The tag has no wiki summary.

learn more… | top users | synonyms

18
votes
1answer
7k views

Humidity Levels

What is a healthy and safe humidity level that I should try to keep my house at?
17
votes
4answers
107k views

What humidity should I set my dehumidifier to?

I just bought a 50 pint dehumidifier for my basement. What humidity level should I aim for? This time of year the outside humidity is very high (over 80%) and we do not have central air. Right now ...
13
votes
3answers
50k views

What are the pros and cons of a whole house humidifier?

In the winter, my house (~2500 sqft) becomes unbearably dry. Last winter, my wife and I used a tiny humidifier for the master bedroom to keep us from completely drying out, but since then I have been ...
11
votes
1answer
208 views

How to make a house that tolerates condensation

Where I live, it's humid outside all fall, winter, and spring, and hovers around 45 deg F. Combined with indoor cooking, showering, etc., we always get a lot condensation on our windows. Rot & ...
10
votes
2answers
9k views

What does a Summer/Winter switch on furnace air ducts do?

On some of our furnace ducts, there is a switch/valve for Summer/Winter or S/W. What does changing this switch/lever accomplish? Can bad things happen if I forget to switch it? Bonus question: ...
9
votes
2answers
3k views

Why is my house humidity at 80%?

I live in Northern CA. For over 2 weeks, outside humidity is 90% (night) to 60% (4pm). I use fans when cooking and bathing. I keep the house temperature at 60-66 deg (night-day) and probably may ...
8
votes
1answer
3k views

How should I drain water from a basement dehumidifier?

Our basement has had difficulty with water in the past, from intrusions through the side (fixed by gutters) and chimneys (fixed by chimney caps). Most recently, however, water has been collecting on ...
7
votes
2answers
1k views

Solutions for a moist basement?

I live close to the water and there is a high water table around my house. Therefore a lot of water vapor passes through the basement walls. I would like to be able to store stuff in my basement and ...
6
votes
2answers
5k views

Why does my fluorescent light fixture take minutes to turn on in high heat and humidity?

Our kitchen fixture won't come on for 3 to 5 minutes when the temperature goes over 90F (32.2C) and 90% humidity. It flickers and only reaches 80% brightness after that. It will occasionally flicker ...
6
votes
2answers
434 views

Would hardwood or carpet be better for a humid place?

We live in northern New Jersey (read: can get really humid). We have wall-to- wall carpet in our bedroom. The humidity caused it to rise like a can of surströmming (rotten herring). I have three ...
5
votes
3answers
339 views

What can soak up moisture from a closed space

I have a really weird problem. I have a bedroom wall where the paint kept bubbling and peeling off. I have re-textured and painted it several times. I finally ripped all the drywall off and ...
5
votes
4answers
1k views

Will running a dehumidifier near new concrete cause it to cure poorly?

I have a new house with high humidity in the basement. Will running a dehumidifier constantly cause the new concrete to cure poorly?
5
votes
4answers
2k views

Can I run a dehumidifier pump to a washer stand pipe?

I have a very humid basement, in which I run a dehumidifier often. To allow for a more constant run, I purchased a dehumidifier pump. It says to run the pump out through a window or to a sink. I ...
5
votes
1answer
1k views

Is there an alternative to a self-piercing saddle valve for a humidifier?

I bought and installed a whole home humidifier. The humidifier is located in my attic connected to the air exchanger. The Self-Piercing Saddle Valve is located there as well to draw water to the ...
5
votes
2answers
2k views

Does a humidifier cool the air?

I'm considering getting an evaporative humidifier for my super-dry Northeast house, but I'm wondering if the evaporation cools off the room and is going to add to my heating bill. It seems like ...
5
votes
2answers
2k views

Is there a low cost way of reducing humidity?

I'm currently living in a very humid room and so am looking for a cheap way of getting rid of some of that humidity, without having to purchase an expensive dehumidifier. Are there any plants, ...
4
votes
2answers
7k views

How should I test my home's humidity?

We have recently replaced the windows in our home and insulated the basement, making the house much more airtight. This combined with the fact that our dryer currently vents into the basement, we ...
4
votes
1answer
185 views

How to better waterproof the shower area?

