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 > dehumidifier or space heater for new trailer

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forrestrv

washington

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Posted: 11/19/11 09:32am Link  |  Print  |  Notify Moderator

i just purchased a new trailer im keeping it plugged in to power next to my house. I plan to camp all year, although it maybe once a month or longer in winter that it sits next to house. This morning it is extremly cold maybe down to thirties although most of the time it is in the 40"s to 50"s and rains alot. I live in seattle wa and dont know what to buy to keep in rv a space heater or a dehumidifier or both?

sunkatcher

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Posted: 11/19/11 10:13am Link  |  Print  |  Notify Moderator

Air that is heated will absorb moisture. Air that is cooled precipitates moisture. Ergo air at 40 to 50 degrees will accept more moisture when heated.
My vote would be to place a heater in the rig that will add drying heat when required. A dehumidifier will not take moisture from air that is that cold unless it can take the temperature across its coils to somewhere close to freezing.
Just my O
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vladen

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Posted: 11/19/11 11:17am Link  |  Print  |  Notify Moderator

Given a choice I would opt heater.


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gktsuda1956

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Posted: 11/19/11 11:49am Link  |  Print  |  Notify Moderator

ForrestRV. I like you use my RV year round. I'm down south of you, Longview, WA. When off the job I park in my driveway plugged into 110v in the garage. I make sure when I leave job site 30 amp supply, I turn off the water heater electric breaker and always have the AC breaker off in the winter. These 2 have the ability to overload your 110v house circuit. I put an electric radiant floor heater in the trailer set to keep the trailer at about 65 as I don't want to run the gas heater if possible. When I see weather report showing freezing temps, I turn on the gas water heater and the TT gas heater is always on in the winter. I have an enclosed underbelly, heated by the gas TT heater. I have electric radiant floor heater setting that will help warm the trailer yet still allow the gas heater to turn on intermittently to keep the underbelly tanks from freezing when extremely cold. I put the radiant electric floor heater in the kitchen, farthest away from the gas heater thermostat so that when it does get 32 or below, my thermostat, hopefully will turn on the gas heater to heat the tanks/underbell. Also by putting the electric heater in the kitchen it is also near the gas heater air intake which will than be drawing in the warmer air produced by the electric heater. If power should fail at any time, the gas heater will turn on.

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ArcticDodge

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Posted: 11/19/11 11:53am Link  |  Print  |  Notify Moderator

I use a heater. Get one with a thermostat that you can set the temp on. Don't get the simple ones that are just on/off - hi/lo. Picked up a new one this year from Costco for about $40.


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2oldman

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Posted: 11/19/11 12:01pm Link  |  Print  |  Notify Moderator

gktsuda1956 wrote:

When I see weather report showing freezing temps, I turn on the gas water heater and the TT gas heater is always on in the winter.
You bet. I lived in Seattle many years and, although it's not common, temps in the 20s can and will bust pipes.

I don't know whether OP means keeping the heater in the living quarters or basement.

forrestrv

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Posted: 11/19/11 06:20pm Link  |  Print  |  Notify Moderator

sorry i was unclear a little ive already winterized my pipes im just wandering about keeping some heat to avoid mold mildew in the unit im not fulltiming in the rig just camping once or twice a month

skipnchar

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Posted: 11/19/11 06:41pm Link  |  Print  |  Notify Moderator

I've never seen ANY RV that doesn't produce condensation when it's heated in cold weather. Most find it necessary to leave windows partly open to prevent too much moisture from moisture condensing on glass surfaces and wetting walls and floors around windows. I'd put a dehumidifier inside before using a heater because I think that will have the opposite effect from what you're looking for.


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mlts22

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Posted: 11/20/11 12:30am Link  |  Print  |  Notify Moderator

Both actually. There are alternatives to the traditional dehumidifier:

One choice is to place several big Damp-Rid tubs in 5 gallon buckets (or a clear plastic storage tub), then put one in the kitchen, bedroom, closet, bathroom, and storage. The reason why you put them in a secondary container is a safeguard because the calcium chloride inside is nasty stuff if spilled.

Another choice is to use multiple Eva-Dry Mini Dehumidifers that will absorb water, then will need plugged in so the heater can cook the water out of the beads (obviously not something done in the RV.) I am trying this route and will let people know how good/bad this works.

Of course, Eva-Dry has a couple smaller electric dehumidifiers, but if one goes electric, the best solution might be just sticking a large one in the bathtub and having it drain into the grey water tank, assuming one has a heater running to be safe.

As for heaters, I'd consider two good 1500 watt heaters that have low settings over one heater set to high. This way, if one stops working, the whole RV won't end up freezing. Once my storage site gets a 30A pedestal in, this is something I'm planning to do.

n7bsn

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Posted: 11/19/11 01:14pm Link  |  Print  |  Notify Moderator

We all purty much live in the same area. Keeping the pipes from freezing is important. With your Fox Creek you MUST have the propane heat on to do that. I have a friend that didn't do that, he has had his pipes freeze and split twice now, and he still doesn't, sigh....

That being said, we aren't going to use ours for a few weeks, so yesterday I winterized it. It took all of about 30 minutes and one gallon of pink-stuff. It will take almost no time (come late Dec) to switch it back to "use". Northwood really makes winterizing easy.

For long-term storage I also use a Marine dehumidifer, which is basically a 100 watt heater and a fan. I checked this AM and the rig was 1 degree warmer then outside.

For winter "use" you might want to consider a dehumifier, a real one, with the drain dumping into the grey tank. Last trip out our rig hit 85% (inside)


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