Mini Split Condensation Keeps Causing Mildew

What in the meth is going on here?

“The copper line on my recently installed mini split is sweating profusely and water comes out when the insulation is squeezed. Is the normal? submitted by /u/Pippasplace42920 [link] [comments]”

“I had this mini split installed a few years ago and to be honest I have been lacking on the maintenance other than cleaning the filters every few months. The unit started leaking inside and the internet pointed towards the drain being clogged. Mark this one a W in the Ai Google category as it's very clogged. I am having a heck of a time getting it to drain. Two part question is the white PVC my drain outside, and should it be running into the ground? Most of the videos I've seen show the”

“Last pic is before the renovation. Couple questions: Will the lack of space on the right and top of the unit make maintenance difficult? I imagine we will to dismantle the ac so we can take out its plastic cover for cleaning, correct? Will we have moisture issues with the cabinetry on the right? Should I demand they fix this before making the final payment? Appreciate the honest feedback ✌️ submitted by /u/otherworld-dev [link] [comments]”

“Noticed water condensing on the closed vent, and saw this. Is it frost? Will I need to replace it? Touched the metal and it is quite cold. Thank you! submitted by /u/Shutshaaface [link] [comments]”

“hi friends. i am renting a room for a year and the room has this ac unit above the window. not only is it ugly as hell lol but it has a gnarly looking condensation drain pipe pouring into a small bucket that i have to empty every single day. since im renting this room i can’t route the pipe outside. it’s annoying and more than anything, very unsightly. i looked on amazon for a decorative “ac condensation drain bucket” but didn’t get any good products come up. does anybody have some ideas? i was”

“I tore apart my bathroom vanity to treat mold. The mold was due to my AC venting directly into the vanity. Is there any way to vent this properly through a boot or should I just cut my losses and cap the pipe? I've treated the mold and don't want it to return. Thanks for any advice. submitted by /u/riles7915 [link] [comments]”

“Hi everyone, I live in a humid environment but my apartment (room locked and doesn’t touch outside or have any windows either) has a mini split but it keeps dripping from the bottom in the pictures. Am I able to caulk and cover that up? Or what’s the best action. I’m not sure if it’s leaking or just condensation. I always run it at 20c or 68f degrees day and night and even when I’m not home to keep my place nice and cool. Not sure how to stop the dripping or what’s the best plan of action. You c”

“This is going to be a long one. 2007 home, Midwest. I have 2 50 CFM bathroom exhaust fans that don’t suck in air and leave the bathroom walls dripping after a shower. 2 separate bathrooms (50sqft and 100sqft). Took a look in the attic and they both have 4in flex duct that merge via T fitting to another 4in flex duct before traveling roughly 20ft in a straight line to a soffit. This soffit has no vent there and it looks like it just terminates at the perforation which is supposed to be intake for”

“Hey there gents, any advice on my condensate drain of a house I just purchased? My house AC system is 20 years old and struggles in the summer and I noticed that a lot of cold air is escaping in the two circled areas. After some research I think it should have a trap installed before the vent? And then the circled hole in the actual system is blowing cold air out submitted by /u/Afraid_Average_6196 [link] [comments]”

“I'd probably recommend redoing that AC condensate line with hard plastic like 3/4" pressure PVC and fittings and with consistent grade and supported the entire way through with a neutralizer before the drop and into any drain. I'm not sure about code but here, we do air gap so it's not hard piped into the drain itself.”

“I bought my house less than a year ago and have a a/c register under my cabinet for my sink without a toe kick or anything to direct and allow proper airflow. Would this cause this buildup or powdery substance inside the cabinet and is this mold from condensation or just dust? Any help would be appreciated submitted by /u/Suspicious-Fondant-7 [link] [comments]”

“Friday morning I was supposed to have holes in the crawlspace return lines (duct board) taped over, the crawlspace and hvac system fogged and the ducts cleaned. They seemed to have done a good job, no smell for the first day and a half. I guess the fog was masking it. Decided to crawl down there and look if they actually patched the holes, they didn’t. So my question is, should they re-fog everything since I’ve been running the system for a day and a half and the holes weren’t patched? sub”

