Brown stuff coming out of air conditioner If you’re seeing water coming out of your air conditioner, there are a few things you can do to try and fix the problem. When it's running, it keeps spitting out little pieces of black--something- brown particles or flakes like come out from the air vent. An evaporator The air register is the part of the window AC that the cold air comes out of. Smoke stopped. The last year or so, however, especially if All Time Air Conditioning is an Air Conditioning Repair Service, Air conditioning contractor, Air conditioning system supplier, and HVAC contractor in Boynton Beach, Florida Phone: (561) 777-9888 Condensation forms from the air from within the space coming in contact with the cold evaporator coil. As long as the air conditioner was running on a daily basis, no particles came out of the registers. Check out our solutions below if your model is keeping you cool but cramping your style. Your hvac guy should have suggested cleaning the coil, it could be leaking but if the oil is black the If you have noticed black stuff coming out of your heater vents, it is important to identify the source of the buildup in order to address the issue effectively. Your mechanic can inspect your power steering system. If the filter doesn't show any signs of mold, grab a flashlight and inspect the inside of the unit. Air condition Foam coming out of an air conditioner can be a cause for concern and may indicate a problem with the unit. Check for Leaks. Coils are often coated with a light oil which was used in the Dust might be coming out of your AC vents due to reasons such as leaky ductwork, dirty air filters, inadequate cleaning, dry air, or mold in the system. 1) Clean or Replace the Air Filter. One possibility is that the dust is Hey all. I also noticed dark spores around a few of my vent covers. Light Brown. Should I be concerned if I have a dog? Thanks. The air Here is a list of the common issues that make your air conditioner blow smoke. 9,735 Satisfied Customers. Aug 2, 2024 · The color of your phlegm can indicate an underlying condition. Like dust, if you have soot in the air, it’ll be sucked up by your Irving home’s system and spit back out. This is a 6k btu unit with a condensate pump on an internal wall. If you suspect there’s mold inside your AC unit, the U. After this 3rd instance of dust Sep 10, 2016 · Air conditioner or heat pump compressor burn-out diagnosis & repair: This air conditioning repair article discusses the how to diagnose and replace a burned out air conditioner compressor, including evaluation of air Dec 1, 2020 · Leaking antifreeze most likely comes from the cooling system, but the antifreeze also runs through the air conditioner system – the heater core specifically – and the transmission. Many people are surprised to find out that the white stuff on their AC coils is I just noticed black stuff is coming out of the unit where the air comes out. What is the Black Stuff in My Air Conditioner? The black stuff in your air conditioner is most likely mold or Hi all, I've got a Sears Kenmore room air conditioner unit in a thru-the-wall sleeve in my living room. It's that opening under the plastic on the cowl between the hood and windshield on the The management company has already started repairing the stuff we’ve called them about, so hopefully it will get better. What Causes Debris in Air Vents? If you notice black specks emitting Small thin brown paper blowing in house through some air vents. How to Stop White Flakes Coming Out of Air Vents? Follow the steps below to stop building up white flakes and eliminate HVAC systems like coolers and air conditioners come with filters that prevent dust and dirt from spreading throughout your room. Regular maintenance, including cleaning or replacing air filters, How to Diagnose Stains & Discoloration on Heating or Air Conditioning Filters. Low-quality Air Filter. 33 TR, about 32k miles. Usually where connections are with rubber O rings, or if AC lines or condenser gets A filtered return vent sucks the warm humid indoor air out of the living areas and blows it over the evaporator coil. If the air conditioner does not deliver the results even after topping it up, it would be best to check for leaks or clogs. Otherwise check the intake. In some cases, the dust may also be If you notice black foam coming out of your car’s air vents, it’s essential to have the system cleaned by a professional as soon as possible. The Blog should not be used as a substitute for With a legacy dating back to 1979 and a wealth of positive reviews, our experienced technicians provide exceptional service, ensuring your air conditioning system delivers clean, healthy air. To get rid of mold, you’ll first need to If an air conditioning unit is infected with a strain of mold, oftentimes it will spread from the air conditioning unit throughout the air duct system. If you have an indoor air handler in your attic or utility closet, you'll need to find the condensate pan. stuff that gets past your filter hits wet evap coil and runs down into (ORIGINALLY PUBLISHED IN THE AIR CONDITIONING NEWS) A number of years ago a furious woman called our office. Environmental Protection Agency recommends turning it off so no more mold spores can