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
- People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
- If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.
- Controlling moisture in your home is the most critical factor for preventing mold growth.
- If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or a respirator with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you need to wear an N95 mask.
After natural disasters such as hurricanes, tornadoes, and floods, excess moisture and standing water contribute to the growth of mold in homes and other buildings. When returning to a home that has been flooded, be aware that mold may be present and may be a health risk for your family.
People at Greatest Risk from Mold
- People with asthma, allergies, or other breathing conditions may be more sensitive to mold.
- People with immune suppression (such as people with HIV infection, cancer patients taking chemotherapy, and people who have received an organ transplant) are more susceptible to mold infections. People with a weakened immune system, especially people receiving treatment for cancer, people who have had an organ or stem cell transplant, and people taking medicines that suppress the immune system, should avoid cleaning up mold. Children should not take part in disaster cleanup work.
Possible Health Effects of Mold Exposure
People who are sensitive to mold may experience stuffy nose, irritated eyes, wheezing, or skin irritation. People allergic to mold may have difficulty in breathing and shortness of breath. People with weakened immune systems and with chronic lung diseases, such as obstructive lung disease, may develop mold infections in their lungs. If you or your family members have health problems after exposure to mold, contact your doctor or other health care provider.
Safely Preventing Mold Growth
Clean up and dry out the building quickly (within 24 to 48 hours). Open doors and windows. Use fans to dry out the building. Position fans to blow air out doors or windows.
See the fact sheet for drying out your house, Reentering Your Flooded Home and the Homeowner’s and Renter’s Guide to Mold Cleanup After Disasters.
- When in doubt, take it out! Remove all porous items that have been wet for more than 48 hours and that cannot be thoroughly cleaned and dried. These items can remain a source of mold growth and should be removed from the home. Porous, noncleanable items include carpeting and carpet padding, upholstery, wallpaper, drywall, floor and ceiling tiles, insulation material, some clothing, leather, paper, wood, and food. Removal and cleaning are important because even dead mold may cause allergic reactions in some people.
- To prevent mold growth, clean wet items and surfaces with detergent and water.
- Homeowners may want to temporarily store items outside of the home until insurance claims can be filed. See recommendations by the Federal Emergency Management Agency (FEMA).
- If you wish to disinfect, refer to the U.S. Environmental Protection Agency (EPA) document, A Brief Guide to Mold and Moisture in Your Home[1.4 MB, 20 Pages].
If there is mold growth in your home, you should clean up the mold and fix any water problem, such as leaks in roofs, walls, or plumbing. Controlling moisture in your home is the most critical factor for preventing mold growth.
To remove mold growth from hard surfaces use commercial products, soap and water, or a bleach solution of no more than 1 cup of household laundry bleach in 1 gallon of water. Follow the manufacturers’ instructions for use (see product label). Use a stiff brush on rough surface materials such as concrete.
If you choose to use bleach to remove mold:
- Never mix bleach with ammonia or other household cleaners. Mixing bleach with ammonia or other cleaning products will produce dangerous, toxic fumes
- Open windows and doors to provide fresh air. Use fans to dry out the building. Position fans to blow air out doors or windows.
- Wear non-porous gloves and protective eye wear.
- If the area to be cleaned is more than 10 square feet, consult the U.S. Environmental Protection Agency (EPA) guide titled Mold Remediation in Schools and Commercial Buildings. Also available is A Brief Guide to Mold, Moisture, and Your Home.[1.4 MB, 20 Pages]
- Always follow the manufacturer’s instructions when using bleach or any other cleaning product.
- For more information on personal safety while cleaning up after a natural disaster, see Response Worker Health and Safety.
If you plan to be inside the building for a while or you plan to clean up mold, you should buy N95 masks (or respirators with a higher protection level) at your local home supply store and wear one while in the building. Make certain that you follow instructions on the package for fitting the mask tightly to your face. Even if you go back into the building for a short time and are not cleaning up mold, you still need to wear an N95 mask.”