“Techs came out for our summer system check up and found growth in the above box. There has also been growth and pretty constant moisture on the HVAC vent in my bathroom. The tech gave me some quotes, the most extensive which involved swapping the plenum and all the boxes for the upstairs system, which is where they found the growth. I had another company come out because they were offering free quotes for ductwork and had them take a look. They told me that I needed all new ductwork, which is no”

“Hello, There is water dripping from the A/C condensate line out my window. I did some research and online sources said that this was the secondary condensate line dripping because the primary is clogged. I went up to my attic to look, and i don’t think there is a primary line. What looks to be the primary PVC line, there is nothing connecting it to the A/C unit - it’s just a dead-end PVC sticking out of the wall with some duct tape. So it appears that the only escape for the A/C condensate is th”

“My Daikin FTXS09LVJU has a faint, mildewy, odor. Is there a spray anyone would recommend for that? Thanks! submitted by /u/Elliotomnom [link] [comments]”

“Last night I was laying on my couch when about 4 cups of water poured out of my mini split unit and continued to keep leaking after the initial dump. Maintenance came today and said it was an easy fix, put a ton of hvac tape around the inside, and said it was good to go. I pay an arm and a leg to rent my apartment so my question is, is this normal to fix a leak inside a mini split, or should I be questioning them and asking for a new unit to be put in place? I was lucky I was home when it happen”

“My HVAC condensation drains into a bathroom sink across the house. During the hottest part of the day I can hear a loud whooshing sound coming from the sink, with the occasional "glug" sound every 4-5 seconds. If I close the drain to the sink, it gets a lot quieter. Shouldn't that p-trap looking thing they installed near the unit stop air from being sucked through the line into the air conditioning? Oh and I should mention this is a variable unit, so it only happens when the unit i”

“The value on the right connects to an outlet point for drainage and I can get a such in there and some gunk comes out along with a tiny bit of water. But it's not closing out yet. It's middle of July and this drainage area should be damp all day from the drips of the HVAC. I know this is a recent clog as i check this spot every could of weeks. If I suck out the gunk of the main drainage, it should take care of the standing water in the left valve, right? submitted by /u/Enter”

“Our air handler is located in a humid garage. It was installed here before we bought the house. When the Garage door is open for a few minutes we always start seeing condensation like this. Are there any options to prevent this? submitted by /u/Imp3rialjustic33 [link] [comments]”

“A while back we noticed half of our double wide trailer wasn't getting air we then figured out its because the air duct under the house was full of water. This was because the condensation from the cooling coils was falling down into and around the air mover filling the air duct and vents with water. We replaced the airduct and drained the vents. I also jerry rigged a frying pan and piece of garden house onto the ac connect to a drain pipe. Water still builds up around the air mover. I hones”

“I recently moved into an apartment in Brooklyn with Mitsubishi split units. Immediately upon moving in I noticed that that the apartment felt very humid. I also noticed water running down the wall from the split units (it’s possible that this only happens when it’s on dry mode? I haven’t been able to tell) I got a humidity reader and the apartment stayed around 76% humidity but would sometimes reach upward of 80%. I know NYC gets humid but today for example, humidity outside was at 38% and my ap”

“This is the second summer we've had our HVAC ducts sweat through the ceiling of our family room. (We opened up the drywall last year to confirm, not yet this year but know it's the same issue). Hoping the Internet is better at diagnosing than the technicians we've met. Some context... - It's only happening (as far as we know) in our downstairs family room. - We're in the Midwest where the last two summers have been very hot and humid - The house is kept at around 72 degrees.”

