Ventilation without power - Fiberglass RV


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Old 07-29-2013, 08:38 PM   #1
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Ventilation without power

I am guessing that this is an issue for most, which is the reason that Fantastic Fans are so popular. Even with a fantastic fan the air will travel between the windows in the rear and the ceiling hatch where the fan installs. this leaves the front of the cabin with no circulation.

We have a 13' Love Bug - 2 rear side windows that open and a ceiling vent. No window in the door. When we boondock we don't have power to run a fan (yet).

my question is...does anybody have a vent in the front end of your cabin that can be opened or closed to allow for a cross draft from front to back? If so please share. I am hoping not to reinvent the wheel if someone else has already addressed this issue.
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Old 07-29-2013, 09:01 PM   #2
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Originally Posted by Cat futrell View Post
I am guessing that this is an issue for most, which is the reason that Fantastic Fans are so popular. Even with a fantastic fan the air will travel between the windows in the rear and the ceiling hatch where the fan installs. this leaves the front of the cabin with no circulation.

We have a 13' Love Bug - 2 rear side windows that open and a ceiling vent. No window in the door. When we boondock we don't have power to run a fan (yet).

my question is...does anybody have a vent in the front end of your cabin that can be opened or closed to allow for a cross draft from front to back? If so please share. I am hoping not to reinvent the wheel if someone else has already addressed this issue.

Yup, I have a pretty big vent in the front it's usually called a door. In some areas you might need a screen door to protect you from the bugs. Scamp has one that will probably work.
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Old 07-29-2013, 09:48 PM   #3
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Yup mines the screen door as well.
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Old 07-29-2013, 10:01 PM   #4
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Thanks to you both for the wonderful insight. Lol.. Do you leave your door open when it rains?

My main concern for air circulation is at night. Maybe when we get a new door we will install a screen door and definitely a window in the door.


I expect to be alone most of the time and would like to be able to close the door if I feel the need.

Cathy
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Old 07-29-2013, 10:07 PM   #5
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That is a problem for 13'ers that I'd never thought of. My former Burro had a front window that opened. I guess I would find a trailer inconvenient if it had no openings in front (besides the door). Perhaps it would be worthwhile to make a new vent hole in the forward area? My current trailer has 2 roof vents, one forward and one in the rear bath, and I have hoods over both so they can stay open even in rain.
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Old 07-29-2013, 10:25 PM   #6
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Smile Ventilation

That is one of the reasons we bought a Trillium, opening windows on all four sides.

In my boating days, I bought portholes that could be installed with screens. I don't see why these wouldn't work for eggs. Of course, you can always go to the mfgrs that make windows for RVs like Hehr.

Window Products

Another possibility would be a computer or other box fan propped in front of an existing window. Of course, this would require 120 vac. or not:

▷*Auto Vent Cooler Deluxe Just $12.95 - Your Store Online

Good luck. I know it can get stuffy fast in these little rigs.
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Old 07-29-2013, 10:57 PM   #7
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I don't leave my door open in the rain. I put a couple of maxi vents on the sliding windows so they can be open in the rain. I think as you have a 13' you will not have a really big issue with no openings up front if you have a good roof fan & kitchen windows open. I have to keep my fan set on low even in the 16'. You could also get a cover for the fan to allow it to stay open in the rain.
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Old 07-30-2013, 12:25 AM   #8
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If you sleep in the back you should have at least 2 opening windows. Those and the roof vent provide quite a bit of ventilation at night. We also have a small window over the stove. That window will open in the rain.
No I don't leave the door open in the rain.
Almost all trailers I've been in that have a ceiling fan (Fantastic Fan or MaxxAir) don't get enough air through the without the fan running. As Carol says she has to keep it running most of the time. I don't have a ceiling fan and very rarely have I had ventilation problems.
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Old 07-30-2013, 02:46 AM   #9
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Some computer fans are 12 volt and draw very little power. And small table top fans in 12 volt are also available. Seems like adding a battery and a couple of 12 volt plugs might be a more productive path to ventilation than adding a new vent.
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Old 07-30-2013, 05:26 AM   #10
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My 16' Scamp Side Dinette had a tiny window in the front of the bathroom that was great for this.
It was a crank up and could be left open in the rain and it provided a surprising amount of flow through it for the size.

It was also handy for looking out the front of the trailer at night which I miss now in a Casita.

I have also had trailers with 2 roof vents and the added flow of air without having to have any windows open was very nice too.

My favorite though were both Trillium' that I have had. With Jalousie windows all the way around there was always a great flow of air through them and of course unlike the newer Jalousie they open all the way across the window not just a tiny slice in the center.

It is nice to get the ventilation with no fan but not always practical.
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Old 07-30-2013, 07:18 AM   #11
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Fan powered by "D" batteries. At a recent vintage trailer rally one owner had a nice fan from Walmart that used flashlight batteries. Of course the downside to that is buying batteries. We have a Coleman fan/light/radio that is rechargeable. Battery fans also sold as "tent fan".
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Old 07-30-2013, 07:26 AM   #12
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Fan powered by "D" batteries. At a recent vintage trailer rally one owner had a nice fan from Walmart that used flashlight batteries. Of course the downside to that is buying batteries. We have a Coleman fan/light/radio that is rechargeable. Battery fans also sold as "tent fan".
Actually if the fan from Walmart is the same as I found it also has an input jack for external power!
I have mine rigged to plug right into 12vdc on a lighter plug and it will run forever on a battery jumping pack or the trailers lighter plug.

They are really a nice little fan.
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Old 07-30-2013, 07:32 AM   #13
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The Walmart fan I saw was square, 10 or 12 inches, and had a base that folded. Batteries were in the base I believe. I don't know how long he has had it. Sometimes with Walmart after they sell out an item they don't restock.
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Old 07-30-2013, 07:43 AM   #14
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Put a window in your door that you can leave open at night and in the rain.
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