I recently started having a lot of moisture in room next to my bathroom/shower wall. Its important to add that these walls are made of plaster. Initially I thought it was the silicone than joins the ...
4
votes
1answer
490 views

How do I lower the humidity in my non-vented laundry room?

I've lived in my house for about a year now and I have this small room (maybe 5x6) that contains my washer and dryer. I have central air and this room does not have a vent. Also this room does not ...
3
votes
2answers
2k views

Why does my window air conditioner cool but not dehumidify?

I have a brand-new 5000 BTU Frigidaire window air conditioner, and it seems to work fine except that it doesn't reduce the humidity in the room. I turned it on last night, and the temperature was 81 ...
3
votes
1answer
340 views

How can I eliminate moisture dripping from my ceilings?

I have a 30 yr old bungalow. Last year we replaced every door and window in our house to make it more energy efficient. Our main heating source is an air-tight wood fireplace which runs all day ...
3
votes
1answer
350 views

What is a good way to humidify a (temporarily) vacant desert home?

We are snowbirds spending winters in our home in Phoenix. When we close it up for the summer we place several 5 gallon pails of water around to keep the humidity at about 35%. Is there a reason why ...
3
votes
3answers
9k views

How do I fix laminate flooring that's begun to rise in the middle?

We have laminate flooring in our kitchen/lounge and over the winter (which are cold and damp here in New Zealand) the flooring has begun to rise up in a couple of places. It was fitted by the previous ...
3
votes
2answers
529 views

how critical are temperature and humidity when installing laminate floors?

We have a few dozen boxes of laminate flooring purchased a few weeks ago (Harmonics with Uniclic, if anyone's interested). These have been stored in an unfinished basement in central Minnesota, and ...
3
votes
0answers
365 views

small black flying insect/bug in the house all of a sudden [closed]

it has been raining like crazy recently in my area (Maryland) for the last month and a half. I noticed that i'm seeing a lot of small flying insects (the kind that is seen on a extremely ripe banana) ...
2
votes
2answers
530 views

Installing subfloor and hardwood on top of concrete (2nd story)

I bought a condo in a triplex where I basically have all of the 2nd floor. Most rooms are on hardwood, while the rest is on laminate with a serious height difference of an inch and a half (hardwood ...
2
votes
1answer
423 views

Any tips for painting in high humidity?

There is a 2 inch square where the paint ripped off above the shower. Drywall underneath looks fine, so my plan is to scrape, prime, paint (just a patch job). It's the only shower in that house and ...
2
votes
2answers
770 views

Can I store unused hardwood floor and base trim in a shed (or garage)?

I have installed engineered hardwood all throughout my house, in addition wood base trim (which comes pre-primed). Now that my projects are done, I dont want to throw away the wood, incase I can use ...
2
votes
2answers
123 views

Is a combined AC/Dehumidifer unit more efficient than separate units?

I've just moved into a "basement-ish" apartment; the actual ground level is about at my waist. It's a bit mustier than I'd hoped, and not as cool as I'd like during these closing days of Summer. I'm ...
2
votes
1answer
229 views

How do I convert an A/C window unit from thermostat to humidistat control?

I've managed to get my hands on a really nice window unit AC that can cool my entire living space (about 900 sq ft), but the downside of it being so powerful is that I either have to leave it ...
2
votes
2answers
107 views

Why is my kitchen so humid?

My kitchen is an extension of the house. Most of its walls are outside walls. It's extremely cold in winter (down to 7 degrees celcius). Its unique window seems old too. The problem is it's very ...
2
votes
0answers
476 views

What are good Relative Humidity and Temperature settings on an MHRV and are the settings related?

I need to configure the threshold Relative Humidity and Temperature settings on an whole house MHRV system. The way the system works is that if the RH threshold is exceeded the system increases the ...
1
vote
4answers
895 views

How often would a chest freezer need to be defrosted in a very humid tropical area?