“I recently got a new HVAC unit and they repaired the condenser pipe which was previously leaking water. Now this isn't leaking water but it's sweating throughout the crawlspace. Should I worry about this? And is there anything I can do about it? Right now i have a lot of renovation going on so the door is open and HVAC works way more than what it should be. Would this get back to normal when I'm done with the reno? submitted by /u/Positive-Advice5475 [link] [comment”

“Just moved into a new apartment (built in 60s) and noticed all this while changing the filter. (I know they should do it, it's just less annoying to do it ourselves) This whole thing is very damp with the spongy material on the sides nearly dripping and a cm deep puddle at the bottom. There's also a lot of dead maggots at the opening. The photos also look lighter than the real thing. We HAVE been having some mild respiratory issues but until now weren't sure where it could be from. I”

“So - the home is a new build. We run the A/C at 78 degrees F. There's lots of humidity where we live and we're going through a heat wave. I noticed yesterday on my car what looked like condensation, and again today on my car. When I looked up I noticed this wet spot. To the right is the utility closet with water heater, HVAC, electrical panel. If you look in the area that drops, there's like an elongated dry area, but all around it is wet. It's not soaking wet, but clearly damp.”

“We have been living here just over a month, and Whenever we take showers, the bathroom gets very steamy and water drips from the walls and small bubbles form in the paint on the ceiling. Today I decided to take down our exhaust fan and look as see if it was blocked or crimped. This is what I saw when I took it down, what should I say to our landlord? The air is basically just being recirculated? And no moisture is being removed at all. submitted by /u/ReceptionObjective93 [link] &#32”

“We’re under contract on a house and our home inspector found this on the HVAC plenum, supply register and maybe on the ducting material. He called it a “dark substance” for reasons we all know, but should I concerned about this? submitted by /u/vibevoyage224 [link] [comments]”

“I've recently replaced a 2-zone heat-pump with a new heat pump and a mini-split for the small zone. The mini-split isn't doing as good a job of removing humidity as the zoned system. I've spent a couple months trying various things, but so far no improvement. I'm sure some of sick of hearing from me. The room with the mini-split still has a return and 2 supply vents. They're blocked now. I'm considering a dehumidifier install in the attic space where I could connect it to”

“Good morning fellow peeps, I am in Florida with a 3 ton external unit and a 3.5 ton internal unit. As you can imagine being humid, we have a lot of condensate, and what I’ve noticed is the unit when running seems to form a vacuum, and the condensate makes the float trap cut the power to the internal unit, once thr unit is off, the vacuum it’s built-up is relieved and the water exits allow the system to reset. So far, I have removed the rubber bung that was on the condensate drain at the highest”

“With all of this lovely heat, we have been running our a/c pretty much non-stop, I was in our basement the other day and noticed condensation in the wall cavity that the a/c lines are in. It is an unfinished basement, and I noticed the condensation on the vapor barrier on the wall. Is this due to damage to the insulation on the a/c line? Or a low charge? submitted by /u/Agitated_Age8035 [link] [comments]”

“Recently had my AC replaced. Started noticing water damage in my ceiling all the way down to my basement. Go up to look at my unit and I see the whole bottom side of the AHU is sweating. There’s moisture under the drain pan. Not sure if drain pan is leaking or sweating itself due to standing water? Part of the condensate drain line right at the unit is sweating and when I open up the port in the trap, i see standing water up to the port. Is my drain line clogged? Faulty install of drain line? I’”

“Is this normal condensation in a hot Florida garage or a problem with installation? It was just installed yesterday. submitted by /u/No-King7246 [link] [comments]”

“Good morning. My FIL and I recently installed a senville mini split In my bedroom. It works great but recently I have noticed sometimes it drips indoors at the unit. I noticed that at the same time it is still draining outdoors so I am fairly certain it is not a issue with being level or the drain pan being broken. When I looked at it a bit closer, it seems like it's condensation building up on the inside. I can't be 100 percent sure but I can't seem to find anything else. I'm wo”

“Just started renting a house here in Alaska with an HRV and it seems like both bathrooms have no ventilation at all when the showers are on. At the end of a shower even after 10 mins it’s like a sauna and i barely have the temperature of the water on hot. I pulled the filters out of the HRV and cleaned them, checked the vents for dust build up (dirty but not insane), and reset the breakers on both bathrooms fan switches but seems like the buttons don’t do anything at all. I have my settings on 2”

