Questions tagged [condensation]
Use this tag for questions that involve the unwanted appearance of condensate or liquid water from an air stream that contains water vapor. Most often water condenses out of a warm air stream containing water vapor due to a change to a lower air temperature or the air stream passing over a cool or cold object such as an HVAC evaporator coil.
189 questions
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Dryer vent thru closed closet
We ran the dryer vent through the closed closet, as shown in the picture
However, after using the dryer, I noticed condensation forming. Initially, I suspected there might be gaps in the wall or vent,...
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Small stains on my bathroom ceiling. Should I be worried?
Pictures: https://imgur.com/a/MTtpnBS
These spots have been around for a few weeks now. Faint grey but noticeable enough. Completely solid to touch other than what feels to be a small hole (see ...
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How can I minimize condensation on the windows?
With the winter months here, I get condensation on my windows where the internal grilles are. I'm assuming because these are metal and colder, the change in temp draws the condensation there. Any ...
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Condensation in bathroom , need advice
I have a small bathroom, but with 4 of us in the house all showering each day, the moisture builds up, and the walls are dripping.im seeing mold appear and having to clean it off couple times a year , ...
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Remove calcium deposits between panes of vinyl sash window
A friend moved into an apartment with vinyl sash windows that have white deposits on the inside faces of the double glazing. I think these are manufactured sealed units that have failed.
I hope a ...
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Condensation in ceiling when attic door is open
I opened up my attic today to run some cabling for security cameras and I noticed significant condensation on the ceiling. When I closed the attic door it went away.
Should I be concerned? What is ...
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Minimum loft size for positive input ventilation?
I'm having our roof redone and would like most of it to be vaulted. However, I'd also like a positive input ventilation unit to increase air movement through the house and reduce condensation. I'm ...
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Condensation on spray foam in basement
I am in the progress of having a home built and we are presently at drywall stage so humidity is fairly high in the house. Our 6’ concrete crawl space will be heated. We have two construction heaters ...
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Adding insulation to a loft conversion & condensation build up concerns
I just moved into a property and I want to get some insulation added to the existing loft conversion as it gets mighty cold up there. I've had a look via the eaves and there is about 8-10cm of space ...
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What is causing water collection on inside of concrete ceiling
This is a picture from the inside of a 1970's concrete build house in the UK; as far as I can tell there is no cavity wall (definitely no insulation) so that both walls and ceiling are exterior facing ...
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How to address frost/condensation on underside of roof decking in attic
located in the midwest with cold winters... Decade old asphalt shingles on ~23 year old house. Recently noticed two minor water spots on the drywalled ceiling and when going into the attic noticed ...
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Why do we have condensation and temperature drop around prefab fireplace?
We moved to a house with a wood burning prefab (or zero clearance) fireplace that was installed when the house was built (1986). It is in a corner in our living room, diagonal to an exterior wall and ...
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Need help unclogging condensate drain for furnace
https://imgur.com/a/Ov8bRGq
Bryant furnace model: 912SC48060S17
We have sever weather here in Portland, OR and my Bryant/Carrier furnace is blowing cold air with status code 31.
Replaced filter
...
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Condensation and potential mold on inside of arch window
It's a single pane window and the condensation is on the inside of the window. Also, should I cut out what appears to be mold on the wood trim?
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water condensation inside electrical conduit running on attic
Today my TP Link Kasa smart switch started acting strange (turning on and off randomly) - it is broken now. When I hit reset button, a few drops of water dropped out. I removed the plate, pulled the ...
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What might cause this odd condensation pattern on new siding?
I got new siding installed last year (Hardie board). They replaced the sheathing as well (it was that crumbly tar covered stuff) with OSB. They also installed house wrap (as I previously did not have ...
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Cast Iron Sewage Vent Pipe Condensation Freezing Problem
this winter I noticed condensation freezing on my sewage vent pipe. I know I'll need to remediate the area after the fix. Any recommendations or experience with this type of problem? For context if ...
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Discolored wall/ceiling I think from condensation. How do I prevent it further?
Area near ceiling/wall is discolored a little dark, kinda like it's dirty/dusty. Only in master bedroom. There is no door between bed and master bath. I think it's from my wife's long showers having a ...
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how to handle steam/condensation from baseboard steam radiator
The baseboard steam radiator we had installed in 2016 as part of a kitchen renovation often causes water to pool on the (hardwood) floor because steam/condensation from the outlet doesn't seem to have ...
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Vaulted kitchen ceiling but now have moisture between roof and insulation. Possible cause and remedy? [closed]
We're re-doing our kitchen and decided to vault the ceiling. Previously, above the ceiling there was a good amount of attic space but now the insulation is right up against the inside of the roof, and ...
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Condensation/mold on ceiling in bedroom + high humidity
I am having a strange issue wherein along the exterior/west-facing wall of my bedroom (~110sqft/750sqft house) at the junction with the ceiling there appears to be mold growing and some pretty faint ...
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I have doubled up Polysterene 2mm on wall insulation to make 4mm is this ok
I recently applied 2mm polystyrene insulation to my walls with thermal adhesive. I now feel that 4mm would have been better, can I apply adhesive on top of the polystyrene and then add another layer ...
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How do I fix condensation on aluminium step of the front door?
My door frame seems to be insulated well inside all around except door step that is aluminium. That aluminium piece seems lacking the thermal break, and now with cooler temperatures it accumulates ...
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Why is my neighbor's A/C causing my walls to sweat?
Whenever my neighbor runs their air conditioner for an extended period, my room, which shares a concrete wall with theirs, experiences condensation issues (my wall starts to 'sweat'). After ...
