Questions tagged [dehumidifier]

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Why isn't my new dehumidifier running?

I bought a dehumidifier today. It's an Izzy Avra IZ-9050 which they use here a lot maybe from Greece or Italy not sure. I can't find any information on this item only places to buy it and online ...
Izzy's user avatar
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1 vote
0 answers
100 views

HVAC cooling latent capacity versus pints per hour

I'm using this calculator to attempt to size a new heat pump HVAC system ... https://hvac.betterbuiltnw.com/ It gives required capacity as three numbers (in btu/hr): heating, cooling, latent. I ...
RustyShackleford's user avatar
1 vote
0 answers
102 views

Can I use a portable dehumidifier as a temporary solution for the humidity in my crawlspace?

I have a Frigidaire 70 Pint Capacity Dehumidifier that I'm considering putting down in my crawl space as a temporary solution. Back story: Our house is only a 1.5 years old but the crawl space is very ...
Andrew's user avatar
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2 votes
1 answer
505 views

Whole house dehumidifier with no central air?

I moved into my home in the winter of last year after the house had been vacant for 1 - 2 years. In the summer during bouts of rain for 2 - 3 days, humidity levels in the house increase dramatically. ...
geoscience123's user avatar
0 votes
2 answers
138 views

Completely Draining Dehumidifier?

Yesterday, I bought a GE dehumidifier from Home Depot. I need to return it for a long dumb reason. But when I move it around, it keeps sloshing around and I don't want this thing to leak all over ...
Andrew202's user avatar
1 vote
4 answers
550 views

Installing Dehumidifier Drain into House Drain

I am looking to reduce the amount of times I need to dump the dehumidifier bucket. The unit has an integrated pump so I was looking to install it permanently into the house in some manner. The house ...
Kevin L's user avatar
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2 answers
139 views

Sizing charts for air conditioner or heat pump for humidity rather than cooling? 1-stage vs. 2-stage? 3-stage? [closed]

Inevitably I'll have to replace my heat pump, and when that time comes I'd like to have the calculations on the size of the replacement to account for dehumidifying in addition to heating and cooling. ...
MacGuffin's user avatar
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1 answer
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Will dehumidifier damage old painted plaster?

I found a window leak during the rain, which ended up wetting a plaster wall near the window. During the rain, a 2 in by 6 in spot of paint lightly bubbled, the bubbles went away shortly after. Now, a ...
Ruslan Osipov's user avatar
4 votes
2 answers
263 views

VOC increase when were lowering humidity!

UK house owner here. One of our ground floor rooms has a damp issue from below, due to poor damp proofing. We can't fix the problem immediately until we have finance. Apart from a musty smell and ...
Foxtonian's user avatar
0 votes
1 answer
56 views

Is there a category of ducted HVAC/IAQ parts but sized for what is typical for ductless systems? [closed]

There's old houses with extensive remodels that are in need of some kind of "zoned" help in interior air quality (or "IAQ", I'm not sure how common this acronym is just yet), ...
MacGuffin's user avatar
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What would cause drywall moisture to raise during the day and drop at night?

There is a portion of drywall to the side of a window in my bedroom (4' W x 5' H) that was saturated with moisture (my pinless moisture meter calibrated for drywall would read 100%). Not sure when the ...
Ruslan Osipov's user avatar
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1 answer
423 views

Draining Dehumidifier through window

We are getting a dehumidifier for our basement and attaching it to a condensate pump. We would like to drain it out the window, but we want to know how to do that without having the window needing to ...
Mel's user avatar
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2 answers
391 views

What dehumidifier should I get for a small bathroom that doesn’t have a great way to evacuate humidity after showers? [closed]

Small bathroom Has a small left to right sliding window which we open and also have a fan in to try and blow out the humidity We currently have a small dehumidifier that does a cup/day in there as ...
Robert Elia's user avatar
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0 answers
43 views

How can I troubleshoot a dehumidifier evaporator which frosts up quickly?

This dehumidifier is about two years old. The evaporator is icing up almost immediately after turning it on. This picture is about 20 seconds after turning it on. After about an hour the bottom ...
jay613's user avatar
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1 vote
2 answers
777 views

Will exhaust fans effectively remove moisture from my crawl space? [duplicate]

This is a highly debated / discussed topic, but pretty much all of it based on parts of the country with relatively very high humidity. I live in San Diego, where humidity is moderate most of the year ...
SAS2Python's user avatar
0 votes
1 answer
138 views

Scum in dehumidifier bucket

I have a dehumidifier in the basement that runs pretty much constantly, and I go down there every day or so to empty the bucket. After a while, scum starts to form on the interior of the bucket. I ...
John Gordon's user avatar
7 votes
4 answers
5k views

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

I read so many contradicting things online: Some recommend dehumidiers (if so, which?), some advice against. Some recommend fans (which, how many, how/where to install?), some advice against. Some ...
divB's user avatar
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4 votes
4 answers
1k views

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?