“Just started renting a house here in Alaska with an HRV and it seems like both bathrooms have no ventilation at all when the showers are on. At the end of a shower even after 10 mins it’s like a sauna and i barely have the temperature of the water on hot. I pulled the filters out of the HRV and cleaned them, checked the vents for dust build up (dirty but not insane), and reset the breakers on both bathrooms fan switches but seems like the buttons don’t do anything at all. I have my settings on 2”

“A few days ago, a damp patch appeared on the wall, as shown in Figure #1. After a bit of troubleshooting, I realized that it was caused by the air conditioner's condensate drain. Apparently, the drain has become clogged, and I'm not sure how to clear the blockage without having to open up the wall. The condensate drain pipes should roughly follow the paths shown in Figure 2, eventually joining into a single drain pipe. I believe the blockage is located in the point where the two drain li”

“This is in bathroom shower area submitted by /u/Impossible-Aside-388 [link] [comments]”

“Has anyone in Houston dealt with legal, insurance, or remediation issues after an AC company caused—or failed to address—serious moisture problems in a home? I recently had a brand-new AC unit installed with a faulty sensor. For more than a week, the system was not operating correctly, and the house became extremely damp. Multiple technicians identified the issue, but the repair was delayed. I also repeatedly requested dehumidifiers while the problem was being corrected. I was told one would be”

“I recently cleared out some mold in my HVAC closet that was likely caused by poor venting and insulation around the plenum, per our mold guy. I consulted with an HVAC technician about the insulation and what I got back was quotes ranging from about $3,000 to fix the plenum to $22,000 to do that, plus completely replace the ductwork and put in new attic insulation. Granted, my ducts are cracked and I do need new attic insulation, but what are the actual short term priorities to avoid mold regrowt”

“The HVAC system in my apartment is located in the closet and is sweating like crazy. I’ve had maintenance come check it out and their solution was to wrap it, which has worked for the past few weeks until today. Any tips on what to do to get this to not sweat? It’s getting the clothes/items I have stored in the top of my closet damp. Last year they got so wet it molded. I live on the top floor of an older building in the Midwest, and my neighbor the floor below said they have not had this issue.”

“As shown in the pic, the circled hole is pouring out water and going all over the floor. It hasn't done that before. I assume the primary line is partially clogged (there is some water flowing through it)?? I don't have any good way to clean it out. Is this something I should just call someone for? Or maybe first try replacing all PVC (which drains into a hole in the basement floor, after taking a bunch of 90deg turns)? Its all 1" PVC I think submitted by /u/Lunatic_Here”

“Basically, the title. It’s in the garage. The smell is only noticeable when it first kicks on. We don’t use it very much, but I figure there’s probably something I should do to address it! Any idea what it is? submitted by /u/AllinHarmony [link] [comments]”

“I’m selling my house in Texas, and the home inspector found condensation stains, possible biological growth around some of the attic ductwork, and staining on the subfloor. He also noted that the HVAC airflow appeared restricted. The HVAC system and ductwork are located in the attic. System is about 7 years old. As part of the sale, I need to identify the cause and address it. I called Radiant, a local HVAC company, for a diagnostic. Their technician found air leakage in the ducts and said the c”

“Hello, Sorry if this might be an easy question. But I have only one AC vent that has condensation. Recently, I have been seeing mold spores. Here is a photo of the vent, and it is located in an upstairs restroom. Any advice as to why it is happening and fix it. The exhaust fan also has some condensation. Thank you, submitted by /u/Fro02 [link] [comments]”

“We had a Mitsubishi mini split installed almost 2 years ago and outside, where the condensation line comes out and goes into our drain there’s a lot of black mold/mildew looking debris. It’s also on the exterior of putty. We don’t have any of this in any other area of our home so we were wondering if this is normal. We had the HVAC company come out today and they said it’s not related to the mini split and the line looks clear. We do have a gutter and a lot of water that gushes out in this area”

“We recently got a heat pump/ AC unit and was told I can remove the intake(photo1). I am now doing a remodel and as I’m plumbing in shower I noticed what I believe to be intake trunk(photo 2-5 is cut and uses joist bays to pull from across the house (photo6) and is actively pulling air. I would like to seal if possible now before tile goes down due to how dirty this is. THANK YALL FOR YOUR HELP submitted by /u/isrreal_mannii [link] [comments]”