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What might cause sporadic small waterspots on ceiling of kitchen?
I have small (ranging from ~1-5 CM) ,sporadically located, water spots on the ceiling of my kitchen that have progressively gotten worse over the last year.
They seem to be right in the dead center of ...
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Is this water heater condensation or leak?
Thanks in advance for reading this and helping me out a bit, as I am not sure if our water boiler needs to be replaced.
We have a AO Smith natural gas water heater that is about 14 years old. During ...
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Can I insulate between a flat roof and a sloping roof
I have an extension on the back of my house which originally had a flat roof. At some point, a previous owner had a sloping roof put over the flat roof which covers it completely (i.e. it is not ...
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Where is the moisture coming from that is condensing on my ridge beam?
I'm renovating my home, and in the course of hunting for a leak in the roof (now found) I removed a strip of drywall that is 8" wide and 16' long, parallel to the 6x12 ridge beam. See image below ...
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HVAC condensation drain and weird concrete bulge [closed]
Does anyone know why I developed a bulge on my concrete near my condensation drain? And what is that copper pipe coming up from the floor?
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Main condensation line drilled and left inside 4"x12" main structural support
Latent defect found by new licensed HVAC technician after original installer of unit said call somebody else. Ten year Carrier warranty now out. Not servicing my area. I called a new company out since ...
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Condensation on air filter
So I purchased my house in 2015 at the age of 24. I was an idiot and did not take care of my new hvac system (replaced when they flipped this house before I bought and is an electric heat pump) like I ...
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What could cause an air conditioner to leak condensation?
For the past couple weeks, there’s been a trail of water leaking from my furnace. I believe it is condensation from the air conditioner. After doing a little research online, I cleaned out the U trap, ...
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Greenish/Gray Mold on all beds and matresses [closed]
I moved to a new apartment unit in the beginning of the year and then I went away for a 2 week trip and when I came back I noticed greenish dust on the the furniture. I google it and found out that it ...
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DIY double-pane window renovation technique? [duplicate]
If a double-pane window suffers from only condensation, can a motivated DIYer separate the panes and spacers, clean them, and reassemble? On a dry day, of course.
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Why plaster in one corner under ground level wet?
One corner of my house plaster wall is starting, this Winter, to show condensations. As you see in the first picture below it's like drops of water starting to form. This is the stair area going to ...
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My condenser dryer is steaming up my kitchen and utility room
An engineer fitted a new pump to my AEG Lavatherm condenser dryer. It still has not solved the problem of a very hot steamy kitchen, when I'm drying my clothes.
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Condensation in bathroom after shower
Everytime you take a shower, the walls and ceiling have lots of water on them. After the shower, some (not alot) of water will come dripping in from the extractor fan duct onto the floor.
Location UK
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Positive Input Ventilation (PIV) suitability for loft with high relative humidity
I live in the UK in a cold 1890s stone walled house which has a condensation issue (partly brought on by lifestyle choice and party due to previous "remedial" works that limit the natural ...
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New external door, lots of condensation
I just had a new fiberglass external door installed (with a half lite). The glass has no condensation on it, but the door itself is covered in condensation!
I installed another door at the front of my ...
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Do I need existing wallpaper to help with external damp wall?
We have a north facing 1st floor bedroom (above a kitchen) which has always typically had some damp issues. It has 3 external walls with blank but painted over wallpaper, that gets replaced every 10 ...
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Condensation pipe from air handler is making gargling sound
I would appreciate some help on a new gargling voice coming from my HVAC furnace (first time using this season - this didn't happen last year).
As shown in picture, there are 2 small tubes coming out ...
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Exterior condensation on some newly installed windows
We installed 5 new windows (3 panes) in our house. 2 of them regularly get exterior (outside) condensation, the others are fine (or get considerably less). This happens when outside humidity is high (...
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What is this thing under my window frame?
I've got 2 windows, one with a block of some sort under the frame, and one without. On the one without, in winter, condensation tends to form on the frame, and then the water trickles down the wall.
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Is condensation a concern on duct work that's enclosed in a soffit?
In my 1973 town-home, which is basically a ranch style layout, there's a single hallway that runs parallel to the length of the unit, bisecting the living area from the bedrooms. It is the only ...
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Floor drain is overflowing next to furnace
We have our furnace on the second floor of our home. There is a pvc pipe coming from the top part and it leads to what looks like a floor drain. The last couple of weeks when our air conditioner is on,...
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How to fix wall with internal water damage
We had some work done in our home and we had the attic exposed, with a window open, and the AC running all day long. This caused one of the ducts, which lacked insulation, to sweat and drop all the ...
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Home condensation pump emptying into sewage pipe. Is this functionally okay?
I was looking at a house and noticed they had a condensation pump for a hot water heater going directly into one of the houses sewage pipes, which empties into the property's septic tank. See images ...
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Should this pipe have condensation inside of it?
Just wondering if it’s normal for some condensation buildup inside this pipe on my HVAC unit. It doesn’t appear at this time that there is enough condensation to drip down onto the electrical ...
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Basement moisture: condensation or leak? [closed]
I have a significant amount of moisture built up in our unfinished basement that’s originating from the well water pump.
I’m trying to decide if it’s even possible that the moisture could be a slow ...
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Why is my AC smelling bad and producing no condensation water?
I have a 10-year Carrier unit. It has two issues.
The AC smells musty when turned on. It smells even worse when I turn on the fan mode after running AC. No smell when running on heat. It's similar to ...
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