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Old 08-09-2010, 06:02 AM
 
Location: NJ
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Default Basement dehumidifier setting?

I have a dehumidifier in my basement that I have been keeping at about 75% relative humidity. It seems to be enough to prevent mildew and musty odors. Is this a good setting or should I adjust it lower? What setting do other people use?
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Old 08-09-2010, 07:27 AM
 
Location: N of citrus, S of decent corn
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We keep ours at 100%, figuring that we want it to pull as much moisture out as possible.
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Old 08-09-2010, 06:40 PM
 
Location: Greenville County, SC
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Mine is set to keep relative humidity at or below 50%.
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Old 08-09-2010, 07:46 PM
 
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I've always heard to keep it at or under 55 relative humidity to avoid mold and moisture problems. I would think 75 would be a wee bit damp... but every home is different....

And I could be wrong

We have one in our finished basement (split level house - half below and half above grade) and I keep it at 50% RH. It really only runs in the heat of the summer. When it's beautiful and dry out (anywhere up to about 75 with low humidity) the windows are open anyway.
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Old 08-14-2010, 02:42 PM
 
Location: Ocean County, NJ
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Mine is at 50. Any higher and it just feels too humid. During the Winter I unplug it since it's useless to have it running then. Mine drains into my sump pump. The grass outside loves it.
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Old 08-14-2010, 03:07 PM
 
Location: Central New Jersey
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I keep mine at 35-50 dependent on how much rain we get.
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Old 08-14-2010, 06:06 PM
 
Location: Sugar Grove, IL
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we keep ours at around 55% If you have it set to keep the room at 75% humidity, that is too high. You definitely want it to be less than 60..so anywhere between 50 and 55 is good.
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Old 08-15-2010, 06:54 PM
 
27,211 posts, read 20,216,772 times
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Set it to <55%. It might be worth investing in a hygrometer for building materials so you can see if you're building materials are above the recommended moisture levels. Moisture is the best way to deteriorate building materials and structures.
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Old 08-15-2010, 08:10 PM
 
Location: Columbus, Ohio
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I keep mine at 50%, seems to make it real comfy.
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