Or also depending on the lighting in the vehicle, may only be visible from that vent. It will appear around the home as a slimy, dark greenish-black or gray substance. This comprehensive guide will help you understand symptoms, solutions and other important information about this health-threatening problem. Consult a professional to have the mold removed in a safe, effective way and make sure to also consult an AC pro to prevent a future infestation. I think most of it was caused by dust and the fact that the people smoked. and is there a way to correct it, fix it, stop it. Why is black soot coming from my Electric heating vents? Checked among other things, if the ac was not draining and put in a new air filter, but problem still continues. If you suspect you may have black mold hiding in your air vents, you’ll need to take action to determine what your problem is and take steps to make sure your family is not at risk. Table of Contents This is normal. I just experienced this this morning on my way to work, I had the AC blasting and fog was coming out from a single vent. Duct cleaning and sanitizing are necessary whenever mold grows. If you have a pet, you should change your filters more frequently. With black mold growing in your air ducts, you may notice symptoms like itchy eyes and sneezing growing worse when you’re indoors, particularly when you’re running the AC. Black dust surrounding air vents is a bad sign. Does any one know why it does that ? It still looks like new and runs excellent. Many HVAC technicians find black mold growing in ducts after responding to calls about this kind of debris coming out from room registers. Black mold has a distinctive unpleasant, musty smell. It seems only to be that one vent and she hasn’t seen it anywhere else. I wish I could talk to her because I suspect she’s burning candles in her room. This interaction causes the dirt to adhere to the walls that the conditioned air is being propelled across. If you do a lot of candles in that room, I suspect that’s what’s happening, if it’s soot. The spores of black mold can cause a variety of undesirable symptoms and health problems when inhaled or ingested by humans. Depending on the type of filter you have and the size of your family, you should change your air filters every 30 to 60 days. If you’ve noticed black stuff coming out of your AC vents, it’s most likely either: Soot from candles or your fireplace (the most likely culprit) Mold spores; Dark dust or dirty insulation; Let’s go into more detail about each of these problems and how you can fix them. As the air around the coils cools, the moisture in the air condenses on the coils to form droplets. Elizabeth in Cypress says that she has black soot-y looking flakes, she says, coming out of a vent in her downstairs unit when it turns on. Irritation to mucus membranes of the throat and nose. Flushing allows the rush of cold water coming in from the dip tube to stir up the sediment, so more of it can float around and have a better shot at being pushed out the drain. The only problem is, since installing it in my new apartment, it has been blowing out these weird, flat, paper-like chunks of dirt or something. It will also explain how preventative maintenance from an AC professional can prevent black mold from ever coming into your duct system to begin with. Step 4: Clean and disinfect the ductwork using the proper tools and approved killing agents. How can I balance my up & downstairs A-C units, What temperature difference should I set for…. Black mold is a serious problem that should be treated immediately and professionally. Examine the insulation around your air ducts. If air vents haven’t been professionally cleaned in a while, there will be plenty of dust for black mold to feed on. The high surface-to-volume ratio of fines brings in a lot of air, which in turn causes the fine dust particles to degrade to carbon. If there is black mold growing in your air vents, you may notice a musty aroma when you run your AC. Otherwise, you could end up wasting a lot of time and money in the removal process. We made them tape filters on top of the vents. Also, you need a fresh air in 4-5 hours when the home is occupied to purge indoor pollutants and renew oxygen. Will filters help? We moved into a new (to us) office several months ago that I believe was built in the 1970s for whatever that's worth. However, when black mold starts growing in your air vents, things get a little trickier. One of the main contributors to dirt streaking is the turbulence of the conditioned air coming out of a supply vent. Clean and disinfect the ductwork using the proper tools and approved killing agents. Is the stuff dangerous? 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