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Old 08-26-2016, 09:38 AM   #1
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Hybrid and Condensation under mattresses

Bought a new 16 XRB last fall and used it twice in cooler/colder weather. Really got a lot of condensation under the mattresses and had to remove mattresses and dry everything in the mornings. No problems during the summer but would like to continue to camp into the fall and winter - does anyone know of any fixes to eliminate or reduce this? Opening the zippers, windows and venting did not help.
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Old 08-26-2016, 11:19 AM   #2
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If opening flaps or windows did not help I can't offer much in terms of new ideas. With our old Kiwi 17a we just left a flap open a little. Almost no condensation. With our X20E that didn't work. By accident I found that leaving the small window above our sink open resolved the issue.

Some folks have found success using PUGs. They look like a hassle to me though. I like the KISS principle.
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Old 08-26-2016, 05:33 PM   #3
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We are having this same issue, even with venting. What I'm trying right now is leaving a container of Damp Rid open in there, when it is not in use.
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Old 08-26-2016, 06:42 PM   #4
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Try this Hypervent Condensation Prevention Matting. We use it under our boat mattress its about 3/4" thick and is placed under the mattress to allow air movement. It works great with our memory foam mattress which seems to hold more heat and caused condensation under the mattress, installed Hypervent and problem gone.
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Old 08-26-2016, 07:12 PM   #5
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We have had a little under our mattress, from time to time, especially before we learned to control the humidity.

I do not worry about it under the mattress. Typically we are out only for two nights, in the cooler part of the season. The board under the matress is waterproof. When we pack up, the matress is pulled up and everything can dry out. I have no concerns about mold or mildew.
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Old 09-08-2016, 12:55 PM   #6
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Found hypervent on sale for $8.58 a foot, ordered enough for both bunks will see how it does next month in the fall camp out.
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Old 09-08-2016, 12:59 PM   #7
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Quote:
Originally Posted by BigGrover View Post
Found hypervent on sale for $8.58 a foot, ordered enough for both bunks will see how it does next month in the fall camp out.
This winter after you had some chance to use it, would you post some feedback for others.

Thanks
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Old 09-08-2016, 03:09 PM   #8
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HYPERVENT IS THE ANSWER!!!!! I tried everything mentioned on this forum, and nothing worked. I ordered enough HyperVent for 1 bunk, as a test, and have had NO problem since. I will be ordering enough for the other 2 bunks soon.

Call 360-657-5503 and talk to Rex. He can answer any question you have, and give you installation tips. Check out HyperVent Marine - Putting An End To Condensation.

If you are still unsure about it, I have enough left over to send you a small sample, if you want. I told Rex if this worked, I'd do free PR for them forever. And I will.
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Old 09-14-2016, 07:02 PM   #9
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I'm going to try putting a wool blanket under the mattress next trip since I already have one. If that doesn't work, then I'll take your advice on the Hypervent. Thanks!!
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Old 09-15-2016, 07:15 AM   #10
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I've been using a outdoor blanket(seems to work so far) As for the hyper vent are you guys permanently mounting it some how or removing each trip?
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