Knowledge about the potential benefits and possible problems of air duct cleaning is limited. Since conditions in every home are different, it is impossible to generalize about whether or not air duct cleaning in your home would be beneficial.
If no one in your household suffers from allergies or unexplained symptoms or illnesses and if, after a visual inspection of the inside of the ducts, you see no indication that your air ducts are contaminated with large deposits of dust or mold (no musty odor or visible mold growth), having your air ducts cleaned is probably unnecessary. It is normal for the return registers to get dusty as dust-laden air is pulled through the grate. This does not indicate that your air ducts are contaminated with heavy deposits of dust or debris; the registers can be easily vacuumed or removed and cleaned.
On the other hand, if family members are experiencing unusual or unexplained symptoms or illnesses that you think might be related to your home environment, you should discuss the situation with your doctor. EPA has published the following publications for guidance on identifying possible indoor air quality problems and ways to prevent or fix them.
You may consider having your air ducts cleaned simply because it seems logical that air ducts will get dirty over time and should occasionally be cleaned. While the debate about the value of periodic duct cleaning continues, no evidence suggests that such cleaning would be detrimental, provided that it is done properly.
On the other hand, if a service provider fails to follow proper duct cleaning procedures, duct cleaning can cause indoor air problems. For example, an inadequate vacuum collection system can release more dust, dirt and other contaminants than if you had left the ducts alone. A careless or inadequately trained service provider can damage your ducts or heating and cooling system, possibly increasing your heating and air conditioning costs or forcing you to undertake difficult and costly repairs or replacements.
You should consider having the air ducts in your home cleaned if:
There is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system. There are several important points to understand concerning mold detection in heating and cooling systems:
Many sections of your heating and cooling system may not be accessible for a visible inspection, so ask the service provider to show you any mold they say exists.
You should be aware that although a substance may look like mold, a positive determination of whether it is mold or not can be made only by an expert and may require laboratory analysis for final confirmation. For about $50, some microbiology laboratories can tell you whether a sample sent to them on a clear strip of sticky household tape is mold or simply a substance that resembles it.
If you have insulated air ducts and the insulation gets wet or moldy it cannot be effectively cleaned and should be removed and replaced.
If the conditions causing the mold growth in the first place are not corrected, mold growth will recur.
Ducts are infested with vermin, e.g. (rodents or insects)
Ducts are clogged with excessive amounts of dust and debris and/or particles are actually released into the home from your supply registers.
Original Article Source:https://www.epa.gov/indoor-air-quality-iaq/should-you-have-air-ducts-your-home-cleaned
House fires are terrifying because the flames can cause intense bodily harm that results in serious injury and even death. Once the fire is put out, many homeowners are relieved in the sense that the threat to their life or health has ended. However, the flames themselves are not the only potential source of health issues. Many of the byproducts of a fire are toxic. Fires leave behind smoke, soot, corrosive byproducts, and even mold that negatively affects your health. It is important to know the health risks caused by the byproducts of a fire to keep yourself and your family safe in the aftermath.
All fires involve smoke and everyone knows that smoke inhalation is extremely dangerous because of the chemicals it contains. Smoke is the byproduct of incomplete combustion and contains the following toxins:
Carbon Monoxide (CO) and Hydrogen Cyanide (HCN): The potential health effects of carbon monoxide are well known as many homes have carbon monoxide detectors for safety. Less people know about the risks of the other major chemical in smoke, hydrogen cyanide. Hydrogen cyanide is over 30 times more toxic than carbon monoxide and inhaling a combination of both can be deadly. Smoke inhalation is the leading cause of fire related deaths.
Chemicals from Burnt Materials: When materials such as wood, drywall, and flooring are burned in a fire, they release hundreds of chemicals in the smoke that are harmful to your health. Some of the dangerous chemicals released by burning household materials include hydrogen sulfide, hydrogen chloride, carboxylic acids, nitrogen oxides, acid gases, sulfur dioxide, and much more.
After the fire and smoke have cleared, there is still a substance present that can spread throughout the home and cause health issues as well as property damage; soot. Soot is dangerous because it spreads and settles everywhere including the air ducts where it can get redistributed into the air. Most health problems caused by soot result from inhalation but soot can also get absorbed in the skin and eyes. The main health effects from soot include lung irritation and respiratory issues such as bronchitis and asthma as well as more serious issues including heart attack, stroke, and even cancer.
Few people associate mold growth with house fires but if a house fire is extinguished with water, this excess moisture can quickly lead to mold growth. Moisture is the main cause of mold growth and organic materials that are wet from putting out the fire can become contaminated with mold within 48 hours. Mold not only adds to the health risks already present after a fire, but also causes even more property damage that makes the restoration process longer and more expensive.
If a fire breaks out in your home, make sure that everyone evacuates safely and do not return to your home until it has been restored and deemed safe. The byproducts of a fire are just as dangerous as the fire itself and can cause serious health effects long after the fire has been put out. It is of extreme importance to begin the fire damage restoration as soon as possible by hiring professionals that can safely remove dangerous byproducts from soot and smoke. These professionals have effective cleaning products and personal protective equipment to keep themselves safe during the restoration process
Expert in emergency fire and water restoration services, fire cleanup and water damage cleanup, mold removal, as well as carpet and upholstery cleaning services. Contributor to several restoration and cleaning blogs.
Did you know that, according to the U.S. Centers for Disease Control and Prevention, more than 25 million Americans, including roughly seven million children, have asthma? It’s true, and those numbers have steadily risen in recent years.
Asthma is more than occasional wheezing or feeling out of breath during physical activity. Asthma is chronic and can lead to coughing, wheezing, shortness of breath, fast breathing, and chest tightness, states the Asthma and Allergy Foundation of America. In the 21st century, people spend significant time indoors at home, school or work, and indoor air environments could be triggers for asthma. Improving indoor air quality can help people breathe clearly. The AAFA notes that the following agents can adversely affect indoor air quality, potentially triggering asthma attacks.
Allergens such as mold, dust mites, pet dander and fur, and waste from insects or rodents thrive in many homes. Ensuring indoor air quality is high can cut back on the amount of allergens in the air. People with asthma can invest in an air purifier and vacuum regularly, being sure to use a HEPA-equipped appliance. Routinely replacing HVAC system filters can help prevent allergens from blowing around the house. Also, frequent maintenance of HVAC systems will ensure they are operating safely and not contributing to poor indoor air quality.
Mold can be mitigated by reducing moisture in a home. Moist environments in the kitchen and bathroom may promote mold growth. Ventilation is key to keep mold at bay.
Thirdhand smoke, or THS, may be unfamiliar to many people. A 2011 report published in Environmental Health Perspectives says THS is an invisible combination of gases and particles that can cling to clothing, cushions, carpeting, and other materials long after secondhand smoke has cleared from a room. Studies have indicated that residual nicotine levels can be found in house dust where people smoke or once smoked. Studies have indicated that smoke compounds can adsorb onto surfaces and then desorb back into air over time.
Keeping tobacco smoke out of a home can improve indoor air quality and personal health.
Volatile organic compounds, or VOCs, are gases released from commonly used products. These can include paints and varnishes, cleaning supplies, air fresheners, new furniture, and new carpet. People with asthma may find that VOCs can trigger attacks. Airing out items, reducing usage of products that are heavily scented and choosing low- or no-VOC products can help. Making cleaning products from baking soda, vinegar and liquid oil soap also can keep indoor air quality high.
Homeowners who plan to renovate their homes can consider using the appropriate specifications for HVAC systems to promote good indoor air, as well as address any other potential problems that may be compromising indoor air quality.