Original Article Source: https://www.cdc.gov/disasters/mold/index.html
Maintaining a healthy home goes beyond dusting and vacuuming. When is the last time you checked your smoke alarms? How about the last time you cleaned out your dryer vent? Follow the tips below to make sure your family and home are ready for a happy, clean spring season.
Grab a ladder, and check your gutters for debris. Remove as much as you can with your hands (Don’t forget to wear gloves!). Remove any leftover gunk with a garden hose. Take off any nozzle and have a helper turn on the water when you’re ready. Shove the hose into the downspout to power out of gooseneck bends. Make sure your downspouts channel water at least five feet from foundation walls.
Scrub Walls, Baseboards and Outlets
Scrub all the walls — in the bathroom, kitchen, bedrooms and living areas — with a sponge or brush and mild soap and water. This includes baseboards and outlets. Make sure to completely dry outlet covers before replacing.
Replace all filters including water, range hood and air vent filters. You should replace these filters every 3-6 months depending on the type of filter you have.
Clean Faucets and Showerheads
Unscrew the faucet aerators, sink sprayers and showerheads, and soak them in equal parts vinegar and water solution. Let them soak for an hour, then rinse with warm water.
Sarah Wilson / Getty Images
A clogged dryer vent can be a fire hazard. To clean it, disconnect the vent from the back of the machine and use a dryer vent brush to remove lint. Outside your house, remove the dryer vent cover and use the brush to remove lint from the other end of the vent line. Make sure the vent cover flap moves freely.
Hire a window-cleaning service to clean all exterior windows.
Photos: Christopher Shane/Styling: Elizabeth Demos
A house with a crawl space has vents along the foundation walls. The vents provide air circulation that helps prevent excess moisture and mold growth, and they prevent critters from taking up residence underneath your home. The screens collect leaves and other debris from fall and winter. Spring is a great time to clean them out and check for damage. Clean the vents by hand or use a shop vacuum. Repair any damaged screens — critters can get through even the smallest holes.
Your grill has most likely collected dust during fall and winter. Help your grill live a long life with these maintenance tips, whether you have a charcoal or gas grill.
You can’t have a successful garden without good soil. Follow these tips on how to prepare your soil to help you grow a lush garden.
Test smoke alarms and CO detectors, and change out batteries as needed. It’s cheap, only takes a few minutes and can save your family’s lives.
Mold spores don’t receive nearly the attention of the Big 3 tormentors of the allergic – grass, trees, and ragweed
– but allergy experts say it’s a big reason why some continue to suffer even after those seasons wind down.
For those sensitive to mold spores – not to be confused with indoor mold – the first day of Fall 2016 was a landmark day.
With the Thursday morning report, the spore count hit an all-time high of 19,990, according to the Asthma Center’s Dr. Donald J. Dvorin, the official counter for the National Allergy Bureau for the last 30 years.
Consider that 7,000 – that’s the number of spores that pass through a refrigerator-sized parcel of air in a 24-hour period – is considered “extreme.”
Unlike the Big 3, these are spores produced by fungi, rather than pollen grains.
They typically show up in early spring and persist in the fall until the weather turns cold. The Asthma Center says the numbers are highest midsummer to late fall.
Conditions this week have been perfectly aligned for a harvest of mold spores, Dvorin said.
They love to grow on fallen leaves, of which we have plenty around here. The rains Monday might have given them a production boost, and the subsequent warmth and dryness have been ideal for flight.
Inhaling the spores can trigger a reaction that apes that of inhaling tree, grass, or ragweed pollen.
The tree and grass seasons are done, and ragweed is winding down, so if you’re still feeling like you’re under attack from pollen, the culprit might well be a spore.
Mold spores might be the under-the-radar ugly ducklings of the allergens, but about 60 percent of Asthma Center patients who complain of grass, tree, or ragweed allergies also react to mold spores, Dvorin said.
For more on the spores and pollen, check out the Asthma Center site.