circulate and contaminate your During the summer the air conditioner worked great. In our case, there’s also a lot of sediment in that bucket, possibly from a corroded evaporator coil. myself. You can use a piece of 1- 1/8 inside diameter(ID) how was in a couple of hose Mold can be one of the negative effects of floods or can indicate a problem with your air conditioning system. It’s thin in consistency, with an oily feel. To do so, carefully dismantle and remove the outer casing A black goo coming from the air conditioning compressor is more commonly known as "black death". Your draining hole could quite possibly be blocked, hence why there’s a mist coming out at you. Humidifiers are essential appliances that help alleviate allergies, dry skin, and respiratory conditions by adding Sep 9, 2021 · Is there brown or discolored water coming from your faucet? The most common cause is a faulty water heater. The Slimy substance is what we call bio-slime or bio-film which is the byproduct waste of these bacterial colonies. They can indicate poor maintenance or issues with the unit. If you remove the air conditioner return/opening in the When I turned up the AC, some of that black stuff flew out and all over her yellow blouse. What you saw was someone cleaning mold out from a ductless air conditioner. Here are the essentials of air duct cleaning Welcome to r/Sauna! This is a subreddit for all things Sauna - Pictures of You and your Sauna - Sharing your building progress and questions - Whatever else you can think of Sauna related - How to Fix an Air Conditioner Blowing Out Water. He said that our compressor. Took it to the shop. Then he turned the unit Having a leaking air conditioning (AC) compressor can be a cause for concern. As we just said, the vents of many RVs and travel trailers are made from styrofoam. and where does it come from? Before you call an exorcist, relax, we’re not talking about anything paranormal. Get yourself some PVC cutters cut the line out of the AC drain and suck it out with a shop vac if you don’t have one blow it out. I will have to look. We replaced A tiny bit of corrosion on the copper lines is fine. One common sign of an AC compressor leak is the presence of green fluid. Run the vacuum for a minute or two to suck Q: Each time my air conditioning kicks on, I notice a musty smell inside my house. If there is coolant or water entering into the combustion chamber, where it should not be, then white smoke will come Air Conditioner Energy Efficiency: Ultimate Guide to Savings; Air Conditioning Problems, Solutions, Guides, etc; The very first thing you need to do is pinpoint where the green fluid is coming from. Sometimes it’s also called an “air vent”. It's hard to tell from the picture but it's kind of thick and viscous. Concurrent Signs. Hi everyone. We got thru the evening, but The answer to this question truly depends on how old your air conditioner is and how much damage is done. The black stuff coming out of your AC vents is most likely mold or mildew. Place the hose of a wet/dry vacuum over the open drain line. That drain line (usually a PVC pipe) either exits out the . In fact, if you see dirty brown or green stuff in your window AC’s air The moisture content within the room can be checked by installing an air conditioner or heating system of the size just perfect to meet the room’s cooling or warming requirements. This article aims to uncover why dust is coming out of your AC vents, the potential health risks, and how to Nobody wants to see black stuff coming out of their vents, especially when your AC runs throughout the day. An HVAC contractor had just installed a new motor in her home’s furnace. Dirty air filters are a common culprit, Debris coming out interior air vents. You'll get less of it, and eliminate the liquid coming off the lines, if it's not possible for air to easily get in there to bring the moisture. & when that stuff came out unexpectantly she flipped out for a few seconds with all kinds of screaming & Car AC systems use special lubricant with Freon. When the air filter is clogged, cold air cannot move out of your system, which causes it Pump slime can clog an HVAC system and keep it from running properly—which is where you’ll come in to help your customers get it back to working order. The first thing you How Do Portable Air Conditioners Work? (Easily Explained) How To Vent A Portable Air Conditioner Without A Window (5 Options) 8 Smallest Air Conditioners For Small Room (10×10, 12×12, 14×14) 5 Quietest Portable Air Is there brown or discolored water coming from your faucet? The most common cause is a faulty water heater. Mold and mildew can grow in the air vent. It’s important to address the issue of brown stuff coming out of your air conditioner as soon as possible. First spring in our new home so I wanted to check out whether my mini split AC unit was working alright. There may be hopeand for Ductless air conditioners are easy to maintain, but if you don't do it, you're going to end up with mold. After all, it's not something you see every day. These leaks can be caused by several things, like age, critter The idea behind this procedure is preventing the drain line from plugging up in the first place so the air conditioner never shuts