I'm trying to keep the moisture content fairly low in my house. I have a humidity sensor in the house. Right now it is showing a temperature of 17C and a humidity (RH) of 62%. I also have a humidity ...
atreeon's user avatar
  • 153
1 vote
2 answers
803 views

Comfee dehumidifier creating a weird toxic smell

Recently bought a new Comfee Dehumidifier MDDF-16DEN7 WF and turned it on in a relatively small bedroom. Even though it dropped the humidity from average of 90 to 60, it left a weird smell in the air ...
Tiago Martins Peres's user avatar
1 vote
3 answers
701 views

Venting a dehumidifier into a dryer vent?

I just moved into a highrise with no washer/dryer. Instead of getting a massive washer/dryer combo, I'm planning on getting a 0.9cu washer and a heated drying rack to prevent wear on clothes and also ...
crowkeep's user avatar
0 votes
1 answer
362 views

Can I connect a dehumidifier pump to the AC condensate access point in my attic?

I recently bought a dehumidifier with built in pump for my attic. There is an HVAC unit in the attic with a condensate drain pan and drainage pipe. There is (what I think is) an open access point in ...
Aaron's user avatar
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0 votes
2 answers
55 views

At the basement window relatively much water penetrates in rainy weather. The easiest way to fix this?

I have long wondered why my dehumidifier filters so much water in the air. I have a small window and when it rains a lot of water gets in. I have seen this only now, because before a rack was there. ...
Sybil's user avatar
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1 vote
1 answer
1k views

New dehumidifier making rhythmic pulsing noise. How to fix?

I have a brand new dehumidifier that is making a rhythmic pulsing sound. I believe it is the compressor because it runs with just the fan for air testing and I do not hear it then. It becomes apparent ...
bradforj287's user avatar
0 votes
1 answer
90 views

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

I recently got a dehumidifier which collects an amazing amount of water. Because of the damp cellar, I had previously aired twice a week. Do I need to continue to air it even though the dehumidifier ...
Sybil's user avatar
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0 votes
4 answers
310 views

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

I have noticed that it is humid in my basement. I ventilate regularly but it is still damp. I bought a dehumidifier and put it into operation. After less than 24 hours, the 2 liter tank was already 2 ...
Sybil's user avatar
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0 answers
295 views

Dehumidifier is draining through a hose and through a second opening into the bucket

We bought a GE 35 pint Dehumidifier in June 2022, and attached a clear hose 3 days ago. The hose connection is dry and tight and water does flow through the tube but it also drains into the bucket ...
Jane's user avatar
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0 votes
0 answers
105 views

New York: Hole in basement floor?

Disclaimer: This may be a FAQ once I find the right terminology. Apologies for any time-wastage. In the basement of a single-family dwelling in NY state, I have this hole in the floor below the main ...
NJL's user avatar
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1 vote
1 answer
44 views

What size a/c should be used with whole-house dehumidifier?

I have a whole-house dehumidifier (WHD) to control R/H in the basement as well as on the main level of my house (with separate controls). Does that mean a smaller or larger A/C would be more efficient?...
Russ Lyons's user avatar
1 vote
2 answers
139 views

How do I lower the humidity in my brick/concrete basement?

I have some expensive antique furniture stored in my cellar. The cellar came with an air con in it (believe it or not). We added a fan that will blow air OUTSIDE, and a dehumidifier. This is to make ...
Merc's user avatar
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0 votes
1 answer
87 views

Is it ok that my furnace uses the air conditioner for dehumidification?

I have a Carrier 59mn7 furnace with an Infinity Thermo. The a/c condenser is a Ruud. The system does not have a dehumidifier installed--it is using the a/c during the dehumidifying function. Is this ...
Rcpell's user avatar
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0 votes
0 answers
100 views

Dehumidifier (Whirlpool SS226) doesn't even turn on now

Hope someone can help me so I know whether to bother trying to fix it. I have a Whirlpool SS226 dehumidifier. I used it quite often last year. I just dug it out last week to use again. When I turned ...
H Chan's user avatar
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1 vote
1 answer
53 views

Dehumidifier switch gives line voltage without load but <1V with load

I'm trying to troubleshoot and understand an issue with my dehumidifier. Its fan still runs but the compressor wouldn't turn on. I measure <1V between "Compressor" and "Neutral" ...
Roc W.'s user avatar
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2 votes
1 answer
88 views

Dehumidifier Placement for Best Moisture Reduction: Source vs Symptom Area

Concerning the most effective moisture reduction, is it better to place a dehumidifier directly next to the source of the moisture (kitchen stove, shower) or directly next to the symptom area where it ...
TryDIY's user avatar
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17 votes
6 answers
27k views

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

Several "continuous" dehumidifiers all had the same problem. There is a bucket to collect water, and also an outlet for a hose where the water can flow out so water does not collect in the ...
jay613's user avatar
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1 vote
0 answers
129 views

Basement humidity 80-90% with unsealed concrete foundation, how can wood moisture be OK?

