If you see black spots or black dust appearing around air vents, there's a good chance that mold is growing inside. These black spots are usually difficult to wipe off, and if it has a wet, slimy texture, that's another indication of black mold.
Yes, mold in air ducts can potentially make you sick. When mold grows in air ducts, it can release spores and other particles into the air, which can be inhaled by individuals in the building.
Vinegar: It's common to see mold on ceilings near moldy HVAC vents. To clean it, pour vinegar into a spray bottle, spray the moldy area, and wait one hour. Soak a clean cloth in plain water and wipe away the mold. If you find hardened fungus and stains, use a scrubbing brush with firm bristles.
How harmful is black mold? Evidence suggests that black mold is no more dangerous than other types of mold. However, exposure to black mold can cause some people to experience allergy symptoms. Black mold exposure may lead to more serious complications in people with underlying health conditions.
Black mold can cause health problems, so living in a house with black mold is not advisable. If you must stay in your house while black mold is being removed, make sure to seal off any areas where black mold is present and avoid coming into contact with it.
Your local Aire Serv can identify the root cause and stop mold from re-infiltrating your HVAC air ducts with tools like dehumidifiers. Our service professionals are dedicated to keeping your home's air healthy and your HVAC working its best with air duct cleaning, installation, and repair services you can rely on.
Homeowners insurance doesn't usually cover mold damage or removal unless it's the result of a covered peril. If the mold in your residence was caused by something sudden or accidental, such as a bursting pipe or some other covered incident on your policy, you may be protected.
Removing mold infestation from air ducts requires the use of professional techniques and tools. The project may cost somewhere between $550 to $2,200, as the cleaners have to be thorough to ensure that no spores are left behind.
The presence of visible mold is another giveaway. Look out for black spots or black dust around your air vents or AC vents. This could appear as tiny specks or as larger patches. Noticing these on your vent indicates a potentially larger mold problem lurking within the vent system.
If you go the DIY route while testing for black mold, you will need to purchase a mold testing kit from a hardware or home repair store, take samples of the air and affected areas yourself, and then send these in to a testing facility, which will report back as to which type of mold is present.
Since the interior of your air ducts is prone to some degree of moisture accumulation, it's not uncommon for mold to develop. And if you've never had professional duct cleaning before, there's a definite chance that hazardous mold is colonizing your HVAC system.
Black particles from the HVAC system are typically mold, rust or insulation. You should inspect air handling units, variable air volume (VAV) boxes, reheats, induction units and heat pumps, or secondary units serving the area of concern.
For a natural solution to getting rid of black mold, combine one part baking soda with five parts distilled white vinegar and five parts water in a spray bottle. Alternatively, you can use a chemical-based mold and mildew remover, all-purpose cleaners, bleach or dish soap.
DIY Mold Cleaner: The Baking Soda, Detergent, Water Solution, or Using Bleach or Vinegar. One of the most effective ways to remove mold from your air ducts is by using a homemade solution of baking soda, detergent, and water. This mix is efficient and safe for your health and the environment.
Vinegar is better at killing mold because it can work on both porous and nonporous surfaces. It also terminates molds at their roots so the mold won't return and is also safer than bleach. You can even combine it with baking soda to make it more effective.
The Negative Effects of Mold in Air Vents
Aside from a musty smell, mold spores can cause people to experience health problems, such as coughing, sneezing, nasal blockage, itchy eyes, skin irritation, breathing difficulties, stuffy nose, runny nose, headaches, and other allergy-like symptoms.
Use an EPA-registered disinfectant labeled for HVAC use to clean non-porous surfaces (Ductwork, coils, plenums, pans, etc) of mold, mildew, and other dirt. BIOSPRAY-TOWER ready-to-use disinfectant and mold cleaner will kill and remove mold, mildew, and odor-causing bacteria.
Home Size: Installing ductwork in a small 1,000-square-foot home can cost as little as $1,400. In a 2,000- to 3,000-square-foot home, it can cost from $2,800 to $6,700, while the same project in a 4,000-square-foot home can cost as much as $9,000. ¹
The next time the mast cells encounter black mold spores, the mast cells release histamine and other chemicals. Histamine is what causes your immediate allergy symptoms. Your symptoms develop very fast — usually within seconds or minutes. The other chemicals can cause ongoing inflammation.
Mold remediation costs $2,365 on average, but it can cost between $375 and $7,000, depending on location, type, and size of infestation. Mold removal often requires replacing or significantly renovating your home's materials, making the costs tricky to calculate.
In most cases, homeowners insurance policies do not cover mold damage as it's often tied to home maintenance. Homeowners insurance policies may provide coverage to remove the mold as part of the mitigation effort to restore your property from a covered peril.