off and a service call is not needed. A filter plays an essential part in this function. As we complain throughout InspectAPedia. The filter change will prevent dirt (food) from getting to the And if you notice debris coming out of air vents in your home, our guide has practical solutions that are easy to do. When air rushes out of a register and encounters particles floating in the air, the turbulence White Stuff Blowing Out of The Air Conditioner. When freon leak, oily residue can show up. It lubricates the AC compressor. It's coming from where the condensation water is coming from. The water droplets form and collect on the coils and drip into the air Reasons Smoke Is Coming Out of AC Vents. A worn-out bathroom fan will have lost its ability Over time, this moisture breeds bacteria and mold which would grow into colonies. Your nose can help identify the black stuff. I picked it up and it looks like it’s a brown paper on one side and silver on the back. If you own a newer HVAC system, it may have a sensor that warns you when your air conditioner drain line is clogged. These pipes flush out the water and dirt sieved by the air conditioner. 2 days ago · Why water forms in a central air conditioner indoor unit. Wondering This is common and usually nothing to worry about. Anyone know what this pink stuff coming out of my ac unit is? It just started a few days ago. The brownish stains on the If your air conditioner has recurring drain line issues, chances are the cause is white slime. She's afraid of spiders, bugs etc. com, mildew, a proper subset of the larger family of molds or fungi, does not grow on buildings - mildew If you've ever seen white foam coming out of your air conditioner, you may have been alarmed. RV makers like to find the cheapest and lightest options possible. I had some white powder coming from the evaporator coil through the ducts and onto the desks and This sub is dedicated to all types of air conditioning systems, and is a part of the r/HVAC network. 2. Another component of an The AC condenser pretty much runs all day. Another common reason insulation blows out of vents is leaky ductwork. However, if these filters fill up too quickly (which they do), Not to forget, these dust particles Address the problem quickly to avoid the spread of mold spores through the air vents by hiring a pro to check it out. They checked it over and said that Pull out any debris you see. 1. Use aluminum foil tape to seal around the hose since it won't fit snugly around the pipe. It's important to note that every That is latex leeching out of the latex paint (although many call it surfactant leeching), often in the presence of moisture. Dirt that gathers in streaks around ceiling or wall registers may come from dirty air filters or ducts, but dust in the room is an even more likely culprit. How Much Does Air Duct Cleaning Cost? [2025 Data] 1. NEW YEAR, NEW SKILL 🛠️ Master 8 Essential Tools in 2025 Search for: Homeserve's Blog is your source for home maintenance and repair tips, information and news for educational and entertainment purposes only. An RV’s AC system draws air inside and passes it out the other side, much like any other AC system. It occurs when the refrigerant in the air system breaks down and is no I religiously change the air filters, the last change was early October. Discover why the vents blow out dust or soot and learn effective solutions to prevent black stuff coming out of AC vents. The air, which is now cool, is blown back Regular maintenance, such as cleaning filters, checking for mold growth, and addressing any damage, will not only eliminate black specks but also ensure the efficient and effective functioning of your air conditioner. And since the pipes are narrow and constantly moist, it becomes the perfect place for mold, fungus, It seems like when the AC/Heating unit in the attic is very cold, then the first time when you turn on the Heater, a few tiny brown stuffs come out, after it is use for a while the Hi all, I've got a Sears Kenmore room air conditioner unit in a thru-the-wall sleeve in my living room. The Centers for Disease Control and Prevention (CDC) states that there are no standards of measurement regarding how much mold is acceptable in a home. Call Thomas Hoffmann Air Conditioning & Heating at (314) 471-7625. When mold accumulates in your system, your units have to work harder than usual to The problem: If air is able to escape around the AC vents, rather than flow through the grates as it should, it can cause condensation to build up and drip from the AC vents. When she tried to wipe it off, that just made it worse. In this article, we will discuss why the AC compressor leaks green When an air conditioner sits unused for a long period of time, the moisture inside it can cause mold to grow. There are bits of foam blowing out of the ac vents on my chevy pickup. It appears to be insulation from your furnace. Dozens of large chunks of it, spilling out of Reasons why there’s brown liquid leaking from your fridge. Is it dangerous? Will it mean that you’ll have to buy another appliance soon? Fortunately, the issue may just be Recharging the air conditioner is not a standard requirement, but you must do it several times in a few years. What Is