Questions tagged [humidity]
The humidity tag has no usage guidance.
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Humidistat Fans - Are they useful at all?
I have a humidistat which is basically connected to a blower and intake vents in each of my 3 restrooms and 1 in the kitchen.
In each restroom, there's additionally a switch to turn on the central ...
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Electric front load dryer making room extremely humid and wet
My front loader electric dryer makes the room extremely humid and hot and it also forms condensation inside its display. The vents are not blocked and they are not leaking. It's a brand new dryer. ...
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Is this a water leak or condensation in the wall around my dryer vent?
I pulled my dryer out yesterday to clean the vent and tubing. When I moved the dryer I noticed what looked like a huge wet stain around the vent connection that leads to my attic. There appears to be ...
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What can replace a dryboard in a cold, moist house?
The dryboards (?) in my summer house are starting to crumble. They have been here for at least 50 years, without any issues, but ever since no-one is living there permanently (4 years ago), they are ...
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How to insulate a wood garden shed to house a small 7’x7’ heated above ground therapy pool
We are having a wood shed 12’x14’ built to house a small (7’x7’) above ground heated therapy pool so we can use it year round. The shed/building is being built on a gravel pad with no wooden floor due ...
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Humidity level in Attic vs outside
My attic humidity level is 85% but on the outside when I can my location in the weather app the humidity is 85%. My question is, is it normal the humidity level in my attic same as the humidity level ...
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Why does condensation appear on surface of window, but not all of them?
When I woke up this morning (a beautiful winter morning), I opened my curtains and noticed that the middle pane was covered in surface condensation, but the two adjacent panes were almost completely ...
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Any problem to build a house that covers a same-sized hole in the ground? [closed]
I have recently bought a piece of land to build a country cottage and perhaps eventually move there permanently. The terrain is sloped with only a few flat spots. The former owners dug a large ...
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Does a portable fan work for drying the bathroom?
If a bathroom has no windows and doesn't get completely dry after a shower (neither do the towels, and the ceiling starts to grow black spots of mold), can a regular fan dry everything after the ...
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Why is my aircon increasing relative humidity?
My HVAC unit in the bedroom seems to increase humidity when turned on. I live in the tropics so humidity is 50-80% on average. Even if its 55% outside turning aircon on it seems to reach a level ...
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Should I expect a whole-home humidifier to provide consistent humidity throughout a 3-story townhouse?
I'm looking to install a whole-home humidifier in my 3-story townhouse in northern Virginia. I already have trouble keeping a consistent temperature throughout the 3 stories - should I expect similar ...
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Piping humidified air through a wall
I have very low humidity in an upstairs bedroom. For various reasons I cannot keep the door closed, so your average "single room" humidifier doesn't move the needle. It's a cold climate, so ...
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bathroom switches into a pir/motion sensor
I have a two switch box in my bathroom that controls a ceiling fan and light. I bought a TDHOS5, Dual Technology Humidity/PIR Motion sensor with the goal of replacing both switches.
I can’t seem to ...
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Curious absence of humidity in basement [closed]
Our basement had always felt uncomfortable during high humidity summer days. I finally purchased a dehumidifier and ran it all the time during the dog days of summer for the past two years. It made a ...
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Two vents in utility room, one to AC one directly to attic where hot moist air comes from?
I have a question about my AC system/attic/laundry room.
This is a new house built in 2019. Been living here for a year. I Noticed the laundry room has always been humid and figured it was because of ...
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Must we install a "moisture, not vapor" barrier, room-side, on an insulated above-grade portion of an exterior basement wall [closed]
Must we install a "moisture, not vapor" barrier, room-side, on an insulated above-grade portion of an exterior basement wall
Can we forgo installing any " moisture, not vapor, " ...
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Tricklevent on narrow uPVC windows?
I have some condensation issues inside a few bedrooms in my house, and I want to install trickle vents on the existing uPVC windows. They are old (20+ years), and I am hoping to get a few more years ...
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Humidity levels in new basement are high
I'm currently living in a new build in Ottawa Ontario for which I took possession in February 2020 ( I've been here for about 5 months ). The humidity levels in my basement have gone gangbusters in ...
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Why is the bathroom ventilator constantly running?
Recently due to an outdoor smell which is making me ill I've had to close all my windows in my small 1 bedroom flat.
I now notice the bathroom ventilator is constantly running whereas before it used ...
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Is a peltier-based dehumidifier a good choice to prevent condensation?
I have a non-heated, enclosed space (crawl space that does have a vapor barrier). During a limited number of days in the spring or fall, I get condensation on things that stay cold while the air ...
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Basement in a mud-brick house near a lake?
For the purpose of the short story that I am writing I have come with an idea of a mud-brick small building (base floor + top floor, just a few rooms), lost somewhere in the north Nigeria. The ...
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Hold or hot humidifier for best effect
I'm creating my own humidifier, but I'm not really sure if I should create a room temperature humidifier or a hot/cold humidifier.
If I go for the cold/hot option, I'll be using a peltier element, so ...
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Humidity sensor switch wired to current setup
I have a DewStop FS-300-W1 humidity sensor that replaces a light switch that has a red, black, white and green wires. I want to replace the left most switch (that currently controls the fan) with the ...
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Fixing wall with constant moisture over the years
I live in Mexico where most of the houses are made by brick and cement. Over the years we have had moisture in the walls as shown in the images below.
As you can see, it looks like if the wall is ...
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How to wire garage exhaust fan to humidity sensor/fan control and ventilation controller
I'm installing this exhaust fan in my garage. I also want to install this garage ventilation controller, which is triggered when doors open and by temperature.
