Happyme_small
Reputation: 1166
Moderator

Do dehumidifiers work?

I feel like my current apartment is more humid than any apartment I've ever lived in before. It also gets pretty stuffy unless we leave the windows cracked open while we're at work during the day, which will be harder to do as it gets colder outside. Do dehumidifiers work?

5 Answers

  • 2008_0522stuff0016_small
    Reputation: 2052

    Oh yes. Very much so. We keep one in the basement to dry it out and it works beautifully.

    I do recommend, if you can, placing it somewhere where it can drain continuously so that you don't have to remember to empty it every day. However, if you can't, the water is good for houseplants.

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  • Img_1479_1_small
    Reputation: 13

    I agree with the other folks who answered. We have one for our basement but it is loud, it makes the area quite warm, and in the rainy season we've got to check it daily and empty it.

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  • Img_3324_2_small
    Reputation: 1962

    It's worth paying $26/year (or $6 for one month) for a subscription to get past the paywall at ConsumerReports.org. They have an extensive buying guide and comparison of dehumidifiers. In particular, the electricity consumption of some models is much higher than others, and you have to select one that is large enough to handle the job.

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  • Sacri_ordines_by_charism_small
    Reputation: 3723

    Yes, they work. Noisy buggers, expensive too, and they pull lotsa amps (read: jack up the electric bill) like nobody's business, but they work.

    But...

    ultimately, you need to admit that the moisture is coming from somewhere - if you're in a ground floor unit, the foundation may be cracked...
    or it might be something as simple as moving the gutter drains away from the house (gutter drains that empty two feet from the foundation can cause humid apartments, and in freezing winter can even cause foundation cracks!).

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  • Doorbells_002_small
    Reputation: 896

    Yes, however, dehumidifiers give off heat. More than you might think. (Just remember how a puddle dries up in the sun...it absorbs the energy from the sunshine to change the state of the water from liquid to gas. A dehumidifier tries to do just the opposite... changing from a vapor to a liquid and RELEASES HEAT.)

    I agree, you must plan for how you will dispose of the water collected. Most units come with an option to either catch it inside in a bucket or container...which you must then dump when it gets full (or else a float switch turns off the unit so it doesn't overflow)...OR...
    you can do a permanent conversion so that the water drains out a drain hole or hose and down a nearby drain by gravity.

    Helpful tip. Buy the largest size you can aford.
    That is, if you are trying to treat a large room, calculate the cubic feet of space, and buy something slightly larger than you need. ex: 1000 cu. feet needed. Don't buy a unit rated for 900... go for the 1200 even though it's more expensive.

    You may also find you don't need to run it constantly, or that you can set it to a lower setting after the initial "dry out". Of course, opening all your windows on a warm, humid day can undo everything you've just fought to achieve, so monitor when on how much fresh air you allow in.

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