In summer our home in west Massachusetts has a humidity level of 80--90% for months, which according to what I read can be a serious problem. However, my pinless moisture meter measures the wood beams ...
P. B.'s user avatar
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2 votes
1 answer
1k views

Can I use a portable air conditioner/dehumidifier as a dehumidifier in the winter at cold temperatures?

My portable air conditioner can also be used as a dehumidifier. I can use it in the summer/spring both as air conditioner as well as dehumidifier, and it works really well as a dehumidifier under hot ...
Franz's user avatar
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3 votes
2 answers
1k views

Is the float switch broken?

Does everything look alright or is there something wrong with the float switch? Thanks! Friedrich model D35B1A. The "bucket full" light refuses to turn off. I think the float switch is in ...
Emilia's user avatar
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1 vote
2 answers
314 views

Dehumidifier and spray water effect on curing concrete basement patch

Internal trench waterproof system just installed in basement that includes some new concrete in July. Will a dehumidifier hinder optimal curing of the concrete and for how long? Also should I spray ...
ED VAN's user avatar
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0 votes
0 answers
43 views

Should I be installing a dehumidifier inlet with the air supply or just in the crawlspace?

Built our home five years ago and our crawlspace is 2300 sq ft. For awhile ran a residential dehumidifier till it went out. I do understand that placing this in the crawlspace wasnt the best ideal ...
DᴀʀᴛʜVᴀᴅᴇʀ's user avatar
1 vote
2 answers
293 views

Why doesn't my condensate pump drain very well?

I'm working on a crawl space encapsulation. One of the last steps for me to do is to setup a dehumidifier. I bought a Santa Fe Compact 70 and a condensate pump to go with it. I'm discharging it about ...
Eric's user avatar
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1 vote
1 answer
96 views

Dehumidification settings cannot reach level

I just moved into a new home and I live in hot, humid, Louisiana. We have two AC units, one upstairs and one downstairs. The unit upstairs has a dehumidifier but the one downstairs does not. I have ...
Jav Solo's user avatar
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0 votes
1 answer
168 views

How to vent a 1/4" drain tube?

I have a dehumidifier which is hooked to a 1/4" drain tube. The drain tube is not functioning because I think there is some kind of vacuum or pressure differential thing happening. I know that ...
Tyler Durden's user avatar
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2 votes
1 answer
1k views

Humidity in cool basement

My basement is about 61 degrees (Fahrenheit). I have a dehumidifier and i think it is working fine in that it is removing water from the air. When I first got it the humidity was about 70 % and the ...
John Doe's user avatar
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0 votes
1 answer
292 views

Confused about humidity levels in basement - a math problem

I can't work out the math on this one. I have a basement. The size is about 10,000 cubic feet (about 35 by 32 by 9). I bought a dehumidifier that says the humidity is 70 %. I want to get this below ...
John Doe's user avatar
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0 votes
1 answer
157 views

How big of a transfer grille do I need between two 500 sqft rooms if I want to balance humidity

So I have two basement rooms about 500 sqft each and I want to balance the humidity between both rooms. One room has a dehumidifier and drain so I'd like to cut a transfer grille between the two ...
MonkeyBonkey's user avatar
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1 vote
3 answers
603 views

Should the foundation wall be insulated when encapsulating a crawl space, or not?

I've seen conflicting info on this. Some sources say that you shouldn't insulate your foundation wall because moisture can get trapped between the insulation and the wall. Others say that the ...
brentonstrine's user avatar
4 votes
1 answer
660 views

Why can't an encapsulated and dehumidified crawl space have vents sealed off?

I found SECTION R408.3 of the International Residential Code which says that unvented crawl spaces are only allowed if one of the following is true: There is exhaust ventilation fan running ...
brentonstrine's user avatar
0 votes
0 answers
142 views

HVAC auxiliary fan relay wiring help

I set up a two zone whole house dehumidifier system with 24v no/nc dampers, primary and secondary zones. the primary zone is controlled by a Aprilaire model 76 external control and the secondary zone ...
Walt Okichich's user avatar
0 votes
0 answers
666 views

Dehumidifier shuts off after a few seconds

Steps to reproduce: Plug in dehumidifier. The green LED goes on. Press the power button on the control panel (lower free hanging PCB in picture). The fan starts running. The compressor doesn’t turn ...
feklee's user avatar
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0 votes
2 answers
631 views

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

I understand that a condensing tankless water heater will recycle that extra heat and only vent the heat that it cannot use; this is why they have a greater efficiency. But the water that condenses ...
Misha AM's user avatar