I also want to install a humidistat/...
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Had a slow leak into bathroom ceiling/wall but humidity was low and controlled in that area for 2 weeks. What is mold Risk?
Installed a new furnace humidifier to replace a non-working(probably never used) vintage humidifier 14 days ago in a new place I bought.
Confirmed a small gap let a slow drip from condensation that ...
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How to fix a rupturing wall bathroom tile?
There are bathroom tiles on the wall (natural stone), the bathroom tends to get pretty humid (pre-code/no ventilation, do our best to keep it low). We are seeing that a few of the bathroom tiles are ...
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How do I get rid of mold on roughcast?
I've got mold on my living room's wall under my window :
This part of the wall used to be behind some furniture, so I believe the mold was caused by lack of ventilation (we are on the 2nd floor and ...
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High humidity in bedroom and condensation
I have a Bungalow build 1950s cavity walls not sure if they have insulation in the cavity.
Suffering from really high humidity in main bedroom 74% overnight dropping to 59/60 in day. Window and ...
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Is this gap at the base of my wall allowing water to enter?
My apartment is at the ground floor of a 4-floor building. Between the walls of the building and the ground, there is empty space:
It is sufficiently wide to insert a palm, and from the outside, it ...
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What could be the sources of humidity that build up in a house in an arid environment? Outside RH: 10%; Inside RH: 40% +
We open our window at night at the temps get down to 70F @20% RH. The temp in the house drops to 75F and the RH is 33%. We close our windows when we go to work.
When mid day comes, outside, the ...
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Heat pump causing high humidity in house when in heating cycle [closed]
I have a heat pump system that is increasing the humidity in the house when it is in heating mode. So much so that when the heat pump comes on condensation starts to form on the windows.
It only ...
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Two Humid rooms
We built our home two years ago. Had trouble with the air conditioner, but a new company created zones and now the temps in each room are all withing 3 degrees of each other. However, we are fighting ...
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Thermostat settings two hvac units older house
I purchased a historic house built in 1920. The house has two HVAC units, one for the upper floor, one for the lower. Total sq ft 3300.
I had been setting the upstairs thermostat at about 83 degrees ...
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Condo fan coil thermostat fan never turns off, cooling is humid
My thermostat in my condo is a honeywell thermostat and it the only options it has are System and Fan. Fan is set to auto (other option is Lo Med Hi) and the System is set to Cool (or Auto or Off). ...
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Would two 70 pint dehumidifiers work as well as one 140 pint unit?
If so why are dehumidifiers above 70 pt so much more expensive? pros cons? Having two 70 pt in same room vs 1 140 pt?
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humidity vs cooling
Which is more efficient? The house is hot, but closed to keep humidity out. Should we open the doors to let cool air and humidity in or keep closed to keep humidity low, but temperature rises?
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Clothes dryer causing humidity problems in garage - would extraction fan help?
We have a double garage with a high ceiling which is also where our laundry is.
We have a problem with humidity in there due to the clothes dryer being in there which is used very regularly.
This is ...
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Humidity in a shower with a microcement floor
I made a decision that is giving me several problems: I decided to put a microcement floor in my house.
One of the dirtiest problems is in the shower. The micro-cement around the drain gets wet when ...
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dehumidifier setting and humidity setting(April air unit) What is appropriate?
I can't find the right setting for the upstairs vs. the basement for the humidifier on my furnace. I have the dehumidifier in basement on 50%.
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Why does humidity change suddenly when my fridge's compressor turns on/off? [closed]
I'm building a curing chamber in an old fridge, and I've started by capturing some data on the fridge's performance:
I'm really unclear on what's happening when the compressor changes state. When the ...
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Does A/C encourage mold growth
I think i'm being sold bunk by a mold company, but not sure.
We live in the tropics, we recently had our bathroom ceiling flood due to a burst pipe, and went away immediately after. (the landlord had ...
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Risk of insulation triggering mold growth?
The unfinished basement gets water which is pumped out with a sump pump. (Water from heavy rains percolates into the basement.)
Company A gave me an estimate to insulate the attic. So did Company B, ...
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How do you increase humidity with HRV system?
I’m wondering how to increase the humidity in my home. I have a venmar constructo HRV system and have looked at the manual and many videos and can’t find the answer. I’d like my humidity to be 35% for ...
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Reduce high humidity in attic
My attic has high humidity. I put a combo temp-humidity monitor and it was in the high 70s. It’s 30 degrees outside. I’ve read about what could cause the high humidity and two key things came up:
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To reduce damp: heat or dehumidifier?
We have one room of a house which isn't much used, so we don't turn on the heating in it, or wouldn't except that it gets damp, so mold is a concern.
For reducing damp, is it more efficient to turn ...
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How to deal with bedroom condensation/moisture on winter mornings?
In late September when the weather started cooling down here in Surrey BC Canada, we started to see morning condensation on our windows (newly installed last year):
My wife and I and our son sleep in ...
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Why is my air conditioner running when the house is below the set temperature?
We recently had a whole new system installed for HVAC.
We had a lennox furnace with dehumidifier and UV thing, along with the exterior lennox condenser for A/C.
We have the iComfort S30 thermostat, ...
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mitigate mold concerns from humidity in sauna in PNW
I'm building a sauna into a house in the Pacific Northwest. One wall is external, three walls are internal, and there is an attic overtop where I can vent to the outside.
All walls and ceiling of ...
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draining sauna into crawlspace
I'm thinking of setting up a drain from my sauna through the floor of my house into my crawlspace. Practically speaking, would this damage the house?
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