We took some A/C filters that happened to be left around and put them over the vents. ... Small thin brown paper blowing in house through some air vents. October 2005 in THE MAIN WALL. House/HVAC is 2005. ... During the day, i have the heat on and at night I have the air on. We have a 6 month old Lennox HVAC, and the white flakes started coming out of all of the vents when we turned on the heat a couple of weeks ago. In many cases, the HVAC system is not the source. Here are some lessons learned on addressing complaints. Black particles coming out of the ducts is a common customer concern. i recently moved into an apartment complex and every time we turn on the air conditioner, it spits out litte black particles. Then again, this is a lab and we don't mind having 2x3 foot blue filters duct taped to the vents… Can we install filters on the vents? White Flakes/Powder Coming from the Air Conditioning Vents MODEL E90, E91, E92, E93 (3 Series) Vehicles produced from May 31, 2006 to September 9, 2007 SITUATION The customer states that at times white flakes or powder comes from the air conditioning vents. In this article, we’ll explain: Why roaches like air conditioning Hi, Ive had some brown foam being blown out of my windscreen air vents. Flakes coming from my vent. They turn frighteningly black over the course of a month or two. (Great job, by the way. Cold air flows out of the air conditioner, but the warmer air present inside and around the unit causes the formation of small droplets of water inside and around the vents and air ducts. I have been noticing these reddish brown flakes where my ceiling vents are located. Open the furnace compartment. I read everything on a post about the same problem that happened last year in February, but still haven't found an answer. adawn Member Posts: 1. Just started 2 weeks ago. Determine if the HVAC system is really the source. Thanks in advance best to get it looked at. The ac works just fine, but the black pieces are everywhere. Our home is only about 3 years old. Floor vents. ... could be a critter nest getting blown out of the vents ??? Where is this coming from and whats the sure. Well, the short answer is yes: roaches do like air conditioning systems. Just started 2 weeks ago. particles are coming out of my vents and on to my nice furniture. House/HVAC is 2005. This lets more dust settle and build up in the return ductwork. Many thanks for the careful "ber-ceedure".) What could be the cause? Pull out the air filter. UL has investigated hundreds of complaints regarding black particles and the HVAC system. I live in Chicago area so I cover the until both inside and outside to stop the cold air from coming in so I'm wondering if this would build mold, however my bedroom a/c does not have this problem. I live in South Florida and have no problems with the quality of my AC, other than the "snowstorm" of foam flakes that come out of the vents. So you’ve seen the roaches near your air conditioner (or coming out of your air vents), and you’re wondering if these little creatures like your AC for some reason. Combined with dust particles, this small quantity of water provides the perfect ground for mold infestation. If the air filter is clogged with dust, then air flow is being choked off. Small thin brown paper blowing in house through some air vents. Examine the return air registers for dust buildup, particularly if there are thick, fuzzy coatings of dust. Floor vents. Given the amount of foam coming up out of my vents, it surprises me that it's just the flap described and photo documented in the DIY.