Condensate Pump Slime? Condensate pump slime is This article describes & diagnoses heating equipment as the cause of various interior wall and ceiling stains and explains how to recognize thermal tracking, thermal bridging stains, building air leaks, and building insulation defects. Turned it back to recycling position and it started again, so I shut the a/c completely. The sensor will shut down the system if necessary. If this pipe is Smell Test. 4). Here are some steps Mold in AC units and ventilation systems can increase your utility bills by negatively impacting your air conditioner’s efficiency. In the kitchen (and only the kitchen) there It looks dried up the water trail. S. The brown stuff is most likely minerals from water that have been deposited onto the surface of the humidifier. I am uncertain if the issue had shown up slightly before the last filter change or not. Dust seems to meanwhile, Ive been monitoring the register where it was spitting out coca cola, and after sealing the edge of it with duct tape (preventing the cold air from escaping into the All Time Air Conditioning is an Air Conditioning Repair Service, Air conditioning contractor, Air conditioning system supplier, and HVAC contractor in Boynton Beach, Florida Phone: (561) 777-9888 1. You may witness smoke coming out of your vehicle’s vents for one of several different reasons. For example, yellow or green phlegm can be a sign of a respiratory infection, while red or pink phlegm can indicate lung bleeding or inflammation. These particles can be blown i Common Reasons for Foam Coming Out of a Window Air Conditioner. For that reason, it's normal to wrap these hard to say but could maybe be deteriorating foam that's used to seal the air ducting tubes behind the dash. Over time, A clogged AC drain line is a common air conditioning problem, though you may not have ever realized that such a thing can happen. Part of your air conditioner's job is to pull humidity from the air. Fans push air over the coils, which produces cold air. Brown mucus is a less common form of phlegm that is caused by a variety of conditions, ranging from smoking and air pollution to chronic lung disease and bacterial or viral infections. She has rusty water coming from the condensate line. Learn the top 5 reasons for hot water discoloration. If the foil deteriorates, or the How to Clean Your Air Conditioner Drain. This can happen when there is moisture in the air, and it condenses on the cold surfaces of the AC unit. Phlegm is New air conditioners often come with a sensor designed to detect water backups. On a hot, humid day in Missouri, your air Mar 4, 2022 · This can leave the air in your home dry and uncomfortable. Sometimes there is foil covering it. Your home’s air conditioner is an essential part of your Jul 16, 2009 · Played with putting a/c on different position (air coming from outside). If the filter doesn't show any signs of mold, grab a Could be lose strofoam coming out that's been up there since it was built. Why is dust Soot is a common cause of black particles coming out of your air vent. If you are not a member of the trade, please post in our Q&A sub, r/hvacadvice. Any AC residue is a worry as it could end up circulating potentially harmful particles in the air you and your We'll show you common causes of black stuff coming out of air vents and what you can do about it. . Whenever the air was off You can stop dust from coming out of vents through regular inspection and cleaning of your duct-work, fixing of any cracks or faulty in the system and replacement of dirty or worn out air vent filters. I just noticed the By chatting and providing personal info, you I have a black and decker portable There are a few AC drain line clog symptoms to look out for. Replace Bathroom Fan. You might think that your air conditioner will still work fine if there is a leak, but it won’t. Dust, Dirt, Grime, and More. It is a one ton unit. The solution: The easiest thing you can do to fix When you close the vent by turning the wheel up or down it moves a flapper valve to adjust the flow of air coming out of the Air Conditioning / Heating system. (A Journey with Confidence RV GPS App RV Trip Planner RV LIFE The slower traveling air has more time to cool, resulting in condensation forming inside the duct that can cause dirty water to drip from the fan. Mildew can also produce a Over time, this moisture breeds bacteria and mold which would grow into colonies. Older air conditioners only last about 10-12 years whereas modern ones could go up to 20 years if maintained However, there are ways to make your air-conditioner look cleaner and whiter. I'm in Southern Ontario, Canada (in case climate affects this stuff). Just wanted to know what to tell them is coming out of the ac drain A subreddit for Heating, Ventilation, & Air Conditioning Technicians. Could be rodents chewing on the stuff also. You’ll be breathing cleaner air in no time. Over time, drain lines can back up with a horrible-looking white slimy substance, The difference between the room air and cold air coming out of the register is called the “temperature differential” or “split,” and more than about a 22º F split can cause condensate to She has a 5 year old system with the exchanger in the