I have read thru several of the 'condensation' threads, and like with many things, there seems to be some disagreement as to whether absorption/desiccant type "dehumidifiers" work.I do know about cracking a window and/or vent, and using fans to circulate air. But I do not want to use anything requiring even more power usage, so I am considering purchasing one, or more, of the following:http://www.amazon.ca/Ivation-Renewable-Rechargeable-Wireless-Dehumidifier/dp/B00KO3E9A0/ref=sr_1_14?ie=UTF8&qid=1418760046&sr=8-14&keywords=eva+dryhttp://www.amazon.ca/gp/product/B000H0XFD2/ref=pd_luc_sim_01_04_t_lh?ie=UTF8&psc=1http://www.homedepot.ca/product/damprid-moisture-absorber-tub-298ml/981449 Any real world experience you can share regarding these (or similar) products would be greatly appreciated. Thanks!

I have used DampRid in my home closet. It absorbs water like crazy. One time I forgot to check on it and its absorbed water had overflowed the container and made a mess. So recommend only for folks willing to pay attention to it.

In reality NO they remove such a small amount IMHO they are ineffective. I use a small portable electric dehumidifier which can draw two gallons of moisture from the air in a 12 hour period. We put the unit in our shower and set it for whatever we like. We actually dry all our towels and wet cloth's in the process. No humidity in our hybrid. Problem solved. Best of luck

Actually I think they work really well depending on what you want them for. As a dehumidifier while you living in the rig probably not too effective. As an aid while being stored, I have had great success with a couple items.Still use a DAVIS air dryer and a coupleDri-Z-Air. No mildew, moisture, or musty conditions when used.

YEs they work, HOWEVER all 3 of those are very limited, they are designed for things like closets or chests that are not often opened.. For a "Room" you would need way more than they can provide,, better to use a electric De-humidifier,

There are small electric dehimidifiers on the market. We used two last winter. Had to empty them every day or two. Worked OK. But I prefer my big one running 24/7 the trailer is nice and dry when ever we want to go.

Humidity / Moisture Absorbers; Do They Work? | Good Sam Community

42 Replies

atreis
Explorer
Jan 01, 2015
I use the 2nd one on the OPs list (Eva-Dry EDV500) and it works quite well. I use four in my small trailer and bring two into the house every couple weeks to plug in and renew. If I don't do that I've found they last about 5 weeks before they need to be plugged in.
jrnymn7
Explorer
Jan 01, 2015
There are also several small 120v peltier electric units available. In my experience, they are ineffective.
Charlie_D_
Explorer
Jan 01, 2015
RVcrazy wrote:
Recommendations for small electric dehumidifier?

Just about any kind because they are all made in China. The 120V have a compressor that condenses the moisture. They usually have a tub with float that shuts things down when full. I have a Kenmore from Sears and it has an adjustable moisture control. Also has a tube that can be hooked up for a continuous drain. I drain into the kitchen sink with the tank valve open.
wannavolunteerF
Explorer
Dec 31, 2014
I use the damp rid buckets like OP posted link to. I buy at one of the discount stores like Dollar General, Freds Dollar or similar.. I either sit mine on lavatory in bathroom or in bathroom trashcan. Now my TT is parked at the house, so it is easy to monitor. No smell and I feel like it is keeping moisture under control. No musty smells from staying shut up for weeks on end. FYI, my mom has used DampRid in the closets of her 1940's plaster-walled home for as long as I can remember to control moisture, mold and musty smell. I figure if it worked for those closets (especially the ones with an outside wall), it is good enough for me.
wborst
Explorer
Dec 31, 2014
Sorry. I replied to the wrong thread.
RVcrazy
Explorer
Dec 31, 2014
Recommendations for small electric dehumidifier?
holstein13
Explorer
Dec 29, 2014
dsmith3 wrote:
We are "newbs" and wanted to know if there are particular brands/models of hygrometers and/or dehumidifiers that folks would recommend for RV/travel trailer usage.
I really like this one:

http://www.amazon.com/Crosse-Technology-308-1412S-Customizable-Temperature/dp/B00EOW9MKO/ref=sr_1_3

Besides the hygrometer, it's got indoor and outdoor temperature, humidity, forecast, time and date. I like the colorful display and the whole thing is very small.
myredracer
Explorer II
Dec 29, 2014
When the annual rains here in the PNW began to return this past Oct., vertical trim around 4 of our doors (2 interior, 2 exterior) warped like crazy from the humidity increase. I've never seen or heard of this before (on our 3rd TT). The dealer replaced it all under warranty.

Just bought a couple bags of the dessicant stuff from HD as in the photo and will try that. Available as a kit with a plastic drain container. Now that I've seen what humidity can do, we'll be using something every winter from now on. Will probably get a hygrometer to see if the relative humidity level actually does drop much.
Rollnhome
Explorer
Dec 29, 2014
I use the electric fan dehumidifiers in my sailboat. Her are a bunch of chemical dehumidifiers.
Campinghoss
Explorer II
Dec 29, 2014
I have tried various things over the years but a electric dehumidifier, hygrometer and a bucket of damp rid works very well for us during storage. When using the fiver we only use the electric dehumidifier no damp rid.