“My daughter likes to splash in the bathtub and it is causing what appears to be a serious moldy drywall issue in the bathroom. I cleaned it and painted over it but the issue is back and probably worse now. What needs to be done? submitted by /u/ThickMemory2360 [link] [comments]”

“I have a HVAC system that is 10 months old and I've noticed it is collecting enough water in the drain pan to rust. It's under warranty and I've had two techs come out. One cleaned up the water and resealed the condensation line. Then the water came back and the second tech said that's a normal amount of water. I've got serious doubts that this company is being honest with me and I suspect the install was botched. I've asked for a full inspection and for anything amiss to”

“Came across this in a 15 year old condo in Philly. No other issues or evidence of water damage in the unit but something going on with the HVAC. Appears someone replaced part of it but did not clean up the damage. And there is some weird rust on the ceiling register - not sure if that is related. submitted by /u/NeverTooMuchTech [link] [comments]”

“Original homeowner, 24 year-old home. Central air. This has never happened until now. Some backstory/clues: we were told two years ago there was a slow leak in the refrigerant when we replaced with R-32. Finding the leak proved negative, it’s not at any of the accessible joints. It’s likely somewhere behind drywall. A few weeks ago was part of another issue, our tech took a look and we were a little under pressure. In topping off, he over pressured and then adjusted. My thought: could that over”

“This complete HVAC system was installed last year. There is a pump for the condensate line and it appears to be working fine. I hear the pump come on and the water draining into the drain lines. Why is there water leaking here next to the condensate drain? submitted by /u/RRhomey [link] [comments]”

“Hi all, just seeking some advice. My condensate line discharges by the side of the house where the outside unit is. As you can see from the pic, the vinyl pipe that carries the water out just comes out to the brick. So it dumps the water right there, and also wets the brick every time. I've lived here 15 years and its posed no problem, but i have always wondered how i perhaps extend this a little to keep it away from the house. I add river rock below every few years so it doesnt erode the so”

“Had my mini split replaced. Should these copper lines be exposed? submitted by /u/Glaulau [link] [comments]”

“We have a small bathroom next to our pool. We just built it last year. It has a mini-split in it to provide A/C and heat. I noticed last year that when you opened the door, the mirror over the sink got super wet from condensation, so I turned the thermostat up some so it wasn't as cool in there. It has been sitting at 78 degrees all summer, and I went in there today and noticed that the teak bench has white powdery mildew on the back and undersides. I don't know if it was there last year”

“A couple weeks ago I had a brown out where my scroll compressor was out of balance and spinning backwards for a little while. Can you guys listen to this and tell me if it sounds OK? Specially, the little rattling/chain sound that I hear (second half of vid). Thanks. Ruud UAND-030JAZ Install 2008 submitted by /u/TimeThruSpace [link] [comments]”

“See attached photo. I discovered a clogged condenser line which feeds to a sink pea trap downstairs. I am unfamiliar with the reason for 2 open pipes on the clean out. What is the purpose of the one upstream (left)? Edit: also while I’m here, is the other pipe running underneath connected to the drip pan another cleanout line? submitted by /u/GigemAg18 [link] [comments]”

“I got my new unit installed couple days ago, and everything seemed fine. The hood was overlapping a bit outside of the original trim on one of the sides, but it was beatufully sealed from every where. It didn't look great, but in terms of functionally if was pretty good. Without me bringing it up, the installer told me that hood is not the right one (I'm sorry I didn't take any pictures of it) and that they will bring another one that's going to be a better match. This is the new”

“I had someone come out to fix my AC because my capacitor broke. However, they said they won’t fix it because the machine is unsafe. The sealant on the machine is not proper and said we are breathing in carbon monoxide. They pointed at the silver sealant that isn’t up to code- see pictures. Said I’m currently breathing in carbon monoxide. Thoughts? Legit or trying to upcharge? Basically wanted to quote at least thousands of dollar to move the machine and properly seal it. submitted by”