Best location mount auxiliary cooling fan frig

[Betterboat]

Thanks for your quote and the pics I have a 2017 international where did you find 12 V power?

[Guard Dog]

I do not have a wiring diagram for my '19 International 25 FBT refrigerator. How did you wire your fan set up?

[SVTRIDE]

I installed dual low speed computer fans under the roof vent. I wired it in using the stock thermistor and added an override switch that I powered from the 12VDC that powers the fridge. In case the thermistor craps out or I see fridge warming when hot out, I can then flip switch to manually power fans. They are way quieter than the 1 OE high speed fan and move a substantial amount of air.

[lemley]

I just finished installing mine. Put them at the top of the chimney under the cap. As close as I could get to the heat exchanger without pulling the fridge… and when I do that I’ll just add baffles to direct all the flow over the heat exchanger. That should be a simple mod.

All of this is just dealing with the fact that the Airstream chimney design is not within manufacturer spec and is not adequate.

[lemley]

I added the chimney fans. What a difference.

Two days ago the high here was 102. Temp inside the trailer was 80. Temp inside the fridge was 40. Freezer was -3.

Yesterday I turned the AC off on the trailer. High was 106. When I went to turn the AC back on in the evening, temp inside the trailer was 97. Inside the fridge was 49. That’s running very close to Dometic specs.

[Guard Dog]

I bought a titan fan from Amazon ( https://www.amazon.com/dp/B07HHRHHH6...roduct_details ). This weekend it worked great with 111 heat index in Texas. Once the fridge got cold (about 8 hours) it stayed cold (37-38F). We had some shade and I did prop open the outside door a bit, but the fan worked great. I used these splices (https://www.amazon.com/dp/B077YB123S...roduct_details) to tap into the 12V power going into the fridge controls. Very easy. I did not run the fan control switch inside. I just zip tied it in the outside box and use manual controls. The fan comes with some mounting brackets.

[Guard Dog]

It is two wires going into the back of the fridge. See my reply below. I used some very easy connectors from Amazon.

[starkruzr]

Originally Posted by SVTRIDE

I installed dual low speed computer fans under the roof vent. I wired it in using the stock thermistor and added an override switch that I powered from the 12VDC that powers the fridge. In case the thermistor craps out or I see fridge warming when hot out, I can then flip switch to manually power fans. They are way quieter than the 1 OE high speed fan and move a substantial amount of air.

Quick question: in one pic you have attached two red wires to leads that are directly on your radiator. Do those supply power to the fans? I have a similar structure on my radiator but nothing is attached to it or ever has been attached to it as far as I know.

[shannon]

Does no one have the original vent that goes through the floor? Trying to figure this one out in my 1970 Safari. Got the fans I wanted. Just deciding about mounting location on / near my Dometic. And if anyone has an idea for the flue through the floor.