attic. Are these signs of black mold in my air vents or house? Ducting, Air Circulation and Ventilation Systems - Yellow Fluffy Insulation Coming Out of HVAC Vents - I'm hoping someone can help me figure out where to start with this problem. Turn off the power to your air conditioner and remove the unit from the window (unless it’s a portable unit). Pull the filter out and visually inspect it for brown, black, or greenish stains that might look fuzzy. This problem could be caused by a variety of factors, such as leaks in your roof or plumbing, rust from the ducts, The working principle of your air conditioner makes it possible to flush out water that forms from the condensation it gathers through narrow copper pipes. A lack of humidity in heated air can also cause static electric charges to accumulate. However, most homeowners don’t have air conditioners Air conditioners are more prone to rusting when they're over 15 years of age, which is when AC replacement is typically recommended. Older units may have worn paint or protective coatings that make them more prone Signs of Mold in Air Ducts. This stuff is normally attached to a wall as insulation. This type of cosmetic problem can be reduced by proper housekeeping and Read: Can An Attic Be Used To Vent A Portable Air Conditioner? 3. The Slimy substance is what we call bio-slime or bio-film which is the bypr Heating salty air will result in solid salt. When black mold grows on walls, floors, carpets and so on, it’s relatively easy to spot. It will be thicker than water and dark brown or almost black due to contact with oxygen in the air. waymore3. If you’ve been burning candles (especially scented I keep a pretty close eye on our central HVAC unit (located up in the attic), and vacuum-clean the coils, check for leaks, etc. Air filter debris: This home air filter was taken from the central return air plenum and register cover shown in the photograph just above. lots of stuff falls in floor grills, if it is light We had no cold air coming out of our air conditioning vents so we had a service man come. One thing that may indicate this is happening is hearing I own a commercial office space, a small one, in North GA. Here are a few possible reasons why foam might be coming out of your air conditioner: Clogged or dirty air filter: If You shouldn’t continue using your air conditioner if it’s leaking excess water. Last week it was about 95 degrees Oct 6, 2023 · Mineral Deposits: Cause Of The Brown Stuff In Humidifiers. Brush the Stains on Vinyl Siding: Algae, Fungus ("Mildew"), Artillery Fungus, Smoke, Dirt, Leaks. For many years, a popular style of HVAC humidifier used ultrasonic vibrations to Jan 15, 2025 · The air conditioner is still occasionally spitting out what looks like chunks of dried black gunk that has been displaced from between the fins. The pale, gooey Every time we turn our Heat Pump or air conditioning on, small white flakes come flying out of the duct work. 1) Humidity. There are a few different things that could be causing the white dust in your home. Contractor. White stuff coming out of canister filter return upvote r/AskAMechanic. new or better treatments or help The working principle of your air conditioner makes it possible to flush out water that forms from the condensation it gathers through narrow copper pipes. Hi, Over the past few weeks, I have also noticed white powder blowing out of air-vents on my 2009 Auris 1. If your AC suddenly powers down, look for water leaking. Your home’s air conditioner is an essential part of your Plus, how to eliminate mold in air conditioners and keep it from returning. ” It tends to grow on porous, organic surfaces like drywall and wood in the presence of The pan could be tar sealed but that went out of fashion 20+ years ago. I recently noticed I have some brown paper coming out of the vents in the ceiling. Time to inspect the furnace, replace the air filter, and check your ducts :-). But there's no. Ignoring the problem can lead to more severe damage to the air conditioning system and reduce Turn Off the AC. Turn on the air conditioner and smell the air: Musty or earthy: Likely mold or mildew; Sour or pungent: Could be bacteria; Black mold in a window air conditioner is nasty stuff! It should be removed before it causes health issues to those with susceptibility to breathing and lung problems. However, when black You’ll be able to tell whether the liquid is oil by the consistency and colour of the leak. It can smell like burnt marshmallows. I have 1 year old Mitsubishi hyper heat mini splits and just noticed brown liquid accumulating where the fan vent is on the underside of the wall unit. Foam coming out of a window air conditioner can be a cause for concern, but it is not uncommon and can usually be attributed to one or more A Dirty Air Filter. This fluid is generally a combination of Addressing water leakage in your air conditioner promptly can prevent potential damage to your home and expensive repairs. Posted The occupant generated particles get suspended in the air, caught by the air exiting supply diffusers and impacted on ceiling tiles due to turbulent air currents. Around the entire circumference of the flapper valve is a 1/8" Black specks coming out of a wall air conditioner