Approximately how often would a chest freezer need to be defrosted if I live in an area that has a very high relative humidity and dew point. Relative Humidity: 73% Dew Point: 70 degrees I read on ...
1
vote
3answers
145 views

What makes water condense on the interior of the windows at night when it's cold? [duplicate]

While staying with some relatives, I noticed that all their windows experience terrible interior condensation at night and am wondering about what they can do to prevent it. The house is kept to 70 ...
1
vote
2answers
826 views

How fast does moisture seep out of the ground in a crawlspace?

I need to fix humidity in my crawlspace. I'm aware of the expensive option, i.e. conditioned and sealed crawlspace, but I hope that's a last resort. I'm wondering if I can get away with the ...
1
vote
2answers
59 views

How should clothes and books be stored in an unconditioned space?

We are having our first child, and to prepare for that we have to move a lot of stuff to storage. The storage we have is not heated or otherwise temperature/humidity regulated. This means that ...
1
vote
1answer
1k views

What should I have my dehumidifier set at to dry out my basement?

I have a 1600 sq ft home. The wellmate sprung a leak last Sat and soaked the basement. Im running fans down there and just got a 40 pint dehumidifier per the service guy. What setting should I set it. ...
1
vote
2answers
183 views

Why do air conditioners have thermostats, not humidistats?

I've noticed it over the years in various living quarters: an inside A/C temperature setting that's appropriate and comfortable for a given outside temperature is quite unbearable when the outside ...
1
vote
1answer
579 views

How to diagnose a broken Aprilaire humidifier (Model 600)?

I have an Aprilaire Humidifier Model 600 (or maybe 600M) mounted on my furnace. The humidifier is not turning on (i.e. letting water flow over the filter) when the furnace is on. The below images ...
1
vote
1answer
175 views

Should I tie into the ERV or just vent outside to increase bathroom ventilation?

Our bathroom currently only has an intake connected to the Energy recovery ventilation (ERV) to remove humidity, and it's completely inadequate even for a quick shower. Should I install an exhaust fan ...
1
vote
1answer
841 views

Can I replace an air exchanger with a heat pump?

In my basement I have a rather large Air Exchanger: I have heard that if I install a heat pump I may be able to replace the air exchange. This gives me two benefits that I can see: The Heat Pump ...
0
votes
3answers
41 views

Can forced central air be retrofitted with central humdifier?

Several homes I'm considering have central air conditioners, but radiators or baseboard heaters. Is it possible to use the A/C ductwork to provide humidity to the home? I assume most central ...
0
votes
2answers
50 views

How to project basement level of humidity before building?

Assume I am considering buying a lot and building a house in it. Is it possible and how would I project what the humidity level will be in its basement? Say the basement is built using concrete ...
0
votes
0answers
16 views

What's the quickest way to get rid of larvaes and [clothing] moths at home?

We've moved to this apartment two months ago. The apartment was apparently repainted, and was being let for a higher price because "it was cleaner compared to the other one". The building is no older ...
0
votes
0answers
38 views

How do I raise the humidity levels in my home?

I installed hardwood flooring in my home late last fall. The humidity level in my home this winter dropped incredibly low (20%). I'm not sure if it's related to the new hardwood. I installed a whole ...
0
votes
0answers
19 views

Condensation on windows [duplicate]

Having lots of moisture on windows in mornings a few days after turning furnace on now that it's getting colder out this fall. But now one if the windows won't even open! What do I do? Thanks!
0
votes
1answer
329 views

How do I use a vaporizer/humidifier? [closed]

An attic has been converted into a bedroom and it's very uncomfortable to sleep in, the air is very dry. I bought a humidifier but it didn't come with instructions. This may be a silly question but I ...
-1
votes
1answer
269 views

Can I use computer cooling fins to build a dehumidifier? [closed]

I am trying with humidity sensors and want to build a simple humidity circuit myself, I already got a USB humidifier dissembled, now I need a dehumidifier. Can I make a small DIY dehumidifier with ...
-3
votes
1answer
99 views

I have a very humid room in the house, should I isolate it?

My house has a room very humid (85%) and susceptible to temperature changes. Even opening the windows I have mold issues sometimes. The other part of the house is well isolated and acceptable ...