18 votes

I've moved into a new apartment for a while. Is this mold? Is it safe to continue live here?

Looks more like mildew, which is related to mold, but not as dangerous (from a health standpoint). Yes, a dehumidifier could help prevent mildew. I would also look for sources of the moisture, e.g. a ...
JRaef's user avatar
  • 15k
10 votes

"Continuous dehumidifier" randomly fills bucket and stops. Why?

This sounds like a leak at the internal connection from the bucket drip point to the hose adapter. Internally, our Artic King dehumidifier has a small pipe coming out of the dehumidifier over the ...
Triplefault's user avatar
  • 7,644
9 votes
Accepted

When trying to keep moisture in the house down, at what point would it be best to close the doors and windows, is there a calculation?

The calculations are not very straightforward. You want to look for a Hygrometric chart, that shows the relationship between absolute humidity (amount of moisture in the air), relative humidity, and ...
SteveSh's user avatar
  • 6,892
7 votes

"Continuous dehumidifier" randomly fills bucket and stops. Why?

Here's one further possibility: an ice blockage. If the airflow is too weak (dirty filters, externally obstructed, or a failing fan), or the humidity very high at fairly low temperature, ice builds up ...
Chris H's user avatar
  • 6,681
7 votes
Accepted

Fastest way to dry a vented dirt crawl space (no vapor barrier) in California (Bay Area)

Fastest, without tearing the house apart: 4 fans sized to your 4 vents - two blow in, two blow out. Less fans will probably work fast enough, but 4 would fit "fastest" as requested. If you ...
Ecnerwal's user avatar
  • 215k
6 votes
Accepted

Is it possible to recharge a dehumidifier

TLDR: Not just no, but heck no. Throwing good money after very bad First, electricity costs: any dehumidifier old enough to use R-22 is also super inefficient as-built: The government's Energy Star ...
Harper - Reinstate Monica's user avatar
6 votes

I've moved into a new apartment for a while. Is this mold? Is it safe to continue live here?

Yes it is mold. However it doesn't appear to be growing. It looks like the apartment had a water issue and it wasn't dried very quickly. This surface mold can be cleaned up from most things pretty ...
DMoore's user avatar
  • 48.3k
6 votes

I've moved into a new apartment for a while. Is this mold? Is it safe to continue live here?

All of the answers here are great! Taking a noteworthy but slightly different angle on answering it: Is it safe? I agree with everyone given the pictures you showed that it doesn't seem bad, but there ...
noybman's user avatar
  • 2,025
5 votes

I've moved into a new apartment for a while. Is this mold? Is it safe to continue live here?

I'd get a dehumidifier. Areas that don't have good air circulation like closets are more effected. What kind of heating system is your apartment on? Mold needs food (dust works) and moisture. ...
Fresh Codemonger's user avatar
5 votes

Confused about humidity levels in basement - a math problem

Your basement is not nearly as sealed as you think. Which is actually a good thing. You need to constantly have make up air. That is air to replace the air you breathe. Otherwise, while your H2O is ...
manassehkatz-Moving 2 Codidact's user avatar
4 votes
Accepted

What gauge extension cord should I use for dehumidifier in basement?

Specifications shows 115V @ 4.8amp. With that values it is likely he stated to get at least a 16gauge extension cord. I prefer to get at least 14gauge cords as the price is usually very near those ...
spicetraders's user avatar
  • 1,078
4 votes

Should a furnace condensate pump do double duty for basement dehumidifier?

It seems both sources of water are low-flow resulting from condensation (one incidental, one deliberate) so you shouldn't challenge the condensate pump. I'd do it.
Chris Nelson's user avatar
4 votes
Accepted

To reduce damp: heat or dehumidifier?

With "damp", your enemy is humidity, or water which is dissolved in the air. Warm air can disolve a lot more water than cool air. When warm, water-saturated air moves to a cooler place, it cools the ...
Harper - Reinstate Monica's user avatar
4 votes

I've moved into a new apartment for a while. Is this mold? Is it safe to continue live here?

While you're checking out where the moisture's coming from, try a few of the desiccant products available at your home stores to absorb the excess moisture. You'll be amazed at how well they work. The ...
JACK's user avatar
  • 80.6k
4 votes
Accepted

Is a condensing tankless heater that expels excess water outside also a dehumidifier?

The condensate from natural gas burning comes mainly from the burning. Methane is the primary component of gas, and it is chemically CH4. When burned, you have: ... a problem, because MathJax does not ...
aghast's user avatar
  • 1,679
4 votes
Accepted

Venting a dehumidifier into a dryer vent?

