gas that regulates itself in outdoor air as a lung irritant.
However, there remains considerable controversy over the need and advisability of introducing chemical biocides or ozone into pipelines. While some low-toxicity products can be legally applied while the occupants of the house are present, you may want to consider leaving the facility while the biocidal product is being applied as an additional precaution. Manufacturers of products marketed to coat and encapsulate duct surfaces claim that these sealants prevent dust and dirt particles inside air ducts from being released into the air. As with biocidal products, a sealant is often applied by spraying it on the operating duct system.
Laboratory tests indicate that materials introduced in this way tend not to completely cover the surface of the duct. The application of sealants may also affect the acoustic (noise) and fire retardant characteristics of ducts lined or constructed with fiberglass and may void the manufacturer's warranty. Most organizations dealing with pipeline cleaning, including the EPA, NADCA, NAIMA, and the National Association of Sheet Metal and Air Conditioning Contractors (SMACNA), currently do not recommend the routine use of sealants to encapsulate contaminants in any type of duct. Some cases in which it may be appropriate to use sealants to encapsulate duct surfaces include repairing damaged fiberglass insulation or combating fire damage to ducts.
Sealants should never be used on wet duct lining, to cover actively growing mold, or to cover duct debris, and should only be applied after cleaning in accordance with NADCA or other appropriate guidelines or standards. Indoor Environment Division of the Office of Radiation and Indoor Air (6609J) 1200 Pennsylvania Avenue, N, W. If no one in your household has allergies or unexplained symptoms or illnesses, and if, after a visual inspection of the inside of the ducts, you see no sign that the air ducts are contaminated with large deposits of dust or mold (there is no musty smell or visible mold growth), cleaning the air ducts is probably not necessary. These products are specifically designed for use in ducts or as ducts themselves, and are tested in accordance with standards established by Underwriters Laboratories (UL), the American Society for Testing and Materials (ASTM), and the National Fire Protection Association (NFPA).