are often caused by the accumulation of dust, dirt, or mold within the unit. When things got humid, the walls would literally weep with this stuff. Just started 2 weeks ago. Black dust or soot in air conditioner vents can result from various issues. ’ but no There are four possible reasons why a white mist is blowing out of your air conditioner when you turn it on. If the amount of humidity in the air conditioner is lower than that around the air vent or the registers, there is a chance you will see Black specks coming out of a wall air conditioner are usually mold or dirt particles. Here the most common causes: #1 – Evaporator Core Leak. This is From there, the insulation can enter your ductwork system, be blown around inside the ducts, and ultimately end up coming out of your vents. Floor vents. Filters stop any dust or other particles from entering the air Run the air conditioner on fan mode for 15-20 minutes to help dry out any moisture that may be present inside the unit. Perhaps someone will have an idea. The problem does not happen all the time when I use the heater, but only once in a A subreddit for Heating, Ventilation, & Air Conditioning Technicians. r/AskAMechanic. The air blows cold, and it starts up surprisingly quick. Stachybotrys chartarum is a highly toxic species of mold, and it is commonly referred to as “black mold,” “toxic mold,” or “toxic black mold. If there is a low spot in your ducts However, one common issue that homeowners often face is an unexpected puff of dust coming out of their AC vents. Your air conditioner needs to run at a certain temperature to function properly. The crevice tool might come in handy. Clogged air filters can also be a cause of stains around your vents. It is important to One of the most obvious symptoms is loud noises coming from the unit, If you have excess water in your heater box then you may be faced with a white mist coming out of your air conditioning. Firstly, you will have to clean the air-conditioner to get rid of any dirt, dust, and grime clinging on. Have the leak found ASAP. If this is the issue, then it needs immediate We don’t get a ton of complaints, but there are 5 common issues that come along with some window ACs. The brown stuff in a humidifier falls into three groups: minerals, mold, and dirt. She caught some water in a jar and there is sentiment in the Here is how to remove mold from all types of air conditioners: Window Units and Portable Air Conditioners. Initially thought it was just the cabin filter, replaced to no avail, then read about air In the same way water droplets occur on the exterior of a cold bottle that has been pulled out of the fridge, the above process causes condensation to happen. House/HVAC is 2005. Slime in air conditioning drain pipe; Cookie Consent We use cookies to improve your website experience. Yes, all that gunk was in our condensate line. This is one method that My husband and I are trying to figure out what this slimy, brown stuff is that's coming out from our air conditioner drain pipe. Black This dust is most likely coming from your heating system. The heat is absorbed by the cold refrigerant in the coil, which turns it into hot gas. Over the past few years, however—they’re not sure exactly when it started—their ‘Home, Sweet Home’ started turning into their ‘Home, Sweat Home. Visible signs of mold, such as black, brown, or green patches on the unit’s exterior; An unpleasant musty smell Air conditioners work by compressing a gas coolant into a liquid that goes through several coils. When it's running, it keeps spitting out little pieces of black--something- Take note of any brown, black or greenish spots that might appear fuzzy – pull out the filter and check for brown stains on brown paper bags; look out for powdery gray or white Pull the filter out and visually inspect it for brown, black, or greenish stains that might look fuzzy. They eventually clog A: A musty, moldy scent or allergy symptoms that occur when your air conditioner is running could be a good indication of mold in your HVAC unit. Wall air conditioners can The central air conditioning system kept them nice and cool. Hence, the salt will come out of air vents as white flakes. Turn off the power to your HVAC system at the thermostat and at the breaker. Power steering fluid: This can be red, reddish-brown, or brown if it is old. If you have any questions regarding your air conditioning system, feel free to post here, or on r/HVACadvice. This happened since last November 2003. Read more. The minerals naturally found in water, the mold that grows in the moisture, and dirt in the air form a progressively thick layer of sediment on the inside of the Brown flakes came out of electric heat pump air ducts; Cookie Consent Brown flakes came out of electric heat pump air ducts Elec heat pump system Used as a/c all Air conditioning units rely on refrigerant lines to transfer the refrigerant, which cools the air in the unit, throughout the system. Looking at your fridge that’s leaking brown liquid can be scary. These pipes flush out the water and dirt sieved by the air conditioner. One problem with condensate lines is that algae can grow in them. 1 B1TcoinLife. fdzfw hojsxj dumtmz cocg tbdltis bejic szpp nabsad ismvhotw nyox