Venting a dehumidifier into a dryer vent would be useless. You WANT the "exhaust air" from a dehumidifier - that's the air you just paid to make warm and dry. You only need to get rid of the ...
Ecnerwal's user avatar
  • 215k
4 votes

Fastest way to dry a vented dirt crawl space (no vapor barrier) in California (Bay Area)

For standing/very wet surfaces fans will be the best(besides mopping/sponging/pumping). You want a good breeze blowing in from one end and out the other. Amount of fans will depend on area.
crip659's user avatar
  • 24.5k
3 votes

Garden hose spins but does not unscrew

The knurled portion of the fitting is the part that unscrews. The longer brass-colored portion should be held stationary, perhaps with pliers while loosening, perhaps with another set of pliers, the ...
fred_dot_u's user avatar
  • 10.9k
3 votes

Why doesn't my dehumidifier stay on the humidity setting I select?

You set a Relative Humidity value with a humidifier, not a temperature (as indicated on the control pad). The reason for your confusion may be that when you set some humidifiers, the set point is ...
isherwood's user avatar
  • 138k
3 votes
Accepted

Is it safe to turn off dehumidifier by switching power off

Refrigerant cycle dehumidifiers have some sensitivities, and I would recommend operating in accordance with the manufacturers recommendations. I operated several types of conventional and LGR ...
J Walters's user avatar
  • 204
3 votes

Humidity levels in a basement

I keep my dehumidifier at 60% or 65%. That's a good default when you're using the space for storage or are concerned about limiting mold/mildew. If you're not having problems with the humidity, then ...
Shimon Rura's user avatar
  • 8,242
3 votes

What is this, and I can pump my dehumidifier water into it?

Should be fine. All HVAC equipment that make condensate drain into risers just like this, no need for air gap because the source of the water is not connected to the potable water system in the house....
Paul Logan's user avatar
  • 6,930
3 votes
Accepted

How can I keep my computers cool in a 100 degree house?

You need an ultimate-heat-sink OUTSIDE the house Here's what you can't do: Server makes heat in box, A/C moves the heat out of the box and into the tiny-house, tiny house copes with ambient + solar ...
Harper - Reinstate Monica's user avatar
3 votes

Why is my aircon increasing relative humidity?

For an A/C unit to reduce the % of relative humidity in your home a properly sized A/C unit coupled with a dehumidifier must run a long time to decrease that humidity. When the A/C unit is first ...
d.george's user avatar
  • 12.4k
3 votes
Accepted

Humidity in cool basement

The issue with dehumidifiers is they are basically air conditioning units that once they cool the air by passing it over the evaporator coil to collect the moisture they reheat it by passing the air ...
Ed Beal's user avatar
  • 103k
3 votes

"Continuous dehumidifier" randomly fills bucket and stops. Why?

If the dehumidifier uses a pump to actively remove water from the collection bucket, then it could be an issue with the controls system. We had a cheap dehumidifier that had to be set explicitly to &...
alexw's user avatar
  • 505
3 votes

"Continuous dehumidifier" randomly fills bucket and stops. Why?

Having had this many times on various dehs over the years it seemed to be a consequence of the drain hose becoming blocked with some sort of slime that presumably grew in the presence of moisture and ...
Caius Jard's user avatar
  • 1,322
3 votes
Accepted

Do I have a serious moisture problem in the basement? After installing the "dehumidifier", the 2 liter tank was 2x full during less than a day

If the dehumidifier occasionally turns off because it reaches your humidity setting, then it's working and it doesn't matter how much water it is producing. If it never reaches your set point and runs ...
jay613's user avatar
  • 37.9k
3 votes

Do I have a serious moisture problem in the basement? After installing the "dehumidifier", the 2 liter tank was 2x full during less than a day

A 2 liter tank is tiny for a dehumidifier. Every dehumidifier in other than completely casual service I've ever worked with has been set up with a pipe to a drain for the condensate so it can just ...
Ecnerwal's user avatar
  • 215k
3 votes
Accepted

Does the cellar need to be aired regularly even though the dehumidifier is running 24x7?

Dehumidifier does its job, by recycling the air and removing humidity. However it only recycles the air, so it is up to you to let fresh air in. Of course if the humidity outside is much higher, the ...
Traveler's user avatar
  • 17.4k

Only top scored, non community-wiki answers of a minimum length are eligible