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Old 07-09-2018, 08:44 PM   #1
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2011 27' FB Flying Cloud
Box Elder , South Dakota
Join Date: Nov 2013
Posts: 27
It's another "add a fan" question !

It's hot this summer ! (100 degrees plus here) Our 2011 Flying Cloud 27FB has a Dometic fridge that needs help during extreme temps. I've read through the existing threads, but haven't found a simple but effective solution. I need to find a SIMPLE solution to the problem. If adding a fan is the answer, I'm all for it, but I don't want to have to do major modifications. This trailer only has one exterior access (vented) door at the base of the fridge. I'm capable of doing the wiring and minor surgery, but wish to keep it as easy as possible. What do you suggest ?

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Old 07-09-2018, 09:15 PM   #2
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2013 27' FB International
El Dorado Hills , California
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The flow of air is from the vented door at base of fridge up through the flue out the top. A common idea is to mount a computer fan (12 volt) in a way that accelerates the air flow.

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Old 07-09-2018, 09:19 PM   #3
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2015 28' Flying Cloud
2012 25' Flying Cloud
2007 20' Safari SE
Fuquay Varina , North Carolina
Join Date: Oct 2006
Posts: 417
Add a Fan

We had someone do the work for us. We added a thermostatic fan to the refrigerator. He pulled the refrigerator out and put the fan at the back of the refrigerator space. We have a switch hidden in an overhead cabinet to turn the extra fan on when we need it. It has really helped.
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Old 07-09-2018, 10:48 PM   #4
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Good Ol' , USA
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You can choose any number and types of 12VDC fans. Because I already had them, I used 4 small fans that were already mounted in a couple of metal cages. They just happened to fit nicely near the top of the fridge roof vent.

I used this $5 adjustable thermostat:

Also added an in-line 12VDC switch to the +12VDC source that feeds the thermostat.

A fan (or fans), this thermostat, a switch, and some wiring will have you fixed up nicely.
“What’s good for me may not be good for the weak minded.”

1987 Avion 34W
1995 Ford F250 7.3L PowerStroke
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Old 07-10-2018, 12:28 PM   #5
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1993 25' Excella
Early Bird , Florida
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do it today.......dont wait
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Old 07-10-2018, 03:47 PM   #6
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1998 34' Limited
Lawrenceville , Georgia
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Posts: 152
Go to Wally World or some other store and buy this or a similar small fan, 120 V electric.

Put it in the bottom of the outside Refrigerator compartment aiming upward, across the coils/in the direction of the roof vent. Plug it into the 120 V receptacle that the refrigerator is plugged into back there and turn it on, low if it has multiple speeds. It will make a big difference and is cheap. Remember that it will run until you turn it off. It won't hurt anything, but you certainly don't need it in cooler weather. If you will be moving the trailer, either fasten it to the floor or remove it. You don't want it bouncing around in there as you travel. Damage could occur. It's fast, cheap and effective, maybe not an exquisite solution, but it will work.

Be sure that whichever fan you buy will rotate upward to a nearly vertical wind direction from the base. The one I attached herein might work. It was just an example, but there are others that certainly will. Finally note that this is not a 12 volt, boondocking solution, but if you are on electricity, it's fine as a temporary. Good luck!

BTW, we love traveling in your neck of the woods. Sorry it's so hot there now, but hey, it's July! It's pretty hot here too, but we are heading to the mountains.
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Old 07-10-2018, 04:00 PM   #7
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1994 28' Excella
Hood River , Oregon
Join Date: Jan 2015
Posts: 72
These (link below) are some 12V fans that might work well since they can be aimed. We have some in our Sprinter van. Not sure how they would hold up to continuous use. But could be triggered by a relay tied to a 12V-while running source on the fridge. Or tied to a thermostat.

12V Thermostat:

All the best,
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Old 07-10-2018, 09:38 PM   #8
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2007 27' International CCD FB
San Diego , California
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It doesn't need huge airflow back there to be effective. One single 120mm fan, strategically placed is all that's needed to hugely improve cooling performance. No need for an array or huge loud fans.
Boondocking option package:
'07 27FB Ocean Breeze "See Turtle", 3" lift
'09 Lexus LX570, on 33's
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Old 07-11-2018, 06:43 PM   #9
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2011 27' FB Flying Cloud
Box Elder , South Dakota
Join Date: Nov 2013
Posts: 27
Thanks for the advise ! Actually, we did just that ! It's a $10 fan, it's quiet, has 2 speeds and seems to help. I was going to plug it in where you suggested, but that outlet only has one working side, so I'm temporarily using an extension cord that's plugged directly into the RV park's power tower. The fan's AC power cord converts 120 VAC to 12 VDC, and there's a quick disconnect plug at the fan, so all I need to do is run a 12 VDC line from a nearby 12 VDC power plug and splice the into the fan wire Easy-Peasy !
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Old 07-11-2018, 08:12 PM   #10
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2007 27' International CCD FB
San Diego , California
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Right at the back of the fridge, there's a 12V power source as well. It's the heavy duty wiring that's set screwed into the back of the fridge. You can tap this for computer fans.

Also know for long term, not all computer fans are created equal. Since the area is somewhat exposed to the elements, an IP rated (Ingress Protection, i.e. weather) fan will hold up longer.

Something like this:
Boondocking option package:
'07 27FB Ocean Breeze "See Turtle", 3" lift
'09 Lexus LX570, on 33's
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Old 07-18-2018, 05:18 AM   #11
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2018 25' Flying Cloud
Springfield , Vermont
Join Date: Nov 2017
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My OEM fan was crap... the blades were rubbing on the case and resulted in extremely poor cooling.

I removed that one and replaced it with two fans mounted together with an aluminum L channel from Home Depot.

Very quiet and moves tons of air.

2018 25 RB

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