Max fan open or closed for the winter - Escape Trailer Owners Community

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Old 10-13-2018, 02:16 PM   #1
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Max fan open or closed for the winter

Good day everyone. I live on Vancouver Island. We get a little snow over the winter but a ton of rain. I have been covering my trailer for the past two winters which has kept the green mold and the black streaks to a minimum. I have a question in regards to ventilation.
I have two small heaters which run inside the trailer, under the cover. Last winter I closed all vents that would allow outside air into the trailer but I was thinking that maybe one should leave the Max Fan open slightly to allow this warmed air from the heaters to slowly vent out thus reducing the moisture level inside.
What do you think? Best to leave it completely sealed or leave a vent open. What are your experiences with this issue?
Thanks in advance for your opinions. Cheers.
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Old 10-13-2018, 02:53 PM   #2
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What do you think? Best to leave it completely sealed or leave a vent open. What are your experiences with this issue?
Opening the vent will let in as much moist area as it releases. Think of the trailer as a sealed plastic bag. If you dry out the inside of the bag on a nice sunny day and then seal it up there is little moisture inside. Take the bag into the shower (=wet coast weather) with you. If you open the bag, you will be letting in all the steam from the shower. Fresh winter air is very fresh, but its also very wet. If you leave the bag sealed, it will have the same amount of moisture inside before and after the shower.

Once you seal up your trailer, there will still be some moisture trapped inside. The heater will prevent the residual moisture from condensing. It doesn't have to be very warm for this to happen. If you open the vent, then the heater will have to run more often and you really haven't improved the moisture level inside. Its more like keeping a pot boiling on the stove and continually adding water.

You could also replace the heater with a dehumidifier. This could be electric or else some absorbent crystals like Dry-Z.

My process is:
1. winterize
2. open all the windows/vents on a clear day. I also open all the cabinet doors and fridge and leave them open all winter. I ensure there is ventilation space around the mattress and pile all the cushions on the table.
3. seal it all up after venting
3. put in a Dry-Z container (I put the Dry-Z device into an ice-cream bucket because its corrosive and I don't want any spills)
4. check container every month or so. I usually only get a few cups of water.

The results are: no mold, no smell, no pain.

I try to avoid going into the sealed trailer on wet days.
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Old 10-13-2018, 04:08 PM   #3
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I close it up and use a Davis dehumidifier which is like leaving a 100 watt light on, there is some residual heat and no humidity. I place it on top of something metal as the bottom gets warm...they have a smaller 40 watt model which I place on the bamboo mat in the bathroom..
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Old 10-13-2018, 04:35 PM   #4
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That isn't a dehumidifier. It's just a low wattage heater.

If it was a dehumidifier, there would be a container for the collected water.
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Old 10-13-2018, 05:09 PM   #5
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I don't agree with closing and sealing up anything in a wet and humid climate. For the last 40 years I've been using a light bulb in a tomato juice can to keep the interior of boats and trailers mold free.

For boats with multiple staterooms I put one in each area as the heat from one heater wouldn't be very effective. For the trailer I use the tall one placed under the cracked open vent.

You can debate the sealed up theory till the cows come home but all I know is that I leave bedding and cushions etc. in place and my interior is mold free.

Ron
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Old 10-13-2018, 05:26 PM   #6
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You're very fortunate Ron for several reasons. Obviously you have electricity available to power a heater or your light bulb. I do not. Too, where I live the wind howls November to March. Any window or vent left open, even a bit, just drives moisture inside the trailer, home, shed, etc. It's even worse, if we should get snow or freezing rain.


Since 2002, when I bought my Scamp, I've used a passive dehumidifer, Dri-Z-Air classic in two tubs, everything buttoned up tightly and the cushions stored on the edges inside the trailer. I dump and refresh the crystals about every month to six weeks. Fortunately, I too have never had a hint of mold or mildew inside the trailer(s).
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Old 10-13-2018, 05:33 PM   #7
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Or you can just relocate to Arizona...
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Old 10-13-2018, 06:13 PM   #8
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Or you can just relocate to Arizona...
Gasp, you mean live in that heat factory full time. Are your flowers still out and your grass green? Oh wait, grass is that green stuff that we have in our yards rather than stones and cactus.

Donna, the O.P. did indicate that he had power. In that case I still go with open the vent a crack and keep a little heat on.

Without power, I agree, the Dri-Z-air is the way to go.

Ron
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Old 10-14-2018, 12:30 AM   #9
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I agree with Donna, especially since we store our trailer without power. Big bucket of dri-z-air crystals inside a big bucket trailer closed up tight.
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Old 10-16-2018, 12:28 AM   #10
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Quote:
Originally Posted by Ron in BC View Post
I don't agree with closing and sealing up anything in a wet and humid climate. For the last 40 years I've been using a light bulb in a tomato juice can to keep the interior of boats and trailers mold free.

For boats with multiple staterooms I put one in each area as the heat from one heater wouldn't be very effective. For the trailer I use the tall one placed under the cracked open vent.

You can debate the sealed up theory till the cows come home but all I know is that I leave bedding and cushions etc. in place and my interior is mold free.

Ron
Ron, the whole point of sealing it up is to change the climate inside the trailer. Once its sealed, no one cares what the outside is like. ...and I bet you seal up a lot of things like our tank of marine fuel or your box of flares. There's a science to it, just like that tomato juice can from 1978
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